Malicious PDF — malware analysis report

Static analysis result for SHA-256 694d0cae3df7d19f…

MALICIOUS

PDF

102.6 KB Created: 2020-08-12 12:03:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cfd77c00e37c35e848b38ffa33ffb66a SHA-1: 877a75127ec059725429b5d512d092bc5420eb2c SHA-256: 694d0cae3df7d19f0b64a1efdb4e5e07b89bd529189452c66b505aa39d21f2ca
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains a URL that matches the redirector, suggesting an attempt to trick users into visiting a malicious site. The presence of many external PDF links, some with numeric slugs, indicates a link farm SEO tactic to attract victims.

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=staphylococcus+aureus+skin+infection+pdf In PDF document text
    • http://files.tableviewlodge.co.za/uploads/1/3/0/9/130968981/fuvupuzajovur.pdfIn PDF document text
    • http://files.columbiahill.org/uploads/1/3/0/8/130813887/fobuwi.pdfIn PDF document text
    • http://files.sablecatalchemy.com/uploads/1/3/2/6/132682820/zejixaga_nerakerelutipe_polifep.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/1/0437/4695/1319/files/computer_lab_technician_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2597/2904/files/riripufoxesemowakujam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1542/1599/files/bank_10th_bipartite_settlement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9751/3381/files/vezenakuwovirunibugapumik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7533/8389/files/xilewiwazeviviwisegex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rewosegukedisupagur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7651/8049/files/71174687322.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/1833/3858/files/application_layer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8410/2297/files/b._v._ramana_higher_engineering_mathematics_mcgraw_hill_education.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 6

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_off00014f0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F0E 5512 bytes
SHA-256: 174b945ee3de19aec0fbae1ee20575c4963904a924ee510091abecb8f5a134b6
font_01_sfnt_off000161c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x161C5 13048 bytes
SHA-256: e5c4821e2e202ce8a7a2d0ba8c50d7800ba3b287a4be5226f22a3c1fef4fdaeb

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