Malicious PDF — malware analysis report

Static analysis result for SHA-256 258d343784538ff2…

MALICIOUS

PDF

394.5 KB Created: 2022-03-04 06:29:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-12
MD5: a9271f94eb74b19678be540ddefe9515 SHA-1: b3f43eda704dbfb570cd7c70d26f78c3a374d3a0 SHA-256: 258d343784538ff23f1cdcf046f5f9c29ecabe8a7a78003e38677e582e07564d
226 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6197

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Travel-support phone-number stuffing scam critical SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • 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.
  • 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=chinese+visa+application+form+word+file PDF link annotation
    • https://goodnest.info/tctt/sites/aaa/file/36169924586.pdfIn PDF document text
    • https://staffinghub.complifly.com/ckeditor/kcfinder/upload/files/difobiwob.pdfIn PDF document text
    • https://dbmotorbrokers.com/userfiles/file/kafaxabofipufiwavujopo.pdfIn PDF document text
    • https://pecel-piok.hu/images/files/muxukuziju.pdfIn PDF document text
    • https://www.oalysa.cz/ckfinder/userfiles/files/66353724896.pdfIn PDF document text
    • https://mbbs.hr/files/13008826168.pdfIn PDF document text
    • https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/162043833d4a82---95335524119.pdfIn PDF document text
    • http://maxbrio.kr/files/files/83586775837.pdfIn PDF document text
    • http://plantessentialoil.com/upload/files/77413060909.pdfIn PDF document text
    • https://ntc-container.com/upload/files/39055920427.pdfIn PDF document text
    • http://hayfidan.com/admin/kcfinder/upload/files/3262859615.pdfIn PDF document text
    • http://gemeinschaftshaus-grossmuss.de/demo/admin/editor/kcfinder/upload/files/bixewe.pdfIn PDF document text
    • https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/161fb27013a597---valiwiweseloketukuz.pdfIn PDF document text
    • http://eaupureinternational.com/userfiles/file/4731682245.pdfIn PDF document text
    • http://callbells.com.ua/kcfinder/upload/files/wivozamokawufuvunabagi.pdfIn PDF document text
    • http://machulski.com/public/file/59879999542.pdfIn PDF document text
    • http://hosungtour.net/FileData/ckfinder/files/20220302_F5DB85F7A26D84B4.pdfIn PDF document text
    • http://melvin.cz/data/fixos.pdfIn PDF document text
    • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/162049020ab6de---2707164314.pdfIn PDF document text
    • https://maisonforville.be/documents/file/56576756173.pdfIn PDF document text
    • http://www.dinapart.net/frontend/web/kcfinder/upload/files/wevesowafeguriz.pdfIn PDF document text
    • http://architettotoma.it/userfiles/files/paduzigemibevo.pdfIn PDF document text
    • https://computerzone.pk/file/24393289565.pdfIn PDF document text
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/16219a005e5de8---geximudiduratiwejesofa.pdfIn PDF document text
    • http://gaudi.tw/upload/files/widumiwijefovurebenejose.pdfIn PDF document text
    • http://warehousetraining.ie/images/80011121296.pdfIn PDF document text
    • http://yuc-fac.com/uploadfiles/20220201193220.pdfIn PDF document text
    • https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/161fc31e16d5fc---pewetufig.pdfIn PDF document text
    • http://www.anclupnapoli.it/userfiles/file/tezibuparujudapesonuki.pdfIn PDF document text
    • http://www.leads-bd.org/app/webroot/js/ckfinder/userfiles/files/40923386452.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_off0005b8fa.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0005b8fa.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005b8fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B8FA 18536 bytes
SHA-256: b291702f2d06dcd958022be57936594145595f862f42e34b3a30b3b5305414ae
font_01_sfnt_off0005e993.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E993 11068 bytes
SHA-256: 318f04706e5379ae25f332158c8f2a978e58f2ab48e070d9857d6a6a58663be3
font_02_sfnt_off00060342.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60342 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9