Malicious PDF — malware analysis report

Static analysis result for SHA-256 f29df8ed3f67cb88…

MALICIOUS

PDF

38.9 KB Created: 2020-08-14 04:16:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b658411552d56db46563e3fb6e891a25 SHA-1: ebaf8f591fc2ef0f7e0e435cd18bb653f5240ebf SHA-256: f29df8ed3f67cb88ba001dd3f9bad8f9452fb468253b67662916643697c82b6b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF files. The primary malicious URL is https://ttraff.cc/wb?keyword=dental%20caries%20articles%20pdf, which likely serves as the initial lure to a malicious payload.

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.cc/wb?keyword=dental%20caries%20articles%20pdf In PDF document text
    • http://files.millrdcommunityspace.ca/uploads/1/3/0/7/130775402/jimig.pdfIn PDF document text
    • http://senovapet.ruhlandmandolins.com/uploads/1/3/2/7/132740328/vusidujetigagagej.pdfIn PDF document text
    • http://sixatej.davinciinitiative.org/uploads/1/3/1/0/131070792/jurefunopugege.pdfIn PDF document text
    • http://files.afoxhunting.com/uploads/1/3/1/8/131856212/7577868.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/1/0428/6211/7030/files/619389578.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2652/0987/files/bitusibozuxuboxavusonu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5055/7855/files/rapix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8439/8236/files/el_aprendiz_brujo_pnl.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1648/6040/files/jonuvipikole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8394/7427/files/93888732612.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0864/5541/files/23680888495.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9105/8076/files/post_office_rd_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0885/1098/files/78198828025.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6504/1311/files/synapse_script_executor.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 5

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_off000059c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59C8 5148 bytes
SHA-256: 7400e47d400b267f431b0da34ae29f3c3de68ac81c584193cc9865d0888cff26
font_01_sfnt_off00006b58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B58 9976 bytes
SHA-256: 3f1f35922c0f53f4695cb8c5a36192041ca8cae6a8037b2765d14348137cd50c

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