Malicious PDF — malware analysis report

Static analysis result for SHA-256 0862a791403dfd14…

MALICIOUS

PDF

71.3 KB Created: 2021-01-08 00:34:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: c85867101668deb211d989732948f911 SHA-1: 06bfd7d0d2f1c8191bf835374d204cb9ad47a5fb SHA-256: 0862a791403dfd14611bf12eecc96c968df15401298e15e52e6cb5144e31b27b
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, many pointing to SEO redirectors, a common tactic for phishing or malware distribution. The heuristic PDF_SEO_LINK_FARM and PDF_SEO_UTM_REDIRECTOR_LINK indicate a link farm designed to funnel users to potentially malicious sites. The ClamAV detection and ML classifier further support its malicious nature. No scripts were extracted, but the presence of external links suggests an attempt to redirect the user to a malicious payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffi.ru/123?utm_term=erik+the+slayer+skyrim+marriage PDF link annotation
    • https://furasawi.weebly.com/uploads/1/3/4/3/134308809/puvoxiravipegut.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379848/normal_5f8e0a1b38f77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489061/normal_5fdaf04a68268.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365547/normal_5f88439eee36b.pdfIn PDF document text
    • https://bugibupezo.weebly.com/uploads/1/3/4/7/134711935/memexej_sejusixo_megogidejavude_defaxogosu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490519/normal_5faf0f8d38138.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/0845709b-fcb5-4f6d-b0a9-36ca9d2e6c9d/vubewigaredotezagawotid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed5502e3-eb08-4cb1-8e53-15b6d510d60f/83856177458.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1540576e-b51e-4a7b-9cee-7deec9e1424b/scorch_trials_book_pages.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84cd4515-24b4-4bce-a58b-d85f5451b459/cleric_guide_dark_souls_3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9f975bc-c5df-4dbd-8ed5-1e84ed92a10f/70999873971.pdfIn PDF document text
    • https://s3.amazonaws.com/dagasopones/green_chemistry_letters_and_reviews_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/242d98c4-4232-4e56-b2be-8212454c402c/tijoxemuwojegotidajuzeku.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_off0000d8cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8CC 5220 bytes
SHA-256: 547c74dc5f131f1c80cee77569d7805f745f6c70778e4d56e0548c900bde1c03
font_01_sfnt_off0000ea74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA74 11052 bytes
SHA-256: 5c49b761680dc2ccbaba63b4f2f6b3388d898b4bc9299f3ca60dfaaecae273e7

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