Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b8d0795b7f9e495…

MALICIOUS

PDF

37.9 KB Created: 2020-08-15 06:53:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fdbe6279daafe1d49b6df726aa73826a SHA-1: 423fe1a40777f95847ded45a727b5494d0870c49 SHA-256: 5b8d0795b7f9e495ed9c01a406874a6fcec4b3489f0b746fec73891e73162f23
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 primary redirector at 'ttraff.com'. The document body, though obfuscated, contains text related to sheet music and the redirector URL, suggesting a lure. The ML classifier strongly indicates maliciousness, and the presence of multiple PDF link farm heuristics confirms the intent to distribute content via a link farm, likely for phishing or malware delivery.

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.com/wb?keyword=twas%20in%20the%20moon%20of%20wintertime%20sheet%20music%20pdf In PDF document text
    • http://files.breathefreeme.org/uploads/1/3/2/3/132302987/wixejunusoruw.pdfIn PDF document text
    • http://files.pacificcountycovid19.com/uploads/1/3/1/3/131379803/napimavuwolobidexo.pdfIn PDF document text
    • http://files.colliervilledragonsyouthtrack.com/uploads/1/3/0/8/130813923/jidopiw.pdfIn PDF document text
    • http://tizokiru.scoutunit40.com/uploads/1/3/1/0/131070152/pinuxixol.pdfIn PDF document text
    • http://vusekubi.javascriptsandmore.com/uploads/1/3/2/7/132712358/5e6de51.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/1/0429/0566/5703/files/97275202473.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/7848/6933/files/19104178341.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9571/8040/files/lamibudasogavela.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2643/9582/files/97154428164.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5198/3783/files/15177334049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3294/3519/files/lupidikomekapupagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8276/0870/files/fojuja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4782/1205/files/pabureduluxuzagego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6259/9586/files/52005275467.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_off0000561c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x561C 5404 bytes
SHA-256: 8971a33912271031294b9a0eefe1efa9059899671f478a49db84a6f223d84e61
font_01_sfnt_off0000685f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x685F 10052 bytes
SHA-256: c9ba6648b9c933c95848354a806d253231a123014259a839d961411c312bb5c2

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