Malicious PDF — malware analysis report

Static analysis result for SHA-256 42544fe2052fc80b…

MALICIOUS

PDF

70.0 KB Created: 2020-11-11 16:51:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-15
MD5: b856fdad5e8a09c66db95d43f9ee973d SHA-1: bd0a6a3ba2b58be63e6fe3144ca4b55922b2f3d6 SHA-256: 42544fe2052fc80bf9cf42cd5003087f29639f560e0b359d92ee27c879bfdbd7
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://trafficel.ru/strik?utm_term=file+delaware+annual+report PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4380383/normal_5f9c1e9ac30a3.pdfIn PDF document text
    • https://xefafarorul.weebly.com/uploads/1/3/4/6/134698093/5259054.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366973/normal_5f90dba1a2e64.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378165/normal_5f8c9c53165e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376610/normal_5f9edb664ace2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425506/normal_5f9dbfa524fc3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402956/normal_5f930f32ceebe.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/e1d87f00-91d3-4f5c-93a9-1b7e60dfddb5/70841350070.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/n40s61-403_water_heater.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f35d5a2-2607-4a71-b87f-5e7eb22d871a/36257935923.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/96207910014.pdfIn PDF document text
    • https://s3.amazonaws.com/nakevoja/business_certificate_services_tallahassee_fl.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/lorepozi.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/32925739363.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85c65ae4-a6e3-424b-827b-fb5676e965d9/46013841703.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_off0000d486.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD486 4824 bytes
SHA-256: 36a6ebaeff0facab02677b34de2713fcb705834d03c61c2f3827981fdac29ac9
font_01_sfnt_off0000e50e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE50E 11144 bytes
SHA-256: bd038e10264984f719f2e6b6545ffde461dd29191cae0b10b3088fb27a0ff854

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