Malicious PDF — malware analysis report

Static analysis result for SHA-256 141cdda5231a2d4b…

MALICIOUS

PDF

33.7 KB Created: 2020-08-01 14:32:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4466416743cac438bb062f357a6298fb SHA-1: a82fb102b210a233a426fcaedff2ee9c5b00f79b SHA-256: 141cdda5231a2d4ba30609cea95e0afdcd3fd397006ca286cffe4a93196fef91
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links, many of which point to an SEO redirector infrastructure. The primary redirector URL, https://ttraff.ru/pify?keyword=billy+joel+keyboard+book+pdf, is flagged as malicious and associated with a link farm designed to lure users with seemingly legitimate content. The document body, though heavily obfuscated, contains references to this redirector and other PDF files hosted on Shopify, suggesting a phishing or scam attempt.

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=billy+joel+keyboard+book+pdf In PDF document text
    • http://files.compasswellnesscoaching.com/uploads/1/3/0/8/130874543/1997618.pdfIn PDF document text
    • http://files.jamfinearts.com/uploads/1/3/0/7/130738752/viwul.pdfIn PDF document text
    • http://files.deesinhadesign.com/uploads/1/3/0/9/130969357/7927045.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/1/0433/0687/7080/files/wesuwalaloluxafim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7408/5279/files/73334278238.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6895/6573/files/nevawuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0817/8850/files/moxuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1242/1789/files/32338160787.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6884/2393/files/78709910949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1350/4156/files/91378189560.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9969/0910/files/zodobabofakupid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/56981889128.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/41869091218.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/96675787745.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3711/1958/files/72375950066.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zilifevuzumojewod.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 5

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_off000046ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46AB 5288 bytes
SHA-256: 72e847622513e5f9f66d2ec01ff973e4fe89e653ac0109e26daee310cb36eb0f
font_01_sfnt_off000058c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58C3 9876 bytes
SHA-256: 17734101447c5c5b39c9a6571ed66a7c55e1dd3b708bd7bb385e0c6681959022

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