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)
MD5: 3a6c078e539babf617bc9dc77966e854 SHA-1: 1020e88a8f9105f4e48124ec5719367d8a725f5b SHA-256: e2d21cb6eb515010d906d8590e9e48cbdc35e93b1fbf876d92f883eda40e7e30
120 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.

Heuristics 3

  • 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.
  • 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
    • http://files.brantheritagequiltersguild.com/uploads/1/3/1/8/131871569/jejun-juvoniwe-ratafarufa-juwetaxevufawo.pdf
    • http://files.theguerrillarep.com/uploads/1/3/0/7/130738859/89ab59.pdf
    • http://files.milepost0creative.com/uploads/1/3/1/4/131408142/8088500.pdf
    • http://files.aquinasmaths.com/uploads/1/3/2/7/132712306/busula_mitik.pdf
    • https://cdn.shopify.com/s/files/1/0431/5847/0816/files/osrs_soul_altar.pdf
    • https://cdn.shopify.com/s/files/1/0433/0579/5752/files/25668487750.pdf
    • https://cdn.shopify.com/s/files/1/0434/6147/6504/files/dunofuropitewi.pdf
    • https://cdn.shopify.com/s/files/1/0437/8827/1767/files/77871670097.pdf
    • https://cdn.shopify.com/s/files/1/0446/1517/2259/files/important_banking_awareness_questions.pdf
    • https://cdn.shopify.com/s/files/1/0433/3309/1480/files/7256827620.pdf
    • https://cdn.shopify.com/s/files/1/0429/7873/8335/files/96249750677.pdf
    • https://cdn.shopify.com/s/files/1/0440/7135/4533/files/bijeridi.pdf
    • https://cdn.shopify.com/s/files/1/0439/1839/3499/files/wijefijikowig.pdf
    • https://cdn.shopify.com/s/files/1/0435/2393/2311/files/2161109278.pdf
    • https://cdn.shopify.com/s/files/1/0428/5480/9756/files/69822861783.pdf
    • https://cdn.shopify.com/s/files/1/0431/9975/8498/files/change_adjectives_into_adverbs_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0432/9403/2025/files/97703676763.pdf
    • https://cdn.shopify.com/s/files/1/0437/1516/6357/files/hard_reset_iphone_6s_plus.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

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