Malicious PDF — malware analysis report

Static analysis result for SHA-256 26feda783366b71a…

MALICIOUS

PDF

252.2 KB Created: 2022-03-01 13:19:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-18
MD5: c13f6130fc6ed532352bb47ff2a4f6cb SHA-1: e5a9cb10eff49059f5ad240b9eacb28a3f36c0ed SHA-256: 26feda783366b71a5f3b82b92e4a57cc333a20323f7341245e5a5a06f3e6eb74
246 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6033

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://keifo.ru/ckfinder/userfiles/files/vasepatedu.pdf In PDF document text
    • https://chrmglobal.com/userfiles/file/xafividirefikoriti.pdfIn PDF document text
    • http://chronoflex-dz.com/app/webroot/assets/js/kcfinder/upload/files/88770314679.pdfIn PDF document text
    • http://rollaktif.com/images_upload/files/6684218784.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1620828d448ece---87118194058.pdfIn PDF document text
    • http://smartstone.ca/userfiles/files/jiram.pdfIn PDF document text
    • http://amkchem.com/upload/files/ditodobegowonuriripumam.pdfIn PDF document text
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/16219d41b5dac9---66351128943.pdfIn PDF document text
    • http://npxbyy.com/wang3_3_10_27/Upload/Upload/file/2022226846335155.pdfIn PDF document text
    • http://tetobox-budapest.hu/uploads/files/dobexozeliwojon.pdfIn PDF document text
    • https://aharonoff.easystockhosting.com/sites/default/files/fckimages/file/74747898651.pdfIn PDF document text
    • http://retailcop.ca/files/46235360845.pdfIn PDF document text
    • https://marcuspietrek.de/MARCUS/files/file/16191858753.pdfIn PDF document text
    • https://seitonsolutions.com/ci/files/2280948518.pdfIn PDF document text
    • https://absolutefusionworkout.com/userfiles/files/74990954162.pdfIn PDF document text
    • http://anhuizpyy.com/upload_fck/file/2022-2-26/20220226212841863675.pdfIn PDF document text
    • https://officialbacknumber.org/editor_up/wuzotivix.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/51622893877.pdfIn PDF document text
    • http://moderncarrent.com/user_img/files/79766310921.pdfIn PDF document text
    • http://ahknchem.com/upload/files/gujegejeditigi.pdfIn PDF document text
    • https://superiorservicesandsolutionsfl.com/nbloom/fckuploads/file/51741449145.pdfIn PDF document text
    • https://sealskinz.ru/files/file/nosofixegebesufexesox.pdfIn PDF document text
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/16209652930417---14692746159.pdfIn PDF document text
    • http://affichage-comevents.fr/kcfinder/upload/files/2007091303.pdfIn PDF document text
    • https://pataniforum.com/admin/jquery/ckfinder/userfiles/files/85734041548.pdfIn PDF document text
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fb16038c5e7---bixifofovekofo.pdfIn PDF document text
    • http://moneymaker-gold.de/files/dozeporekofuzugu.pdfIn PDF document text
    • http://bilasiparacollege.org/assets/kcfinder/upload/files/womibe.pdfIn PDF document text
    • http://cy2hand.com/userfiles/61966616653.pdfIn PDF document text
    • https://madeirashopping.com/userfiles/file/44355236259.pdfIn PDF document text
    • http://muszosz.hu/_user/file/41250959421.pdfIn PDF document text
    • http://webcertain.asia/contentupload/fckeditorUploads/organization_/file/28989573410.pdfIn PDF document text
    • http://gattoneva.pl/pages/userfiles/file/44782741970.pdfIn PDF document text
    • https://www.camaragranada.org/administracion/kcfinder/upload/files/51507352691.pdfIn PDF document text
    • http://jcmb.gris-de-payne.fr/app/webroot/kcfinder/files/karunopabepivekiwulikivut.pdfIn PDF document text
    • https://www.trafiktehaklarim.org/kcfinder/upload/files/61510856160.pdfIn PDF document text
    • http://accuway.yun2u.com/upload/files/24017374869.pdfIn PDF document text
    • http://okna-kurska.ru/page_edit/_samples/userfiles/files/kaxawebatububerubifogu.pdfIn PDF document text
    • https://arerp.kr/data/file///repuv.pdfIn PDF document text
    • http://foto-preiss.at/upload_files/files/refazijeruxo.pdfIn PDF document text
    • https://thegioibaobicarton.com/Images_upload/files/59996786870.pdfIn PDF document text
    • http://svarovani-tig.cz/userfiles/file/luxojobapiferofilu.pdfIn PDF document text
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/2ec29ab6a892m5umtmsv35u97o/sidumebuwut.pdfIn PDF document text
    • https://yubit.co.za/XSRYdR1H?utm_term=microsoft+office+2016+professional+plusPDF link annotation
    • http://cuuthuong115.com/ckeditor/kcfinder/upload/files/visobokanid.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    +3 more URL(s)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000376a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x376A4 11028 bytes
SHA-256: c3d9e4042691e86f2bd7aee0154d0dc06be7ea23981c5aae37e694c028b13963
font_01_sfnt_off0003908c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3908C 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0003a7a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A7A7 21668 bytes
SHA-256: d4203f9fa80bf49553022514134b11ecf5fc03eb8961914a79af871b60990b08