Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fe4601ecd11e826…

MALICIOUS

PDF

42.1 KB Created: 2020-08-14 23:44:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d71d3f40fdeda5b42d020c6514019881 SHA-1: 9b931b1087fc38a63ffed2f6aa9c39fd2a792b7d SHA-256: 9fe4601ecd11e826221aec0f426c5f1486267647b56b504173f729e69ba6428d
154 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with one identified as a malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags the URL https://ttraff.cc/wb?keyword=psat/nmsqt%20testing%20manual as pointing to known malicious infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a large number of external links, suggesting an attempt to manipulate search engine results or distribute content widely. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=psat/nmsqt%20testing%20manual In PDF document text
    • http://tiwanul.williamjensenwrites.com/uploads/1/3/1/3/131380429/tidup_dugaboruwinikew_wokotowifaz.pdfIn PDF document text
    • http://files.northwoodshaman.com/uploads/1/3/1/8/131857115/3ae3c70.pdfIn PDF document text
    • http://vevele.noondayfarm.org/uploads/1/3/1/4/131453247/6f91c406680.pdfIn PDF document text
    • http://files.markdfoxamerrawart.com/uploads/1/3/0/7/130739542/d675c3a2f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1848/5923/files/72317654460.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5545/6149/files/quantum_chemistry_and_spectroscopy_engel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5969/2198/files/regex_cheat_sheet_javascript.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pufabupenidobuxix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1180/9190/files/binagazutupataketugegam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5149/9170/files/ribepagubi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2308/1373/files/bemadurusajasow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9356/5342/files/saginaw_bay_weather.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/68905528383.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5540/7511/files/54339718973.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/20532153239.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 6

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_off0000679a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x679A 5072 bytes
SHA-256: fdc1178de3b1f59bda6e6f044523b434e3a196376c1194b0e257a9220ef44cbf
font_01_sfnt_off000078ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78CE 10272 bytes
SHA-256: 96e0a66e9139e7abb6951a4145bcdbf167d7f820c80501932b80cf9376994924

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