Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f4d072aab8a8a38…

MALICIOUS

PDF

12.3 KB Created: 2019-04-30 04:32:05 +01:00 Authoring application: mPDF 5.7
MD5: b198e17a2801706518ecc8d27d9ebb3a SHA-1: e8c20db00c283d6deffc746799b94d21f2185b40 SHA-256: 9f4d072aab8a8a38aef32466ab35a97082bc4e571296e50981f4db4ee3a9e28e
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic. While the specific URLs are marked as benign, the sheer volume and structure suggest a malicious intent, possibly for SEO poisoning or to distribute further malware. The ML_NYX_PDF_MALICIOUS classifier also flagged the document with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8780

Heuristics 2

  • 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 http://loaminoo.linkpc.net/8090090096090092/Pastorale-by-Jesse-Russell.pdf
    • http://loaminoo.linkpc.net/8095096097094091/Ed-Kinsella-by-Jesse-Russell.pdf
    • http://loaminoo.linkpc.net/9096092099092096/The-Von-Bondies-by-Jesse-Russell.pdf
    • http://loaminoo.linkpc.net/7097096093090095/The-Auteurs-by-Jesse-Russell.pdf
    • http://loaminoo.linkpc.net/1090098097095099099/Lager-by-Jesse-Russell.pdf
    • http://loaminoo.linkpc.net/8090094097092096/Maryam-by-Jesse-Russell.pdf
    • http://loaminoo.linkpc.net/9090093090095095/Theobald-of-Bec-by-Jesse-Russell.pdf
    • http://loaminoo.linkpc.net/9093096090096093/Maybach-57-and-62-by-Jesse-Russell.pdf
    • http://loaminoo.linkpc.net/1090096095098096092/The-Best-of-Benn-Speeches-Diaries-Letters-and-Other-Writings-by-Tony-Benn.pdf
    • http://loaminoo.linkpc.net/6097097098093091/Clotaire-Rapaille-by-Jesse-Russell.pdf
    • http://loaminoo.linkpc.net/1090091090094092091/Warren-Bennis-by-Jesse-Russell.pdf
    • http://loaminoo.linkpc.net/6093094097095094/Sons-of-Mordred-by-Jesse-Russell.pdf
    • http://loaminoo.linkpc.net/1090091091095097095/Treaty-of-Beaufort-by-Jesse-Russell.pdf
    • http://loaminoo.linkpc.net/1090099094090090090/Uhtred-the-Bold-by-Jesse-Russell.pdf
    • http://loaminoo.linkpc.net/6091090095099096/Toni-Senecal-by-Jesse-Russell.pdf
    • http://loaminoo.linkpc.net/6096092093093090/Carrere-and-Hastings-by-Jesse-Russell.pdf
    • http://loaminoo.linkpc.net/1090097090091095091/Albin-of-Brechin-by-Jesse-Russell.pdf
    • http://loaminoo.linkpc.net/5098097094093092/Gautier-Mississippi-by-Jesse-Russell.pdf
    • http://loaminoo.linkpc.net/8096097092094097/Battle-of-Austerlitz-by-Jesse-Russell.pdf
    • http://loaminoo.linkpc.net/1090090092092091098/Georgi-Voiteh-by-Jesse-Russell.pdf
    • http://loaminoo.linkpc.net/1090091091095097095/Treaty-of-Beaufort-by-Jesse-R

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