Malicious PDF — malware analysis report

Static analysis result for SHA-256 4769ade529f0a7bf…

MALICIOUS

PDF

39.8 KB Created: 2020-08-10 06:50:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 03b5b6bc1967e816176af648a5312143 SHA-1: f8c3cc42797109f7bb339348715b552bf2535cf6 SHA-256: 4769ade529f0a7bf9fb59396c3595b8be91495e57032f3dfa9223c713e3cc1a3
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical redirector link to 'ttraff.cc'. The document body, though heavily obfuscated, contains the string 'technical drawing pdf textbook' and the malicious URL, suggesting a lure to disguise the malicious intent. The ML classifier also strongly flagged this PDF as malicious.

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/pify?keyword=technical+drawing+pdf+textbook In PDF document text
    • http://files.ginnyshockley.com/uploads/1/3/1/8/131856247/muvibulado_xasigimibovuv.pdfIn PDF document text
    • http://files.nickidenicki.com/uploads/1/3/1/4/131454521/kebol-wakojoje.pdfIn PDF document text
    • http://files.oligumm.com/uploads/1/3/1/6/131606206/264ed82a5d0.pdfIn PDF document text
    • http://files.lostinthecrowdbook.co.uk/uploads/1/3/1/6/131637402/fiselisuzaro_susivimif_pamijozu.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/1/0432/4098/0643/files/39278387047.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71895612735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4035/9068/files/vodoxipam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4716/3806/files/bass_guitar_notation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3203/4980/files/gabubulomofera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1217/7572/files/32204292449.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4976/2459/files/supup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5053/2001/files/siseta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6191/9390/files/xokufoxafimuwivipokor.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 4

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_off00004ded.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DED 5340 bytes
SHA-256: 870995714878474b0157363771ff5487b68917d5da6e2b8cdfe48186c7f12045
font_01_sfnt_off00006012.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6012 10796 bytes
SHA-256: a74ced808aebb5b44cf78ede38ed5c66701e860b1ce75dae7bd64709e6137e23
font_02_sfnt_off0000849d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x849D 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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