Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a08de02bbb0996f…

MALICIOUS

PDF

17.1 KB Created: 2019-05-01 18:12:08 +01:00 Authoring application: mPDF 5.7
MD5: f865e2915390e4731ddf5b648323b3f9 SHA-1: 23a95d06e4ab97d9dca2b5a20955432019741eeb SHA-256: 1a08de02bbb0996fa5af0a095ce715fdaa9b3605011e75def8565269a13e70da
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to distribute malicious content. The ML classifier strongly indicated maliciousness. While no scripts were extracted, the PDF structure and embedded URLs suggest a content-luring or redirection attack. The primary IOCs are the numerous URLs pointing to external PDF documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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/2091096099093099/Vampire-Games-Vampire-For-Hire-6-by-J-R-Rain.pdf
    • http://loaminoo.linkpc.net/2098091090099091/Vampire-Fire-Vampire-for-Hire-12-by-J-R-Rain.pdf
    • http://loaminoo.linkpc.net/2097096098091096/American-Vampire-Vampire-for-Hire-3-by-J-R-Rain.pdf
    • http://loaminoo.linkpc.net/2098091093090095/Vampire-Sun-Vampire-for-Hire-9-by-J-R-Rain.pdf
    • http://loaminoo.linkpc.net/2098090097095097/Moon-Shadow-Vampire-for-Hire-11-by-J-R-Rain.pdf
    • http://loaminoo.linkpc.net/2098090097095096/Moon-Dragon-Vampire-for-Hire-10-by-J-R-Rain.pdf
    • http://loaminoo.linkpc.net/3097096092094097/Moon-Child-Vampire-for-Hire-4-by-J-R-Rain.pdf
    • http://loaminoo.linkpc.net/4095098097095097/Spinoza-for-Hire-Two-Vampire-Mystery-Novellas-by-J-R-Rain.pdf
    • http://loaminoo.linkpc.net/4095098097095091/Moon-Investigations-Two-Novels-Vampire-for-Hire-3-4-by-J-R-Rain.pdf
    • http://loaminoo.linkpc.net/4099094098090095/Kiera-Hudson-Limited-Edition-Series-One-Vampire-Shift-Vampire-Wake-amp-Vampire-Hunt-Book-1-by-Tim-O-39-Rourke.pdf
    • http://loaminoo.linkpc.net/2098092097093093/The-Vampire-Club-by-J-R-Rain.pdf
    • http://loaminoo.linkpc.net/1090093098098090094/Barhaven-s-Vampire-The-Complete-Trilogy-Plus-Vampire-Seri-amp-the-Demon-by-Maggie-Chatterley.pdf
    • http://loaminoo.linkpc.net/8093096092096098/Masks-An-Erotic-Vampire-Novel-Book-One-The-Vampire-Mask-Series-1-by-Sookie-Shepherd.pdf
    • http://loaminoo.linkpc.net/3097094096090091/Holiday-with-a-Vampire-III-Secret-Vampire-Society-2-by-Linda-Winstead-Jones.pdf
    • http://loaminoo.linkpc.net/8093096092099096/Masks-Book-One-An-Erotic-Vampire-Romance-The-Vampire-Mask-Series-1-by-Sookie-Shepherd.pdf
    • http://loaminoo.linkpc.net/1092096094097093/A-Vampire-s-Dominion-The-Stone-Masters-Vampire-3-by-Vanessa-Fewings.pdf
    • http://loaminoo.linkpc.net/3098097096097099/The-Vampire-Prince-Dark-World-The-Vampire-Wish-2-by-Michelle-Madow.pdf
    • http://loaminoo.linkpc.net/1098092093090096/A-Vampire-s-Rise-The-Stone-Masters-Vampire-1-by-Vanessa-Fewings.pdf
    • http://loaminoo.linkpc.net/3095095091094091/Captured-by-the-Vampire-Vampire-Enforcement-Agency-0-5-by-Kellie-McAllen.pdf
    • http://loaminoo.linkpc.net/1095094096090096/A-Vampire-s-Rise-The-Stone-Masters-Vampire-1-by-Vanessa-Fewings.pdf
    • http://loaminoo.linkpc.net/4099094098090095/Kiera-Hudson-Limited-Edition-Series-One-Vampire-Shift-Vampire-Wake-amp-Vampire-Hunt-Book-1-by-Tim-O-39-Rourke

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