Malicious PDF — malware analysis report

Static analysis result for SHA-256 325333326e5e262a…

MALICIOUS

PDF

42.7 KB Created: 2020-08-09 01:01:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a7f34266505bb875e82d402fd2aa232f SHA-1: 6939da7eced595956e82c5d5fe3066883421a899 SHA-256: 325333326e5e262a7b584d875f8e39ae5b40a6b53ca4a4da61f051b151956d4c
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The primary malicious URL identified is https://ttraff.ru/wb?keyword=angle%20relationships%20test%20pdf, which is part of a larger infrastructure distributing links to numerous PDFs hosted on platforms like Shopify. This suggests a campaign focused on SEO poisoning or phishing by luring users to malicious sites through seemingly benign documents.

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.
  • 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.ru/wb?keyword=angle%20relationships%20test%20pdf
    • http://files.dapstempest.com/uploads/1/3/1/1/131164011/829447.pdf
    • http://sutera.johnnykjamesphotography.com/uploads/1/3/0/7/130738531/9212b76.pdf
    • http://files.adventuresav.com/uploads/1/3/1/4/131408970/241a9da.pdf
    • http://files.dancetalentcompetition.com/uploads/1/3/1/3/131378838/734e438.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/44628440260.pdf
    • https://cdn.shopify.com/s/files/1/0429/3656/5923/files/62028431565.pdf
    • https://cdn.shopify.com/s/files/1/0429/9004/3287/files/kituzopopupawawudakeze.pdf
    • https://cdn.shopify.com/s/files/1/0430/7196/3296/files/6424893429.pdf
    • https://cdn.shopify.com/s/files/1/0428/5969/2198/files/67637340902.pdf
    • https://cdn.shopify.com/s/files/1/0431/8432/4770/files/15580936177.pdf
    • https://cdn.shopify.com/s/files/1/0429/3017/6159/files/nepojagilaxurotetunerisen.pdf
    • https://cdn.shopify.com/s/files/1/0439/4316/6107/files/ragusus.pdf
    • https://cdn.shopify.com/s/files/1/0431/6610/5759/files/danny_phantom_episode_list.pdf
    • https://cdn.shopify.com/s/files/1/0433/7238/0318/files/wozuviludog.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_off000066c4.bin
a53a181c51a2eadac2aa997c62dbd2083989169a76264bde829b82babf4ad548		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66C4 5292 bytes
font_01_sfnt_off000078c1.bin
31f1ce9e15543346bbf80fd1d91efe00aa960c4e848eb3cd8d7c0eaf32c4a8bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78C1 11244 bytes

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