Malicious PDF — malware analysis report

Static analysis result for SHA-256 6614031f781976e2…

MALICIOUS

PDF

121.9 KB Created: 2020-08-03 11:13:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 344eb7be9e342124e894b180da027135 SHA-1: 3a29fa8b4e389411a1ef5bac72a6c5dcbf9d71ae SHA-256: 6614031f781976e26cc9cb76f1ab8a0ef9439571bf3d83a5341cf002a5141f85
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one prominent link identified as a malicious redirector. This redirector leads to a URL that appears to be part of an SEO link farm designed to phish for downloads. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed for malicious redirection.

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=transport+phenomena+bird+stewart+lightfoot+pdf In PDF document text
    • http://files.cwwdelta.com/uploads/1/3/0/7/130740249/lodejesesaf-tukudovilew-wusedepubok.pdfIn PDF document text
    • http://files.fangirlyarn.com/uploads/1/3/1/3/131383826/tiduzebubasu.pdfIn PDF document text
    • http://files.stmanvel.org/uploads/1/3/2/3/132302759/xaxololavibinarele.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/1/0434/7301/0850/files/62950962589.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8721/7319/files/kubodeneso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/2777116224.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2925/8649/files/departamentos_de_guatemala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7817/9221/files/7603298418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5871/6054/files/59861840270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0446/8134/files/54212110852.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/66948010124.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6404/7269/files/34569594708.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2995/4721/files/wutafaside.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3363/9584/files/25694737854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7278/2489/files/gisuwenujosamikajugok.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 7

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_off0001a032.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A032 5636 bytes
SHA-256: fc29a9ef224f7d8381bbf8b3f6cc3f405bedebe161fa7e5391aca14874b7ecda
font_01_sfnt_off0001b342.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B342 11288 bytes
SHA-256: 3f2edb69a1b3c03933c121daa3cfdec76d40ac69211d0ef3d7319dc3261f01e9

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