Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf6cea70d230d061…

MALICIOUS

PDF

47.5 KB Created: 2020-09-21 00:47:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 06885d468d838792aaea1db9d6687be3 SHA-1: 4e03f054414c2c0892b46d86e5b71abd3fc3bf0d SHA-256: cf6cea70d230d06121bc4e3e922c77494a38b59e57a3bd2bd3677f3606f0fbd8
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass of external links, many of which point to link farms. One critical heuristic identified a direct link to a known malicious redirector infrastructure. The document body, though obfuscated, contains the URL https://ttraff.club/wix?keyword=blockheads+taming+guide, suggesting a lure to a malicious site. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.club/wix?keyword=blockheads+taming+guide In PDF document text
    • http://fafemu.thelincolnloft.com/uploads/1/3/1/3/131380397/denewexewub-geramemuz-somisepetegaraj-fupafesaz.pdfIn PDF document text
    • http://feral.stpeterchurch.com/uploads/1/3/0/7/130775493/6383849.pdfIn PDF document text
    • http://files.homeworshipping.com/uploads/1/3/2/7/132740692/bewujajekenotujuzes.pdfIn PDF document text
    • http://files.sitemuse.org/uploads/1/3/0/7/130775897/velapavubimuxim.pdfIn PDF document text
    • http://gasobuwaj.waferlab.org/uploads/1/3/1/3/131379373/71cd11096691f.pdfIn PDF document text
    • http://rubadador.carmelbayhoa.com/uploads/1/3/0/7/130740199/zajazefizon.pdfIn PDF document text
    • http://files.pushthenote.com/uploads/1/3/2/6/132696214/waweg.pdfIn PDF document text
    • http://files.ratcotu.org/uploads/1/3/2/6/132695719/87807f87f3eb.pdfIn PDF document text
    • http://lemakilo.mathiashse.com/uploads/1/3/1/6/131637873/xanuwatipibowekipifa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://bc3413d8-33e1-4250-8819-016eec4fcb31.filesusr.com/ugd/e1a791_44caa332713d4c18ac84d832aaf3a6b9.pdf?index=trueIn PDF document text
    • https://628e5d44-fc54-41e9-a5e0-820a9784f05a.filesusr.com/ugd/bb4607_3e73c863dc16412e9e83a2a9c044e8d7.pdf?index=trueIn PDF document text
    • https://bbfcf060-a4cb-4e84-880d-9ff477d0962c.filesusr.com/ugd/defd8a_54af6439879b4162b99b1dfdbf428ce5.pdf?index=trueIn PDF document text
    • https://21797b36-d8cb-4eea-a4ca-9c95ad10f78d.filesusr.com/ugd/8ac1ab_eb19e25e6a544e098835d06ca456a681.pdf?index=trueIn PDF document text
    • https://8f4cb5f3-f8d0-450e-a4ed-94403a7e34c6.filesusr.com/ugd/c4dbd3_54fc3268723a4d18ab6be57a5aa11a88.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F3D 5252 bytes
SHA-256: ac8debbd96c4bdb8ae7bd782d4b1e8b464ad0c6e0d667b268bdd78e7f03a4203
font_01_sfnt_off000080f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80F0 10100 bytes
SHA-256: 5164e7d69d2d464c196a011147e94b9e6169d15adbf6aa1a49a37d92953014c5
font_02_sfnt_off0000a37a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA37A 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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