Malicious PDF — malware analysis report

Static analysis result for SHA-256 74dfc6383f0a3cd4…

MALICIOUS

PDF

35.5 KB Created: 2020-08-12 02:32:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 213371c2388a687982c921631a508049 SHA-1: 35d41ec7bc84e352aa3a864ce1521ee5e98a3789 SHA-256: 74dfc6383f0a3cd4104a04e91b501a7c0b0d632f43ba1d8e78b51c6acd9257df
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one prominent link redirecting to a known malicious domain ('ttraff.cc'). This domain is used as a redirector, likely to obscure the final malicious destination. The document body, though partially obfuscated, contains the same lure text as the redirector URL, suggesting a phishing attempt disguised as a document download.

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.
  • 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.
  • 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.cc/wb?keyword=outline%20of%20veterinary%20clinical%20pathology%20pdf In PDF document text
    • http://dolivarus.lisareimann.com/uploads/1/3/0/7/130775735/8561474.pdfIn PDF document text
    • http://filekek.thefulfillmenthouse.com/uploads/1/3/2/6/132682076/442825.pdfIn PDF document text
    • http://files.papasrefrigeration.com/uploads/1/3/0/7/130775310/6740717.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://cdn.shopify.com/s/files/1/0438/4266/6656/files/77561378828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7138/0383/files/convert_to_midi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2052/5476/files/58221831069.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tokon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4727/3116/files/10693869544.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8331/6891/files/3360675616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3626/8949/files/bayonetta_2_cheats.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5249/1159/files/fobipemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6557/3537/files/neet_chemistry_syllabus_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9275/5103/files/tuvibarudagax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0175/6323/files/jiluda.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

Related samples 2

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_off000040bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x40BB 5312 bytes
SHA-256: 2982b0996760925c6ff43c860ef7ead3e123a79c28b5abafae86820e04d7bef3
font_01_sfnt_off000052d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52D4 9376 bytes
SHA-256: d97345718d3fa5196e515eb6b98e3b02b6d743b08c2a3b6b865d007fdc81826c
font_02_sfnt_off000072e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72E5 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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