Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ca4eb3742f361f4…

MALICIOUS

PDF

41.4 KB Created: 2020-08-04 20:56:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fda0657c121d52c9a889609b1330d21b SHA-1: d59b3739d1c65465e3cdbf233d72a586d6e31180 SHA-256: 4ca4eb3742f361f49482c8552dcbf98cceead732c13117035a120b9afddb6fa0
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to funnel victims to further malicious content. The document body itself contains numerous links to external PDFs hosted on Shopify and other domains, suggesting a link farm or SEO poisoning tactic to distribute the malicious redirector. The ML classifier also strongly indicated maliciousness.

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=adeste+fideles+latin+pdf In PDF document text
    • http://files.norwichmonument.com/uploads/1/3/1/4/131407558/lafuwes.pdfIn PDF document text
    • http://xelubu.davidgreenlee.com/uploads/1/3/0/7/130739919/mabotixufiz.pdfIn PDF document text
    • http://files.alliekonkoldesign.com/uploads/1/3/2/6/132695578/vimudaxorodefokev.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/1/0433/0687/7080/files/19085525902.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80023348890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7430/4662/files/85414020057.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7975/3121/files/82884853945.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fofigez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9372/1255/files/misige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0096/2977/files/35479424052.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9927/5935/files/81631287349.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5512/8477/files/paganatasewurok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1260/4582/files/41265671389.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_off000065d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65D4 4928 bytes
SHA-256: 76d854f3a2db0044310c3ac7795a5d5bf473e8082f11e34bcfa4e0386d19c861
font_01_sfnt_off000076b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76B2 10052 bytes
SHA-256: 14f403b4fa23245625c1b8587ee5e0dda68d7592711cace0223250cd76c152b8

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