Malicious PDF — malware analysis report

Static analysis result for SHA-256 02f40bfd181d6757…

MALICIOUS

PDF

62.7 KB Created: 2020-08-06 17:25:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bc736e1d7f535baa2a664cb60cb22cb8 SHA-1: 32801148a034220d4fa47e13090a3b6af1e6671b SHA-256: 02f40bfd181d6757b9029b0f4811e674483d59732480f507f869415209aeb0bb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service at 'ttraff.ru', which is flagged as malicious. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to trick users into clicking it for a fake download. The presence of many SEO-optimized PDF links indicates a link farm strategy to distribute malicious content.

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=geometric+probability+distribution+pdf In PDF document text
    • http://files.beerliquordelivery.ca/uploads/1/3/2/7/132712558/9564913.pdfIn PDF document text
    • http://files.bmwenthusiast.ca/uploads/1/3/1/6/131606733/bikagogetojex.pdfIn PDF document text
    • http://files.twainquiry.co.uk/uploads/1/3/0/8/130814118/7092949.pdfIn PDF document text
    • http://files.southernsass.shop/uploads/1/3/2/8/132814593/rurofosufuxetut-fojigalusota-xufujamezore.pdfIn PDF document text
    • http://files.ranvill.com/uploads/1/3/1/0/131069899/vupiridotiseg.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/1/0432/6067/4198/files/pepiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5697/9351/files/tuesdays_with_morrie_sparknotes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6410/6908/files/88960699936.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3266/4481/files/66537760062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1638/7733/files/kafomoguvovojoparepuwuwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2891/4074/files/bidipekopofizexozuxuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9386/9223/files/fulotikevupedubi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8072/0294/files/55555321267.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9617/8845/files/rule_34_star_trek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9752/2329/files/fodofubimazowofa.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off00009378.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9378 5572 bytes
SHA-256: dfb86ad6d2a1c49458fb2b2f34cf7f652d333b3552a4835639de81779dda0567
font_01_sfnt_off0000a658.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA658 15244 bytes
SHA-256: 785c0bcd753a8bd9b073064e220d454686c260384b435ad52e5aeaec68d6b474
font_02_sfnt_off0000d6c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6C7 16580 bytes
SHA-256: 9cf2a0953b2527320edcb60f7d9d58d30bdedd272f4d309197636b1fecf35109

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