Malicious PDF — malware analysis report

Static analysis result for SHA-256 685f80f29268f161…

MALICIOUS

PDF

50.9 KB Created: 2020-08-06 13:12:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a33c9b8b707e75934c6ca6405ab1befc SHA-1: 4eb570557db881549a2e438a5175aa50afb0c515 SHA-256: 685f80f29268f161f09e39442a3f94c543b6d776052171a761d51f20c968f531
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.com) that is known to host malicious content. The document body, though heavily obfuscated, includes the same redirector URL, suggesting an attempt to lure users into clicking it under the guise of a free download. The ML classifier strongly indicates maliciousness, and the presence of a link farm further supports a phishing or scam attempt.

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=natural+causes+of+air+pollution+pdf In PDF document text
    • http://womoro.gracefulrosaries.com/uploads/1/3/0/8/130813420/00de91dc.pdfIn PDF document text
    • http://rabawubuz.stannartsandculturalcenter.org/uploads/1/3/0/8/130813834/7970335.pdfIn PDF document text
    • http://files.studio519.net/uploads/1/3/0/7/130776542/024069.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/1/0429/1375/9395/files/1864991430.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/metegemekipezafekude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6584/3620/files/modafat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9318/1095/files/fusionner_des_fichiers_en_un_seul_en_ligne.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4077/6093/files/tovexufavoganu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5809/2439/files/52853956569.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8135/1839/files/jefowafenobilenugirupuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3128/2335/files/17097300976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/49118620120.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1599/4529/files/65146500504.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007c71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C71 5000 bytes
SHA-256: 2efad495106094a5751bbfc39cba236dad3e3bda6e8560f9339b6270f974dd56
font_01_sfnt_off00008d7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D7C 10328 bytes
SHA-256: 307adf7710b97d2c9089bcf70421bcb9c61cc59869449a9465bef37943a9d9f8
font_02_sfnt_off0000b0d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0D1 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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