Malicious PDF — malware analysis report

Static analysis result for SHA-256 9961625f6b8721e5…

MALICIOUS

PDF

33.1 KB Created: 2020-08-11 07:29:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3c055bed7965e4026c93ea700229e599 SHA-1: 0b2a9153b9afd8f803023f4b294c3d68047711de SHA-256: 9961625f6b8721e503e67f6a980b1e912aa6f910a185713b7292f1289b66bc05
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at https://ttraff.ru/pify?keyword=osbourne+game+theory+pdf. This indicates a likely attempt to redirect the user to malicious content under the guise of providing a PDF document. No scripts were extracted from this sample.

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=osbourne+game+theory+pdf In PDF document text
    • http://files.davidwentworthart.com/uploads/1/3/0/7/130775427/bibadi_sodafitewe_sagifavapitevup.pdfIn PDF document text
    • http://files.pof-addcallsettings.com/uploads/1/3/0/8/130814229/janatuxononunolexek.pdfIn PDF document text
    • http://files.burrisdevanney.com/uploads/1/3/1/1/131164556/4124640.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/1/0427/6345/2583/files/amharic_islamic_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5960/9753/files/defizunidifev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/arch_linux_viewer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7777/9100/files/torusofokigilenenor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7768/7701/files/kugevamenajamudifine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0584/5397/files/63855922363.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53981477141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/niriliruvurufuwupaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/kazenomase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/bijomajaboxirifolani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4335/6821/files/tasixodul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4897/6032/files/97465117844.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_off00004323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4323 5692 bytes
SHA-256: 17bc7af040e86472c2f387e1c11e04f359912e269131ffb9c65b661674a1a611
font_01_sfnt_off0000565d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x565D 9756 bytes
SHA-256: e4b66e9a5466715deb533b125490f783fcfa9b7ab12f3a23dc475ebabb6cf6cd

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