Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3db66b2c54e784f…

MALICIOUS

PDF

41.0 KB Created: 2020-08-02 21:00:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8f3affb25fc612c3cf9c6d0c1680b919 SHA-1: fa9fabc7b81f8dcab402cdbd012b17f2d998d6c6 SHA-256: a3db66b2c54e784ffafcf1cf78a59e38fc589c696058882e44d69b74353936e1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, with a critical heuristic firing for PDF_SEO_LINK_FARM. One of these links, https://ttraff.ru/pify?keyword=2d+list+python, is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to '2d list python' and the authoring application 'wkhtmltopdf', suggesting a potential lure related to programming or technical content. The primary attack pattern involves redirecting users to malicious infrastructure.

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=2d+list+python In PDF document text
    • http://files.movehelix.com/uploads/1/3/1/4/131483025/775146619.pdfIn PDF document text
    • http://files.traceynjohnson.com/uploads/1/3/0/7/130738870/02da2.pdfIn PDF document text
    • http://files.helenforsterbridal.com/uploads/1/3/0/7/130775436/1138898.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/1/0434/8051/4726/files/52283783071.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3730/2679/files/60574541106.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61259485886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0193/6033/files/fadirisavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fonufefijosogigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8367/7339/files/bimusosodaganuleta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4222/5831/files/purple_text_discord.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6678/4932/files/wojaxepibidajajelera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2584/1819/files/tanuja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9694/7353/files/77128342876.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4567/3377/files/tilimopozusotilotakopos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0686/9147/files/jofopibuvaza.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_off00005e28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E28 4880 bytes
SHA-256: d2a3234be837bbbdedb137b1884e964195cd45b775b305a0152f2485da620822
font_01_sfnt_off00006eca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ECA 12860 bytes
SHA-256: 065655adfda10e91d4a7b806710d97b8450cfe284b8b97b58674346f464f12ff

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