Malicious PDF — malware analysis report

Static analysis result for SHA-256 673a69bea5be7c8d…

MALICIOUS

PDF

39.5 KB Created: 2020-08-17 05:02:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8a46042ac01b7251982f7f4628a293ac SHA-1: 9e233ff4c56871064b27f5015e67f5a541c8e974 SHA-256: 673a69bea5be7c8d3aad5f81eeea4df711d2f6acf2c24aaf087276f3874feee6
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 redirector infrastructure, specifically 'ttraff.cc'. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a 'molykote anti-friction coatings selection guide'. This suggests a phishing or scam attempt, likely to lead the user to a malicious site or download further malware. The ML classifier strongly supports the malicious verdict.

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.cc/pify?keyword=molykote+anti-+friction+coatings+selection+guide In PDF document text
    • http://ganog.growyourteaching.com/uploads/1/3/1/4/131437130/9365704.pdfIn PDF document text
    • http://files.hairndipitysalon.com/uploads/1/3/1/0/131071041/norimek_pilafovagarut_zitipedete_rudunibekukaxu.pdfIn PDF document text
    • http://files.eagleglobal.org/uploads/1/3/1/4/131483955/difop-gokaxekogiraso-panepopasaw.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/1/0430/6072/3865/files/bulkage_of_sand.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4923/8184/files/1891673477.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0328/1571/files/83402246028.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4092/4063/files/joxarinowudamas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7243/8947/files/17460569515.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5770/8185/files/40781432489.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5396/3678/files/aws_sysops_exam_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zugazad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8236/6629/files/zebaxuxovete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9461/3924/files/dajuvuzokimepaduruxevir.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 3

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_off00005bde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BDE 5392 bytes
SHA-256: fa494d9f4d7ba129fa6af2b5955103c29f3804e04cc9a165c922273b564107c4
font_01_sfnt_off00006e5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E5B 10320 bytes
SHA-256: cd578e29a6e121029fcb5175c2448e725d328912a1be076bd0d9bb8a367cecac

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