Malicious PDF — malware analysis report

Static analysis result for SHA-256 85ebd08311d9afdf…

MALICIOUS

PDF

45.4 KB Created: 2020-08-03 04:19:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a986319d54ff9b4ca4e2d492aebb810a SHA-1: f403ba40e4f2d7661c690cebe5e64ab5253ca733 SHA-256: 85ebd08311d9afdf42e9185482a8f4ab4ec5aab640c584eb5bcb6eecf30c9fbc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document contains numerous links, many pointing to a redirector service (ttraff.ru) that is associated with malicious activity. The document body, though obfuscated, contains a URL that also leads to this redirector, suggesting a phishing or malware distribution attempt. The presence of multiple embedded links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

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.ru/pify?keyword=kawasaki+engine+service+manual+pdf In PDF document text
    • http://files.jenniferjoseph.org/uploads/1/3/1/8/131856852/relutelofapalejuzoz.pdfIn PDF document text
    • http://files.crochetstylesbyashley.com/uploads/1/3/1/6/131636808/wegufevezudo.pdfIn PDF document text
    • http://files.passoverleague.org/uploads/1/3/0/7/130739211/3583267.pdfIn PDF document text
    • http://files.jessalynlevesque.com/uploads/1/3/2/8/132816036/nojubijugam-tapepepagufezo.pdfIn PDF document text
    • http://files.monashsoccerclub.com/uploads/1/3/0/9/130969206/a1a40a.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/1/0431/8517/6736/files/lajulutiginu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3189/4944/files/pelunesezobojiburomudakak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1179/2286/files/37171366254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32732230761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0923/6374/files/misipukunimizakinolobiwun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7426/3963/files/soxejibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0647/3886/files/watch_dragon_ball_super_online_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7974/5192/files/69748411671.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7722/8957/files/72993125121.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5101/5577/files/74075946509.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2644/6498/files/wenolexaluvus.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70BF 5660 bytes
SHA-256: 7bc9394be31879e940fe0b58ed3f4b1ca2e08e8f5814bdebf8e896ba58297520
font_01_sfnt_off00008412.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8412 10568 bytes
SHA-256: 0497973366e974a18972830ed2cf775f3a08bd33cd43594c198788842eacac8c

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