Malicious PDF — malware analysis report

Static analysis result for SHA-256 4081fcda402b287d…

MALICIOUS

PDF

44.7 KB Created: 2020-08-06 12:56:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d5d23d4a621095667b1f164d8d1fb8f8 SHA-1: 12664fec20b50856e681d813c6ce3c4cf7d60ac8 SHA-256: 4081fcda402b287d943af2fdefc0845cf742b2ca363fe2c2736b508d32370a38
194 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to numerous external PDFs, with the primary link redirecting to known malicious infrastructure at 'ttraff.cc'. The ML classifier strongly indicated maliciousness. The document body, though heavily obfuscated, contains the primary malicious URL, suggesting the document's purpose is to drive traffic to this redirector.

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/pify?keyword=borax+bead+test+pdf In PDF document text
    • http://files.ncscja.org/uploads/1/3/2/6/132681560/xesavuweso.pdfIn PDF document text
    • http://files.chandao.co.uk/uploads/1/3/1/8/131872055/426918.pdfIn PDF document text
    • http://files.shinefromwithinconsulting.com/uploads/1/3/0/8/130813898/baad17e6f4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1351/9006/files/lajof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4106/8958/files/wofuwijaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8797/0975/files/73788057590.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7525/5961/files/37036549204.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6708/8791/files/digestion_de_carbohidratos_lipidos_y_proteinas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7279/0428/files/73086896008.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6891/5863/files/gebazizusomutisud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/52889541926.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3687/6695/files/halimbawa_ng_action_plan_sa_filipino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7141/5196/files/77980744583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1571/6513/files/animal_farm_novel.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B7 4896 bytes
SHA-256: 9c4e9a61a6b61973c4d5f76d5802dd50b6239ba28933ca9e8541f2d9bdde1ba5
font_01_sfnt_off00007365.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7365 10564 bytes
SHA-256: 5c0aadc4823b35c2d37dd7c853d24b291f68653ef7af8ca8430c2ce58526362a
font_02_sfnt_off00009779.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9779 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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