Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9b7cc36172763b1…

MALICIOUS

PDF

49.7 KB Created: 2020-08-17 15:32:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 93a1926fd31709dadb8af7807ccca088 SHA-1: ef795cad4fe2a641cf14037b7abba2230bed0571 SHA-256: f9b7cc36172763b16cd929e06eea66cd152ce25daf8c18bfc851d988141d4beb
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it's a malicious redirector, pointing to 'ttraff.ru'. It also exhibits characteristics of an SEO link farm, embedding a large number of external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL and several Shopify URLs. The primary attack pattern involves luring users through these embedded links, with 'ttraff.ru' being the most suspicious destination.

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=the+social+network+movie+questions+answer+key In PDF document text
    • http://files.hannkhigg.com/uploads/1/3/1/4/131406182/wejisevuminibebizema.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/1/0433/0687/7080/files/5137558887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8747/9455/files/84412631916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1766/5703/files/mebesavuberezom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3102/6071/files/blender_deform_mesh_with_object.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/ubuntu_chrome_ppa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5982/1209/files/86785029893.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6224/7075/files/maths_questions_for_competitive_exams_with_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0271/4536/files/61117212564.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75901524911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5928/1061/files/descriptive_statistics_and_inferential_statistics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6734/1981/files/introduction_to_bayesian_statistics_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1320/8226/files/laralaropazegopolumulilux.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 3

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_off0000778d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x778D 5312 bytes
SHA-256: 6cde6bba46c094bffaee0183dca4118fae8c10cd80c1456765a7d562b7e7021b
font_01_sfnt_off0000898a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x898A 9988 bytes
SHA-256: 497beda855e850f3eb58b88db6a8057a5fdb9ce34081028d492a80bd2b557eb3
font_02_sfnt_off0000ab96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB96 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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