Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cf8c7c72b80e0c6…

MALICIOUS

PDF

14.7 KB Created: 2019-05-03 00:36:45 +01:00 Authoring application: mPDF 5.7
MD5: ecffaa247de6801f1d3802d779131224 SHA-1: 5dd807b99f6ab4d49571208c55c05ebf0672bcd6 SHA-256: 1cf8c7c72b80e0c6aa871f8d34bfc4653e43bc06c6a2831d6df8e4e5935808de
90 Risk Score

Malware Insights

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

The PDF document was flagged by a machine learning classifier as malicious and contains a large number of embedded links, indicating a link farm or SEO manipulation tactic. While the specific URLs extracted were labeled as confirmed benign, the heuristic 'PDF_SEO_LINK_FARM' strongly suggests malicious intent behind the creation of this document. The document body is heavily obfuscated and unreadable, preventing further analysis of its direct content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9891

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/4098099092094/Broken-Hart-The-Hart-Family-1-by-Ella-Fox.pdf
    • http://loaminoo.linkpc.net/1094096092096092/The-Hart-Family-Series-Box-Set-Books-1-4-The-Hart-Family-1-4-by-Ella-Fox.pdf
    • http://loaminoo.linkpc.net/4096099094096/Missing-Hart-The-Hart-Family-5-by-Ella-Fox.pdf
    • http://loaminoo.linkpc.net/8092090090093/Unbroken-Hart-The-Hart-Family-4-by-Ella-Fox.pdf
    • http://loaminoo.linkpc.net/1093095093094099/Shattered-Hart-The-Hart-Family-2-by-Ella-Fox.pdf
    • http://loaminoo.linkpc.net/4095097093096093/Finding-Hart-The-Hart-Family-6-by-Ella-Fox.pdf
    • http://loaminoo.linkpc.net/1090093095097095092/Elias-Baby-by-Ella-Hart.pdf
    • http://loaminoo.linkpc.net/4094097099092/Broken-by-Megan-Hart.pdf
    • http://loaminoo.linkpc.net/2091094099090099/Broken-by-Megan-Hart.pdf
    • http://loaminoo.linkpc.net/1098095094091098/Shadow-of-the-Titanic-A-Survivor-s-Story-a-Biography-of-Miss-Eva-Hart-by-Eva-Hart.pdf
    • http://loaminoo.linkpc.net/9091094092092098/Wenn-es-hart-auf-hart-kommt-by-Ben-Horowitz.pdf
    • http://loaminoo.linkpc.net/4094090094091092/The-Broken-Warrior-Navy-SEAL-Romances-by-Taylor-Hart.pdf
    • http://loaminoo.linkpc.net/1097093097092090/Need-The-MacKenzie-Family-12-by-Liliana-Hart.pdf
    • http://loaminoo.linkpc.net/2098095091091092/Scorch-The-MacKenzie-Family-11-by-Liliana-Hart.pdf
    • http://loaminoo.linkpc.net/2090092090099098/Cade-The-MacKenzie-Family-5-by-Liliana-Hart.pdf
    • http://loaminoo.linkpc.net/4097095091091098/Secrets-and-Satin-The-MacKenzie-Family-7-by-Liliana-Hart.pdf
    • http://loaminoo.linkpc.net/1094098091099092/The-MacKenzies-Happily-Ever-After-The-MacKenzie-Family-1-5-2-5-3-5-4-5-by-Liliana-Hart.pdf
    • http://loaminoo.linkpc.net/5092098094095096/Wyoming-Sweethearts-Granger-Family-Ranch-6-by-Jillian-Hart.pdf
    • http://loaminoo.linkpc.net/5092098094095091/The-Soldier-s-Holiday-Vow-Granger-Family-Ranch-2-by-Jillian-Hart.pdf
    • http://loaminoo.linkpc.net/6094093090095099/Sins-and-Scarlet-Lace-The-MacKenzie-Family-8-by-Liliana-Hart.pdf
    • http://loaminoo.linkpc.net/4094090094091092/The-Broken-Warrior-Navy-SEAL-Romances-by-Taylor

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