Malicious PDF — malware analysis report

Static analysis result for SHA-256 26829034e2c2633e…

MALICIOUS

PDF

15.6 KB Created: 2020-03-18 21:03:09 +00:00 Authoring application: mPDF 5.7
MD5: be53fa333bac5bf5dfd29fcb946d5434 SHA-1: 486714116a4d412f34cec79c14a9edb4b18d2bc3 SHA-256: 26829034e2c2633ef71844c61871237e244175df315a82c0f5dc946479143047
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to external PDF documents, a technique often used for SEO poisoning or to distribute malicious content. The ML classifier strongly indicated maliciousness. The dominant host for these links is calistazz.myhome.cx, which is highly suspicious. No scripts were extracted, but the sheer volume of suspicious links suggests a delivery mechanism for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9778

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://calistazz.myhome.cx/5861860864865866/Once-Were-Mountains-by-Victoria-Richards.pdf
    • http://calistazz.myhome.cx/1860864860861860869/A-Thankful-Love-Richards-Family-1-by-K-Victoria-Chase.pdf
    • http://calistazz.myhome.cx/4866868864869862/Young-Merlin-A-Dragon-s-tale-Book-1-by-Victoria-Richards.pdf
    • http://calistazz.myhome.cx/2866865863860864/Voodoo-Love-and-the-Curse-of-Jean-Lafitte-s-Treasure-Episode-1-by-Victoria-Richards.pdf
    • http://calistazz.myhome.cx/7866866865861/Breaking-the-Line-Victoria-s-Beginning-Victoria-s-Journey-1-by-A-39-Mera-Frieman.pdf
    • http://calistazz.myhome.cx/9865860865865869/Victoria-Texas-Including-Its-History-de-Leon-Plaza-the-Victoria-County-Courthouse-Fossati-s-Delicatessen-and-More-by-Johnathan-Black.pdf
    • http://calistazz.myhome.cx/1867869864869869/Mountains-of-the-Moon-by-I-J-Kay.pdf
    • http://calistazz.myhome.cx/4864861861861864/The-Taebek-Mountains-by-Jo-Jung-rae.pdf
    • http://calistazz.myhome.cx/5864861865864/In-the-Shadow-of-the-Mountains-by-M-R-Graham.pdf
    • http://calistazz.myhome.cx/9865866863865869/Between-Mountains-by-Maggie-Helwig.pdf
    • http://calistazz.myhome.cx/1863864868868863/In-the-Mist-of-the-Mountains-by-Ethel-Turner.pdf
    • http://calistazz.myhome.cx/3862868865862861/Lord-of-Mountains-Emberverse-9-by-S-M-Stirling.pdf
    • http://calistazz.myhome.cx/3861861864865860/Land-Of-Mountains-by-Jinx-Schwartz.pdf
    • http://calistazz.myhome.cx/6860861864860/And-the-Mountains-Echoed-by-Khaled-Hosseini.pdf
    • http://calistazz.myhome.cx/4861860861867865/Ghosts-of-the-Mountains-by-Mark-Bowlin.pdf
    • http://calistazz.myhome.cx/1868862865863860/Climbing-Mountains-by-Osman-Gulum.pdf
    • http://calistazz.myhome.cx/3869863865863863/The-Mountains-of-California-by-John-Muir.pdf
    • http://calistazz.myhome.cx/6861862867867/And-the-Mountains-Echoed-by-Khaled-Hosseini.pdf
    • http://calistazz.myhome.cx/4868865866868864/Love-of-Mountains-Two-Stories-by-Uno-K-ji.pdf
    • http://calistazz.myhome.cx/2865863863867861/At-the-Mountains-of-Madness-A-Graphic-Novel-by-I-N-J-Culbard.pdf
    • http://calistazz.myhome.cx/9865866863865869/Between-Mountains-by-Maggie-H

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