Malicious PDF — malware analysis report

Static analysis result for SHA-256 260c834bb9c08028…

MALICIOUS

PDF

42.6 KB Created: 2020-08-02 17:25:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4b7b845d62bf83e844b15973103035e2 SHA-1: aef399b3443f0478e272b4aeb262cd6de61c6e48 SHA-256: 260c834bb9c080289add82401551da29ba5adc3ae18e470b1369f81a89b152bd
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDFs hosted on various domains. One critical heuristic indicates these links are part of a 'link farm' designed to direct users to malicious redirector infrastructure, specifically citing 'ttraff.com'. The document body, though heavily obfuscated, contains the string 'javascript unique id' and a URL that matches the redirector identified by the heuristic. This suggests the primary goal is to redirect the user to 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.com/pify?keyword=javascript+unique+id In PDF document text
    • http://files.b0ggled.com/uploads/1/3/2/6/132695829/linaviwuvibodi.pdfIn PDF document text
    • http://files.undertheskynews.org/uploads/1/3/1/8/131856907/libif-pudam-vokelose-doxejumopowafij.pdfIn PDF document text
    • http://zugoma.jongrahamphoto.com/uploads/1/3/0/7/130775429/8495001.pdfIn PDF document text
    • http://files.display101.com/uploads/1/3/0/7/130739027/dozibizokiwovitu.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/1/0433/2814/3510/files/rutuxivavaxixegaxunopepez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0201/9487/files/78789761202.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5896/1315/files/66129846555.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9261/5073/files/64029408479.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2174/6847/files/pukufelafuxifakivumowen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6179/6248/files/98178443177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8047/2984/files/xazirodusezig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8170/2303/files/atom_jsx_plugin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/baredufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4121/0011/files/4766669503.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4837/0333/files/87028272971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7929/5383/files/vumurosesatepamaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2956/0481/files/35359844793.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_off00006965.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6965 5212 bytes
SHA-256: 5eb5c5bdce1f05dd90b25de10977221eeafaa39463fbc63deef0e17030d0813a
font_01_sfnt_off00007b37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B37 10348 bytes
SHA-256: 4eb2655ec229f4109401d93f59b08cfa5776de81a3441384deb065e13cac4673

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