Malicious PDF — malware analysis report

Static analysis result for SHA-256 d95ab4287197421e…

MALICIOUS

PDF

103.9 KB Created: 2020-10-14 18:28:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e976e0741a8cc364f5074d759a8de5f8 SHA-1: 65ef5e9c8ef13fff628b77b5c13f5d127ee609f2 SHA-256: d95ab4287197421e01337b6ac55776231955b3d79a9fd141a5c5b57aa1de733b
94 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.club/pify?keyword=galapagos+islands+tourist+information+guide`. The document body, though heavily obfuscated, appears to contain text related to Galapagos Islands tourism, suggesting a lure. The ML classifier also strongly flagged this PDF as malicious. The primary attack vector is likely a phishing attempt to redirect the user to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • 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.club/pify?keyword=galapagos+islands+tourist+information+guide
    • https://cdn-cms.f-static.net/uploads/4365525/normal_5f86f821b9e0e.pdf
    • https://cdn-cms.f-static.net/uploads/4365562/normal_5f87025de073e.pdf
    • https://cdn-cms.f-static.net/uploads/4366347/normal_5f8710bd508f6.pdf
    • https://cdn-cms.f-static.net/uploads/4365626/normal_5f86f42d39632.pdf
    • https://cdn-cms.f-static.net/uploads/4365656/normal_5f87024153604.pdf
    • https://cdn-cms.f-static.net/uploads/4365552/normal_5f8706e3e1bd8.pdf
    • https://cdn-cms.f-static.net/uploads/4366004/normal_5f86f9474acfd.pdf
    • https://cdn-cms.f-static.net/uploads/4365639/normal_5f8705a9bcaac.pdf
    • https://site-1036633.mozfiles.com/files/1036633/57480770867.pdf
    • https://site-1042496.mozfiles.com/files/1042496/tebabezalapu.pdf
    • https://site-1048248.mozfiles.com/files/1048248/kebatijobexedajizisof.pdf
    • https://site-1039852.mozfiles.com/files/1039852/xakenali.pdf
    • https://uploads.strikinglycdn.com/files/6d95d750-6469-4ace-82aa-0b564b130f5b/64681986938.pdf
    • https://uploads.strikinglycdn.com/files/8e21c5e3-ad6a-4426-8ec8-dee6a6e00f5e/62315710220.pdf
    • https://uploads.strikinglycdn.com/files/b00d33d9-7bc2-4ecc-a959-9b13c95e4cbd/77011730389.pdf
    • https://uploads.strikinglycdn.com/files/30428596-d4eb-4e6e-bfdf-6545ae453ef9/wuxoladuraworuvizopamako.pdf
    • https://uploads.strikinglycdn.com/files/5e3b06fd-a33c-460e-976f-4dad64f55bf0/zagivebidi.pdf
    • https://uploads.strikinglycdn.com/files/c044dbb0-6c7f-4f57-972e-72436b9aaef6/49405062781.pdf
    • https://uploads.strikinglycdn.com/files/420dffb2-d5ea-40a9-88d3-973d9da99dc9/bisulobetikepifa.pdf
    • https://uploads.strikinglycdn.com/files/4316e355-98dc-4f04-b4e5-8119b755a75c/27904607500.pdf
    • https://uploads.strikinglycdn.com/files/dc7a3e68-6f30-43a5-af77-00f7966830cd/bulegurazipobolibonis.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014366.bin
aaaf3c54f18a793c26040425e9970093d8bda1d98b3c474babbb1579b0d9c21e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14366 5392 bytes
font_01_sfnt_off000155a7.bin
6cfd00c5f21cdc7932c25ee36b75ecd5ba71ed7adbe85ec88e3c4e3718eaf89a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x155A7 10896 bytes
font_02_sfnt_off00017b0c.bin
b8f04e953959871f7496f70f3fb80ff6682d601043192d1b7c97fcf1ba4d864d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17B0C 16308 bytes

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