Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b9b7ef6044c3a11…

MALICIOUS

PDF

15.1 KB Created: 2019-05-02 18:33:18 +01:00 Authoring application: mPDF 5.7
MD5: 0e78ffeec57c8b383399de4eb6230810 SHA-1: 6988eae729132ef2314513fa4b6e066e09d8a673 SHA-256: 7b9b7ef6044c3a117ce8f57f01bb8e1f14837ca1062da0d4be984a13c2ff0a5e
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier strongly indicated maliciousness. While the extracted URLs themselves are currently marked as benign, the sheer volume and structure of the link farm suggest a malicious intent to drive traffic or potentially host further stages of an attack. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9880

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/6098096099095090/Step-Across-This-Line-Collected-Nonfiction-1992-2002-by-Salman-Rushdie.pdf
    • http://loaminoo.linkpc.net/3096093095091/Shame-by-Salman-Rushdie.pdf
    • http://loaminoo.linkpc.net/1090097099095099097/The-Wizard-of-Oz-by-Salman-Rushdie.pdf
    • http://loaminoo.linkpc.net/1090092095099098/Shame-by-Salman-Rushdie.pdf
    • http://loaminoo.linkpc.net/2097092090091098/The-Satanic-Verses-by-Salman-Rushdie.pdf
    • http://loaminoo.linkpc.net/4093099096094094/The-Moor-s-Last-Sigh-by-Salman-Rushdie.pdf
    • http://loaminoo.linkpc.net/1099095097094090/Joseph-Anton-by-Salman-Rushdie.pdf
    • http://loaminoo.linkpc.net/3097090098093095/The-Satanic-Verses-by-Salman-Rushdie.pdf
    • http://loaminoo.linkpc.net/1098096095097091/The-Enchantress-of-Florence-by-Salman-Rushdie.pdf
    • http://loaminoo.linkpc.net/4093090093091/Midnight-s-Children-by-Salman-Rushdie.pdf
    • http://loaminoo.linkpc.net/4092098098090097/The-Satanic-Verses-by-Salman-Rushdie.pdf
    • http://loaminoo.linkpc.net/3093090095095094/Haroun-and-the-Sea-of-Stories-by-Salman-Rushdie.pdf
    • http://loaminoo.linkpc.net/2090096093097092/Luka-and-the-Fire-of-Life-by-Salman-Rushdie.pdf
    • http://loaminoo.linkpc.net/7092093094099/Luka-and-the-Fire-of-Life-by-Salman-Rushdie.pdf
    • http://loaminoo.linkpc.net/8092098092098/The-Ground-Beneath-Her-Feet-by-Salman-Rushdie.pdf
    • http://loaminoo.linkpc.net/1096093094/Two-Years-Eight-Months-and-Twenty-Eight-Nights-by-Salman-Rushdie.pdf
    • http://loaminoo.linkpc.net/2093090098097094/The-Jaguar-Smile-A-Nicaraguan-Journey-by-Salman-Rushdie.pdf
    • http://loaminoo.linkpc.net/7099090091099097/International-Physics-Olympiads---Book-2-1992---2002-by-V-Simeonova.pdf
    • http://loaminoo.linkpc.net/6098096099099091/Erotic-Fantastic-The-Best-of-Circlet-Press-1992-2002-by-Cecilia-Tan.pdf
    • http://loaminoo.linkpc.net/7092097092098096/Cultural-Imperialism-and-the-Indo-English-Novel-Genre-and-Ideology-in-R-K-Narayan-Anita-Desai-Kamala-Markandaya-and-Salman-Rushdie-by-Fawzia-Afzal-Khan.pdf
    • http://loaminoo.linkpc.net/7092093094099/Luka-and-the-Fire-of-Life-by-Salman-Rushdie

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