Malicious PDF — malware analysis report

Static analysis result for SHA-256 a36eb98d2a57d44f…

MALICIOUS

PDF

40.1 KB Created: 2020-08-18 19:54:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c0675a409abbbf34eed7dfd3dc4bd9ba SHA-1: 34ae4b14fa1f1036de1c58be91582792614b5811 SHA-256: a36eb98d2a57d44fd37c663b6cfde9da68e66b825dc4ffbdc2b3b9aed16543aa
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is likely used to redirect users to a malicious site. The document body, though partially obfuscated, contains text related to 'sea cadet uniform suppliers' and the malicious URL, suggesting a lure to entice clicks. The presence of numerous embedded links, many pointing to Shopify, further supports the link farm heuristic, indicating an attempt to obscure the malicious destination.

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=sea+cadet+uniform+suppliers In PDF document text
    • http://files.foodbiomedicalscience.com/uploads/1/3/2/6/132681394/7e1b9ce39.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/1/0431/1629/8393/files/cambridge_primary_science_learner_s_book_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0041/3856/files/bujidarakasaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2757/0596/files/mulula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6056/0021/files/30914167251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7367/4142/files/sexeweveribaroruwol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0120/8232/files/74699876184.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/7244589197.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1111/2092/files/fibuk.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 4

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_off000050be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50BE 5288 bytes
SHA-256: c99c2daa03abbf3cc5c443c2812f95361d791eb660ea480bed3c7f2d85bacfa6
font_01_sfnt_off0000628d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x628D 10896 bytes
SHA-256: cbe940a6ff5850397eb02365a3d01af6b8be0820b9179224d1f45d2be8cd7814
font_02_sfnt_off000085e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85E6 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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