Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c08fa1e19c90153…

MALICIOUS

PDF

44.6 KB Created: 2020-08-08 11:43:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b0bec5fdbcda5171e694eec0aa236dff SHA-1: 93fb442f60728aa89c5e436edb771b770664414f SHA-256: 9c08fa1e19c9015371a5d10430d2e0d29b3073812b08887270fb84f92bd6ec93
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern involves luring users through deceptive content or SEO poisoning to click on malicious links, which likely leads to further compromise.

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=automobile+mechanics+book+pdf+download In PDF document text
    • http://files.backdoorfriendspurebredcatrescue.org/uploads/1/3/2/6/132695546/dujaf_lunekuwojoxewov_suwasaxuwewab.pdfIn PDF document text
    • http://files.islamtoyhwh.com/uploads/1/3/2/6/132683330/detagakom.pdfIn PDF document text
    • http://files.rebalancesudbury.com/uploads/1/3/2/6/132681392/potokozobajinopabov.pdfIn PDF document text
    • http://files.renehindsarts.com/uploads/1/3/1/4/131437775/zaboduzevavivafo.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/1/0431/5525/9546/files/94220731940.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3292/6616/files/public_speaking_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vitalifurefafimeribedewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1829/6216/files/8973469042.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8937/9993/files/vusekenuliladakepuvif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2532/5467/files/bidip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8575/8617/files/40635932114.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3741/6869/files/emergency_care_13th_edition_download_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0904/7717/files/tedukegagovaluziv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6055/9013/files/xekafaluwafuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1320/9246/files/zepinemoneselopuzeno.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 8

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_off00005c0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C0B 5584 bytes
SHA-256: b429fdd6bc8994e6119fd87658706a51b77e0670832f59621257de44b7928f90
font_01_sfnt_off00006ee5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE5 2116 bytes
SHA-256: 33d80b5e357abfa3ea91f5eff18928953f8e36d8e9a7aea158c838e8ae756dd9
font_02_sfnt_off000078af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78AF 14384 bytes
SHA-256: 381c9bbbdfcc1b6ad58236cd21b1ea292f5eaf62c810a65b6b535c960b6a1043

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