Malicious PDF — malware analysis report

Static analysis result for SHA-256 4251eb8eb73fc59f…

MALICIOUS

PDF

59.7 KB Created: 2020-11-11 08:43:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-16
MD5: 393901c0fbf0c3e9aaf0f1efa5910c93 SHA-1: caf10367499ab6296dc2c99fd62f345763b96ca9 SHA-256: 4251eb8eb73fc59f12d707bfc20cb2c571851161b990030d0c242b345897d463
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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://traffnew.ru/wb?keyword=farmers%20insurance%20regional%20office%20austin%20tx PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4421354/normal_5f9ed7df096f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408479/normal_5f99d31a33cff.pdfIn PDF document text
    • https://fewabobur.weebly.com/uploads/1/3/4/7/134713859/tanaz-muxabuxeku-batuniwirevus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413369/normal_5fa2203d2d141.pdfIn PDF document text
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/5599216.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374211/normal_5f953a8c72399.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382196/normal_5f978f4e404ba.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8de0553-f855-49d0-a7e7-f7d1c03ee9ea/46429593087.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/773280b7-e8b0-4ab5-b421-2b8dcba6cb4b/hotmail.com_sign_in_email_login.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/72368327431.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8a8d4b3-fda4-41b7-8ea5-d77e0a266ea5/47818318676.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f42aa81b-fbb5-4a4b-abd8-37fe160b0c8e/56945124919.pdfIn PDF document text
    • https://s3.amazonaws.com/wipotegadodorek/1748633296.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ad2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD2B 5224 bytes
SHA-256: f9c855a6eadbb8fd44c0d38d106de79c3b0292d6a14d17626b567e5fb2c795fd
font_01_sfnt_off0000bee3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEE3 10328 bytes
SHA-256: df28f50fb5f446c9717c3f0aa65a85c007801020b32cf1385f757fa5d404076f