Malicious PDF — malware analysis report

Static analysis result for SHA-256 7953e6c7668384aa…

MALICIOUS

PDF

55.8 KB Created: 2020-07-26 01:10:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 66f81a05b765e0d5cd06b2eedd29f24e SHA-1: 9ba3327e725a4a2acde556b46a65bbe493e86796 SHA-256: 7953e6c7668384aa9a0cb6644589076d183712e4ac3aea0aa2cc56fba522076b
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, including a known malicious redirector at 'https://ttraff.ru/pify?keyword=guidesman+knife+and+multi-+tool+set'. This suggests the document is part of a link farm or phishing campaign designed to redirect users to malicious sites. The ML classifier also strongly indicated maliciousness.

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.ru/pify?keyword=guidesman+knife+and+multi-+tool+set In PDF document text
    • http://files.thehumblecouplesco.com/uploads/1/3/1/6/131606330/0fc6da.pdfIn PDF document text
    • http://files.cathrynweissportfolio.com/uploads/1/3/1/4/131407183/8511dfe48415e56.pdfIn PDF document text
    • http://files.charlayvangoshen.com/uploads/1/3/1/3/131380689/memanig-tudujumemuxutoj-dakilo-nagidijena.pdfIn PDF document text
    • http://files.nancylarondajohnson.com/uploads/1/3/0/7/130738636/bofexidew.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/1/0428/9835/8432/files/gigogew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2301/5841/files/fifivivijamexofakav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0094/5048/files/75753257169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/70278744099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8545/3730/files/55924595148.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51098187394.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7294/5312/files/gojesarudadibigepebareke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/lufukugixut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0813/1233/files/13718686494.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9508/1635/files/xifesefevul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4388/9058/files/89663197336.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
🗂 Part of campaign: cathrynweissportfolio.com 3 samples

Related samples 3

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_off00009ce2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CE2 4964 bytes
SHA-256: f28131e50c3f7108bb94fe873dde1d95859e66b07ad6847637e3831a0a950d60
font_01_sfnt_off0000adbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADBF 10592 bytes
SHA-256: 3ee042341723a250191fc251ff3e100a46504f5ac4bed83498899dea0bdefb48

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