Malicious PDF — malware analysis report

Static analysis result for SHA-256 f35ff8e4f5293477…

MALICIOUS

PDF

49.2 KB Created: 2020-08-15 13:53:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e8f640ed6b1fe95d33c403b769381d0c SHA-1: 5152e937654ceb910bcb9fa28c7c4f621374295f SHA-256: f35ff8e4f5293477634d88f4b0d6e69fbb6d31aca8b012ea231eb3dc12a9056f
94 Risk Score

Malware Insights

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

The PDF document was flagged by a machine learning classifier as malicious and contains a critical heuristic indicating a link to known malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.com/wb?keyword=stages%20of%20public%20policy%20making%20pdf. This suggests the document's purpose is to lure users into clicking the link, which then redirects them to a harmful destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/wb?keyword=stages%20of%20public%20policy%20making%20pdf
    • http://files.moretonislandfishingcharters.com/uploads/1/3/2/6/132681757/29f69500bb50.pdf
    • http://files.juliewiegand.com/uploads/1/3/1/4/131453480/dd1b72145be5fa.pdf
    • https://cdn.shopify.com/s/files/1/0433/6451/6005/files/debate_topics_for_high_school_students.pdf
    • https://cdn.shopify.com/s/files/1/0432/9403/2025/files/rugetuwife.pdf
    • https://cdn.shopify.com/s/files/1/0432/8026/9462/files/zaguraguladokumivovijivel.pdf
    • https://cdn.shopify.com/s/files/1/0430/8946/1410/files/18695412901.pdf
    • https://cdn.shopify.com/s/files/1/0435/8212/8283/files/22232649798.pdf
    • https://cdn.shopify.com/s/files/1/0431/7249/5524/files/84395574901.pdf
    • https://cdn.shopify.com/s/files/1/0428/9832/5663/files/96730943223.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_off00008299.bin
b049c5ad5037ec7ff95c5451274dd63324d35d0f244967f626b6a754c75cf255		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8299 5788 bytes
font_01_sfnt_off00009643.bin
b37dcf4df927586ffb3c7604b72f7f178d68f48ca59e0378f55a4d902747a069		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9643 10024 bytes

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