Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbec9cbc524359c8…

MALICIOUS

PDF

501.7 KB Created: 2022-03-23 15:53:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-24
MD5: ebbb2f868152b268483e8ad868c1118b SHA-1: 615a989ee92aeed252241a6f5f6b9b39e836735f SHA-256: cbec9cbc524359c8dceda38460206e2aae5dd215e3732085f9be96f872a6fffb
216 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4656

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 https://mifuj.co.za/XSRYdR1H?utm_term=super+bomberman+3+rom PDF link annotation
    • https://rheinfurth.de/userfiles/file/jumubewimoz.pdfIn PDF document text
    • https://realestatesplatform.com/userfiles/file/89203514019.pdfIn PDF document text
    • http://malir-naterac.info/UserFiles/File/33726229601.pdfIn PDF document text
    • https://mikepromedia.com/wp-content/plugins/super-forms/uploads/php/files/2a12153448950f4bd0d63323f99d8796/55681541749.pdfIn PDF document text
    • https://www.invidea.it/kcfinder/upload/files/gugulavudifaxevozunewojib.pdfIn PDF document text
    • http://www.alm-machines.be/kcfinder/upload/files/13853972583.pdfIn PDF document text
    • http://lucidareemantenerepavimentifaidate.it/userfiles/files/sinub.pdfIn PDF document text
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1621de45c77a42---takoxevatujomavutoxu.pdfIn PDF document text
    • http://akinmobilyavedekorasyon.com/app/webroot/kcfinder/upload/files/54705913296.pdfIn PDF document text
    • https://alev.az/userfiles/file/9154550391.pdfIn PDF document text
    • https://rioclaro.com.co/kcfinder/upload/files/lifuxivorisijefifevulodaw.pdfIn PDF document text
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fd0a0c5a244---21619425484.pdfIn PDF document text
    • https://www.monacruises.com/html/scripts/ckeditor/kcfinder/upload/files/kafepuzatuvuwozusadajok.pdfIn PDF document text
    • https://tdh-europe.org/files/files/nojemopun.pdfIn PDF document text
    • https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/3e03a6e9bcf31a21563527f5a1b3f49f/88181702462.pdfIn PDF document text
    • http://sbriz.ru/userfiles/file/24337174779.pdfIn PDF document text
    • https://cardion.dk/gfx/fckimages/file/rijudotimalexo.pdfIn PDF document text
    • https://unityofmyanmar.org/images/files/kipiwigexuk.pdfIn PDF document text
    • http://stinpo.com/ckfinder/userfiles/files/beminudowiguwiwajes.pdfIn PDF document text
    • http://tourhong.com/FileData/ckfinder/files/20220221_64FC9701FC3DFC25.pdfIn PDF document text
    • http://yamada-kajuen.com/js/kcfinder/upload/files/79795545317.pdfIn PDF document text
    • https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/1622558a06e10a---3424329068.pdfIn PDF document text
    • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/05e4dedcd878b3190c8d086cee91ce3a/39030591543.pdfIn PDF document text
    • http://carnavaldemarbella.com/Senegal_5/Content/files/userfiles/file/gipilafiso.pdfIn PDF document text
    • http://food-cloud.com/home/food-cloud/www/site/site/data/files/83418096308.pdfIn PDF document text
    • http://deborahkay.com/ckfinder/userfiles/files/wupeforulamufarilorerejo.pdfIn PDF document text
    • http://rotarytattoomachine.co/project-new/christianbook/upload_images/file/73763777833.pdfIn PDF document text
    • https://www.alapan.org/fckimages/file/40930900585.pdfIn PDF document text
    • https://chauphongasia.com/wp-content/plugins/super-forms/uploads/php/files/k80ukvv9ij5atlseoo3djtrooi/depafizofebifotiviwisiga.pdfIn PDF document text
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/1621ac18884944---49008909301.pdfIn PDF document text
    • https://merten-rozetki.su/kcfinder/upload/files/26810263280.pdfIn PDF document text
    • http://powerfalcon.net/uppic/files/66717214462.pdfIn PDF document text
    • http://nenayu.com/filespath/files/20220205041025.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
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off000768eb.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000768eb.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000768eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x768EB 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00078006.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78006 18096 bytes
SHA-256: a669d3625b0478c15ba0ab2ccf426bf21b5f6c81ee8fb36245fe6b3f6c871613
font_02_sfnt_off0007af8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF8B 10496 bytes
SHA-256: 505fc5c7e207903d38c83abbac867a6aff60854083f5582fd23c65cf2ae28ab2