Malicious PDF — malware analysis report

Static analysis result for SHA-256 def872057b31ad24…

MALICIOUS

PDF

44.2 KB Created: 2020-08-08 15:56:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 91c11bc7cc7fda763612b94fb6c79bbd SHA-1: f29157104a867aa85edd320d70df6bc022be521c SHA-256: def872057b31ad24d6ac22f70b90139f8db92e4d8648ace64c7a2e216cf0c69a
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=latex+agglutination+test+procedure+pdf'. Additionally, it exhibits a PDF link farm behavior, embedding numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL and a reference to 'wkhtmltopdf', suggesting it was generated by a tool. The primary attack pattern is likely to trick users into visiting the malicious redirector, which could lead to phishing or malware download.

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=latex+agglutination+test+procedure+pdf In PDF document text
    • http://galije.zen-meditation-germany.com/uploads/1/3/1/4/131409090/1425770.pdfIn PDF document text
    • http://files.pursanovaaz.com/uploads/1/3/1/1/131164130/4585743.pdfIn PDF document text
    • http://files.cotonevineyards.com/uploads/1/3/1/4/131453522/5941920.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/1/0431/6217/3602/files/kofefixivem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2508/8168/files/maharashtra_budget_2020_in_marathi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3440/files/pisubavefuju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3461/5719/files/wexumodagoneg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8774/1599/files/28444181654.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dutevitijenunolekegek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/5578033559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5376/9123/files/automatic_irrigation_system_using_arduino_uno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7573/9553/files/realm_grinder_auto_clicker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7304/4642/files/viwegelizerewasunexu.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 2

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_off00006f07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F07 5332 bytes
SHA-256: 64a8eaf193c130ba80e6b309e23fcca891e5aaf30f9baa7e83e615b449293b88
font_01_sfnt_off00008148.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8148 10008 bytes
SHA-256: 763de48fdd2e0f9222cc6b2bfa54f719e9f8eb67fa8137eaa53cb38f781a5a43

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