Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fe85f08b13385bc…

MALICIOUS

PDF

32.1 KB Created: 2020-09-17 13:36:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 68047b396092e37d3226c38878bc3c67 SHA-1: 4048b8c265350916d2d98040ec7d85159c33e7ed SHA-256: 4fe85f08b13385bc2328911203d5f6a01fd18d7e2ca3bbde3d18e85621382a68
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a mass of external links, a common tactic for SEO poisoning or redirecting users to malicious sites. The primary heuristic firing indicates a link to a known malicious redirector at 'https://ttraff.me/wix?keyword=rank+size+rule+ap+human+geography+formula'. The document body also contains this URL and numerous other PDF links, reinforcing the malicious intent. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.
  • 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://ttraff.me/wix?keyword=rank+size+rule+ap+human+geography+formula In PDF document text
    • http://files.neurosurgerytraining.org/uploads/1/3/1/4/131438459/513b6.pdfIn PDF document text
    • http://ligod.inmanstudioarts.com/uploads/1/3/1/1/131164077/de6f1a50d597d3.pdfIn PDF document text
    • http://nikeji.reginalopez.net/uploads/1/3/1/8/131871721/2245721.pdfIn PDF document text
    • http://gojimema.dennisblundell.com/uploads/1/3/0/7/130775365/jivudapera.pdfIn PDF document text
    • http://xodudoju.okaaugym.com/uploads/1/3/1/8/131871622/wuzubipesisej.pdfIn PDF document text
    • http://detifata.dugeogsoc.com/uploads/1/3/1/3/131398368/xebeduxoripa.pdfIn PDF document text
    • http://wopube.dslvnjny.com/uploads/1/3/2/6/132696056/18b0ff5.pdfIn PDF document text
    • http://vifapi.bsascouts800.com/uploads/1/3/0/8/130814851/25a901af24.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://1d52706e-08cb-4794-a06b-0e17a9b389e0.filesusr.com/ugd/5ad03d_3854259a468d41789d22a906410d8823.pdf?index=trueIn PDF document text
    • https://57a35d38-ee79-4337-bf67-8e48a00e1a41.filesusr.com/ugd/24deb6_20fb2ba7b8f146d0be0bdd59c9a7fddd.pdf?index=trueIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000409e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x409E 5540 bytes
SHA-256: e37f1cbaa65e7b26c1dd280407cfb211bf4de5856d86018368fd20918eeb9948
font_01_sfnt_off00005367.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5367 9444 bytes
SHA-256: dcd032038ef1971eace606d3a2340ec8fe993ecd000d6cf7ced655c1f94cd523

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