Malicious PDF — malware analysis report

Static analysis result for SHA-256 50aeca8ac7129187…

MALICIOUS

PDF

16.8 KB Created: 2019-05-02 10:30:23 +01:00 Authoring application: mPDF 5.7
MD5: d369af9450740926d5996781e9d68b3b SHA-1: b9da2534a228ddb215840aef47902e07cefa9a6e SHA-256: 50aeca8ac712918702314e15bdc279d5915622f34e994d6acd57684786cc7953
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, to external PDF documents. While the URLs themselves are marked as benign, the sheer volume and structure suggest a malicious intent, possibly for SEO manipulation or to distribute further malicious content. The ML classifier also strongly indicated maliciousness. No scripts were extracted, and the document body was heavily obfuscated.

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/3096090098094095/Midnight-Promises-Men-of-Midnight-2-by-Lisa-Marie-Rice.pdf
    • http://loaminoo.linkpc.net/3096091091098099/Midnight-Vengeance-Men-of-Midnight-1-by-Lisa-Marie-Rice.pdf
    • http://loaminoo.linkpc.net/2091092090097094/Midnight-Man-Midnight-1-by-Lisa-Marie-Rice.pdf
    • http://loaminoo.linkpc.net/4097093090091/Midnight-Man-Midnight-1-by-Lisa-Marie-Rice.pdf
    • http://loaminoo.linkpc.net/4094094091097099/The-Dark-Warrior-Series-The-Complete-Collection-Contains-Midnight-s-Master-Midnight-s-Lover-Midnight-s-Seduction-Midnight-s-Warrior-Midnight-s-Kiss-Surrender-novella-Dark-Warriors-by-Donna-Grant.pdf
    • http://loaminoo.linkpc.net/2094098099093093/Tempted-by-Midnight-Midnight-Breed-12-5-1001-Dark-Nights-9-by-Lara-Adrian.pdf
    • http://loaminoo.linkpc.net/3091097098099097/Cat-in-a-Midnight-Choir-Midnight-Louie-14-by-Carole-Nelson-Douglas.pdf
    • http://loaminoo.linkpc.net/4095096098098092/Either-Side-of-Midnight-The-Midnight-Saga-Book-1-by-Tori-de-Clare.pdf
    • http://loaminoo.linkpc.net/3093097097094/Midnight-Awakening-Midnight-Breed-3-by-Lara-Adrian.pdf
    • http://loaminoo.linkpc.net/3099090092093094/Deeper-Than-Midnight-Midnight-Breed-9-by-Lara-Adrian.pdf
    • http://loaminoo.linkpc.net/3095097094093097/Midnight-Rising-Midnight-Breed-4-by-Lara-Adrian.pdf
    • http://loaminoo.linkpc.net/3094095098099/Ashes-of-Midnight-Midnight-Breed-6-by-Lara-Adrian.pdf
    • http://loaminoo.linkpc.net/3097096093095097/A-Touch-of-Midnight-Midnight-Breed-0-5-by-Lara-Adrian.pdf
    • http://loaminoo.linkpc.net/3093099096090090/Darker-After-Midnight-Midnight-Breed-10-by-Lara-Adrian.pdf
    • http://loaminoo.linkpc.net/4090096091099096/Shades-of-Midnight-Midnight-Breed-7-by-Lara-Adrian.pdf
    • http://loaminoo.linkpc.net/1097092094092093/Midnight-Awakening-Midnight-Breed-3-by-Lara-Adrian.pdf
    • http://loaminoo.linkpc.net/2099094096099095/Secrets-of-Midnight-Chronicles-of-Midnight-3-by-Debbie-Cassidy.pdf
    • http://loaminoo.linkpc.net/1093093096090099/A-Touch-of-Midnight-Midnight-Breed-0-5-by-Lara-Adrian.pdf
    • http://loaminoo.linkpc.net/1096097099099093/Midnight-Kiss-Touched-by-Midnight-1-by-Nancy-Gideon.pdf
    • http://loaminoo.linkpc.net/4090099095091094/Midnight-Awakening-Midnight-Breed-3-by-Lara-Adrian.pdf
    • http://loaminoo.linkpc.net/2

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