Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5af95131d3eb3c8…

MALICIOUS

PDF

16.5 KB Created: 2019-05-02 13:01:33 +01:00 Authoring application: mPDF 5.7
MD5: b34adf1c113af5d972aa858370dbd917 SHA-1: 0624f5250eb66c0cd01301c62467545d86ac40e8 SHA-256: a5af95131d3eb3c8524402b6a096a208cd474577b2da9607865c88887bc2bbd4
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, hosted on the dynamic DNS domain loaminoo.linkpc.net. This pattern is indicative of a link farm or SEO poisoning attack, designed to drive traffic or potentially distribute further malicious content. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the immediate payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9898

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/7099098090097094/Delphine-The-Book-of-the-Delmar-2-by-Heidi-Peltier.pdf
    • http://loaminoo.linkpc.net/7099098090097091/Leslie-Peltier-s-guide-to-the-stars-by-Leslie-C-Peltier.pdf
    • http://loaminoo.linkpc.net/2098093098094/About-Mrs-Leslie-by-Vi-a-Delmar.pdf
    • http://loaminoo.linkpc.net/5094098099097093/Book-Analysis-No-and-Me-by-Delphine-de-Vigan-Summary-Analysis-and-Reading-Guide-by-Bright-Summaries.pdf
    • http://loaminoo.linkpc.net/5094098098099090/Based-on-a-True-Story-by-Delphine-de-Vigan-Book-Analysis-Detailed-Summary-Analysis-and-Reading-Guide-BrightSummaries-com-by-Bright-Summaries.pdf
    • http://loaminoo.linkpc.net/9098093097095099/Wiggles-Learns-to-Pay-Attention-Picture-Book-by-Heidi-Butkus.pdf
    • http://loaminoo.linkpc.net/1097094092098090/A-is-for-Abinadi-An-Alphabet-Book-of-Scripture-Heroes-by-Heidi-Poelman.pdf
    • http://loaminoo.linkpc.net/6093098098098093/The-Art-of-John-R-Neill-Patronage-Vintage-Coloring-Book-Volume-1-by-Heidi-Berthiaume.pdf
    • http://loaminoo.linkpc.net/7099098091091091/OptiDesigns-by-Ric-Peltier.pdf
    • http://loaminoo.linkpc.net/7099098092093099/Ice-In-The-Climate-System-by-W-R-Peltier.pdf
    • http://loaminoo.linkpc.net/9095092092098092/Welcome-to-Heidi-by-Heidi-Clements.pdf
    • http://loaminoo.linkpc.net/7099098090090094/The-Trial-of-Leonard-Peltier-by-Jim-Messerschmidt.pdf
    • http://loaminoo.linkpc.net/7099098090097090/Peltier-Goes-To-Hollywood-by-Mark-Vaughan.pdf
    • http://loaminoo.linkpc.net/7099098090099099/Complete-Guide-to-Cism-Certification-by-Peltier.pdf
    • http://loaminoo.linkpc.net/7099098092094091/Orthopedics-A-History-And-Iconography-by-Leonard-F-Peltier.pdf
    • http://loaminoo.linkpc.net/7099098091096090/Information-Security-Fundamentals-by-Thomas-R-Peltier.pdf
    • http://loaminoo.linkpc.net/2098098098093090/No-and-Me-by-Delphine-de-Vigan.pdf
    • http://loaminoo.linkpc.net/7099098092094097/Fractures-A-History-and-Iconography-of-Their-Treatment-by-Leonard-F-Peltier.pdf
    • http://loaminoo.linkpc.net/7099098090097093/Information-Security-Risk-Analysis-by-Thomas-R-Peltier.pdf
    • http://loaminoo.linkpc.net/7099098092095093/Paris-Pendant-l-Ann-e-Par-M-Peltier-of-23-Volume-2-by-Multiple-Contributors.pdf
    • http://loaminoo.linkpc.net/6093098098098093/The-Art-of-John-R-Neill-Patro

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