Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b2f38df7ad9864f…

MALICIOUS

PDF

65.8 KB Created: 2020-08-22 10:56:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d311a5191dfa46e88be7bc69937d3793 SHA-1: 7adaa9c1bbe7f6c629e122c1c4f4ecf44ecb302e SHA-256: 9b2f38df7ad9864f6d5ec6f5193f6edecd40304c681c79bf7cddea837e590706
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm with 24 external links, including a redirector to 'ttraff.cc'. The ML classifier strongly indicates maliciousness. The primary malicious URL is 'https://ttraff.cc/pify?keyword=chest+anticoagulation+reversal+guidelines', which likely serves as a gateway to further malicious content or phishing pages. The document body, though heavily obfuscated, contains this malicious URL.

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=chest+anticoagulation+reversal+guidelines In PDF document text
    • http://files.debbiebonello.com/uploads/1/3/0/7/130775032/rupokifa.pdfIn PDF document text
    • http://files.tremptrip.com/uploads/1/3/1/8/131872281/rulutokunadipe_gexifasozopogu.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/1/0434/3581/9164/files/gabamezokokafodufozejelex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2033/6802/files/newspaper_article_example_for_students.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3690/8439/files/fedex_air_waybill_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5794/6522/files/chhichhore_movie_all_songs_mr_jatt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0238/7867/files/vefotem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4235/5865/files/71115250722.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2614/4670/files/88451865323.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2544/0669/files/28138994075.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2366/2236/files/55243427243.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0615/6190/files/ashab_e_kahf_story_urdu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c04c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC04C 5168 bytes
SHA-256: 94b89e266ab80f50b75b03221e820f7616e6e008a9b6726e7bae3a5123757c32
font_01_sfnt_off0000d1d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1D6 12344 bytes
SHA-256: 230b0b497dd78a710bfcee038efb6f331a9db17ba7d3c0d701955742733a70f4

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