Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2d21cb6eb515010…

MALICIOUS

PDF

39.7 KB Created: 2020-08-06 08:21:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3a6c078e539babf617bc9dc77966e854 SHA-1: 1020e88a8f9105f4e48124ec5719367d8a725f5b SHA-256: e2d21cb6eb515010d906d8590e9e48cbdc35e93b1fbf876d92f883eda40e7e30
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with a critical heuristic firing indicating a malicious redirector link to 'ttraff.com'. Another heuristic identified a PDF link farm, suggesting an attempt to artificially inflate search engine rankings or distribute malicious content. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wb?keyword=bently%20nevada%203500%2042%20manual', which is likely intended to trick users into clicking it. No scripts were extracted from this sample.

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/wb?keyword=bently%20nevada%203500%2042%20manual In PDF document text
    • http://files.brantheritagequiltersguild.com/uploads/1/3/1/8/131871569/jejun-juvoniwe-ratafarufa-juwetaxevufawo.pdfIn PDF document text
    • http://files.theguerrillarep.com/uploads/1/3/0/7/130738859/89ab59.pdfIn PDF document text
    • http://files.milepost0creative.com/uploads/1/3/1/4/131408142/8088500.pdfIn PDF document text
    • http://files.aquinasmaths.com/uploads/1/3/2/7/132712306/busula_mitik.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/1/0431/5847/0816/files/osrs_soul_altar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0579/5752/files/25668487750.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6147/6504/files/dunofuropitewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8827/1767/files/77871670097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/1517/2259/files/important_banking_awareness_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3309/1480/files/7256827620.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7873/8335/files/96249750677.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7135/4533/files/bijeridi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1839/3499/files/wijefijikowig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2393/2311/files/2161109278.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5480/9756/files/69822861783.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9975/8498/files/change_adjectives_into_adverbs_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9403/2025/files/97703676763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1516/6357/files/hard_reset_iphone_6s_plus.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D70 5556 bytes
SHA-256: f5074b6672d358d99e4db87ec4549ed07f7c3f8e1e87e7d03378f2e934cfc0e3
font_01_sfnt_off0000706a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x706A 9724 bytes
SHA-256: 99cf22dfe97b93f373ad178908e38fd7b3c43c512ba3df84f6b8f4f7877a01ac