Malicious PDF — malware analysis report

Static analysis result for SHA-256 63b3a695a9d0d539…

MALICIOUS

PDF

46.9 KB Created: 2020-08-05 04:53:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b1fcbffb9d1a02a35b6ec9078196aca1 SHA-1: 2460663ad5fa0512d2bdacbdb47ea08b0f91d624 SHA-256: 63b3a695a9d0d53920807d066e45dcaaad9d60bf642c3384453a2b9dc484237a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to redirector infrastructure, specifically pointing to 'ttraff.com' with keywords suggesting a lure for free downloads. The ML classifier and critical heuristics strongly indicate malicious intent, likely to lead users to phishing or malware distribution sites. Although no scripts were directly extracted, the PDF structure and embedded links are designed to exploit user interest in free content for malicious purposes.

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=biochemistry+by+lehninger+pdf+free+download In PDF document text
    • http://files.aliciaallenphotography.com/uploads/1/3/1/4/131408928/301e4.pdfIn PDF document text
    • http://files.crossfit-galveston.com/uploads/1/3/1/6/131607522/xufufarodeg-beraxapuxojebef-murudojivubifa.pdfIn PDF document text
    • http://files.bishopgumbleton.com/uploads/1/3/1/3/131379371/tokasinipegog.pdfIn PDF document text
    • http://files.boulevardathens.com/uploads/1/3/2/6/132682640/9346233.pdfIn PDF document text
    • http://files.teachergoals.org/uploads/1/3/1/3/131378993/fceacbc3091.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/1/0433/4131/6249/files/bepantol_pomada_bula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sivezijikok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2421/9293/files/memupipemejoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6980/0597/files/1820783541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7083/2283/files/54506894118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4218/6150/files/nubavomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6249/1286/files/23874922990.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5990/2624/files/the_new_encyclopedia_of_modern_bodybuilding_francais.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2394/9224/files/nejumatot.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_off000065a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65A6 4416 bytes
SHA-256: feac2890d66c9c537e55711bfd561919c51fef82ab23cb06ddbb342a2082b988
font_01_sfnt_off0000753a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x753A 5952 bytes
SHA-256: 891fc7ab4aef8ac99d7c55546a254c5d4923183ecff1f0405f927e9c25f3493a
font_02_sfnt_off00008968.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8968 10656 bytes
SHA-256: 410473ca7e3d0dc0c68d8dc8dfe60765c3f9394cbf81d2dd19e7597dc028bdd0

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