Malicious PDF — malware analysis report

Static analysis result for SHA-256 039c443451368e3b…

MALICIOUS

PDF

44.1 KB Created: 2020-08-09 10:46:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9e47a7ef94a15ba71f4011703c83cd03 SHA-1: 2f300a6f16ecced256a157ce7cb22d4a64de7869 SHA-256: 039c443451368e3bdda326cbd71cd1248f5f748eb9a00578737748d864690876
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) that is flagged as malicious. This suggests a phishing or scam attempt, likely using the 'free download' lure. The ML classifier also strongly indicated maliciousness, supporting the assessment of a malicious redirector being used to deliver a payload or lead to a phishing site.

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=berlin+blockade+and+airlift+pdf In PDF document text
    • http://files.hollywoodfashionmerchandise.com/uploads/1/3/1/3/131384559/2886386.pdfIn PDF document text
    • http://files.ellawatkinsactor.com/uploads/1/3/1/6/131606491/272d1ae9.pdfIn PDF document text
    • http://files.wessidevibrationsinc.com/uploads/1/3/0/7/130739059/tumopesag.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/1/0435/0722/0635/files/28789818398.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9795/6258/files/anita_desai_games_at_twilight.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4937/6161/files/jaxemogiraniwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3444/2908/files/jabozedugewovaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8806/8254/files/gutewux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6914/4230/files/dinaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/golisepabegapefeni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3144/3094/files/34531969622.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0842/5123/files/zugegexaxusejelukanubemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1987/9079/files/98999140406.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000631e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x631E 5012 bytes
SHA-256: c02c99eafa0af1f420b13a0082be7fd65a09edce94a0f1827e62fd249efa4e55
font_01_sfnt_off00007426.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7426 9824 bytes
SHA-256: 777c0a3a65b858af010cf0192d8872362089556bb9eaacb2629e0516c9e56078
font_02_sfnt_off000095b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95B6 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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