Malicious PDF — malware analysis report

Static analysis result for SHA-256 cebef0160dc469fb…

MALICIOUS

PDF

43.9 KB Created: 2020-08-28 05:29:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 65515d9659149b5253685e4ac1c58405 SHA-1: ab8534d0f0f1977e07bdb45cb1adfc2bb971ae83 SHA-256: cebef0160dc469fba922129a85a0be1bc4576286f256fa3e028a97c5a63d197b
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the critical heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The primary malicious URL is https://ttraff.ru/pify?keyword=toyota+4runner+1990+manual. While the document body contains garbled text, the presence of numerous embedded links, many pointing to Shopify domains, suggests a tactic to obscure the malicious redirector. The PDF_SEO_LINK_FARM heuristic further indicates a large number of external links, likely for SEO manipulation or to host further 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=toyota+4runner+1990+manual In PDF document text
    • http://files.selapfp.org/uploads/1/3/1/4/131437775/kovijaz.pdfIn PDF document text
    • http://files.okaypanic.ca/uploads/1/3/0/9/130969151/f6cec409bf50858.pdfIn PDF document text
    • http://files.susangsterrett.com/uploads/1/3/1/3/131380476/441203.pdfIn PDF document text
    • http://files.thefeltfactory.co.nz/uploads/1/3/0/7/130776841/xizixexa-dajawotubep-fekifomidele.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/1/0430/2536/7194/files/que_es_la_depresion_psicologia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8544/7833/files/30469009747.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3319/6706/files/cvs_health_powerpoint_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3308/4575/files/3525759614.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3901/4562/files/sample_rental_agreement_format_tamil_nadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3030/6203/files/98013497306.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7595/3049/files/tesupafuviwumolowafinir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7596/6878/files/turnigy_accucell_6_manual.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67B5 5140 bytes
SHA-256: c1e8197a5c4d7a0f90d6f495c7ee841a0dfe92c44dfd16d2871c95402cd3ed75
font_01_sfnt_off00007926.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7926 12932 bytes
SHA-256: 5ffb0a9e338735e0b95c431c3be87b4fd2c9fea3dd2375d51d5c81a6ae0b422c

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