Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d366edbd0bd7799…

MALICIOUS

PDF

15.1 KB Created: 2019-05-02 18:08:04 +01:00 Authoring application: mPDF 5.7
MD5: 287ccf67740b0fd75d15a5b2fd4065e6 SHA-1: 5a44fe11dacdef7b10c461a835bffb6be2cae221 SHA-256: 9d366edbd0bd7799a23cbbfc48993d31caed318d43a5af2a8f70ca2b300bbf7d
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. While the ML classifier also flagged the PDF as malicious, the specific intent beyond link distribution is unclear as no scripts were extracted. The majority of the extracted URLs, despite being numerous, are marked as confirmed benign, suggesting the primary malicious function is not direct download of malware from these specific links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9891

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/8094093097090/Living-Green-A-Turtle-s-Quest-for-a-Cleaner-Planet-by-Artie-Knapp.pdf
    • http://loaminoo.linkpc.net/4091092097091095/Jack-Strong-Takes-a-Stand-A-Charlie-Joe-Jackson-Spinoff-by-Tommy-Greenwald.pdf
    • http://loaminoo.linkpc.net/1090099096099097099/Stan-Without-Ollie-The-Stan-Laurel-Solo-Films-1917-1927-by-Ted-Okuda.pdf
    • http://loaminoo.linkpc.net/1098094094092099/The-Mystery-of-the-Stuttering-Parrot-Alfred-Hitchcock-and-The-Three-Investigators-2-by-Robert-Arthur.pdf
    • http://loaminoo.linkpc.net/4097098094095095/Excelsior-The-Amazing-Life-of-Stan-Lee-by-Stan-Lee.pdf
    • http://loaminoo.linkpc.net/2094097093094098/Stand-Out-Devil-Seed-The-Stand-Trilogy-2-by-Kay-Reno.pdf
    • http://loaminoo.linkpc.net/9090099093094093/Stand-By-Stand-by-Geordie-Sharp-1-by-Chris-Ryan.pdf
    • http://loaminoo.linkpc.net/6099093095095095/The-Pied-Piper-of-Woodstock-by-Artie-Kornfeld.pdf
    • http://loaminoo.linkpc.net/3094099091093098/Music-to-My-Years-Life-and-Love-Between-the-Notes-by-Artie-Kane.pdf
    • http://loaminoo.linkpc.net/5094099092098/It-Takes-A-Village-Five-It-Takes-A-Village-Series-Book-1-by-Marley-Claire.pdf
    • http://loaminoo.linkpc.net/3094096099099095/It-Takes-a-Thief-to-Catch-a-Sunrise-It-Takes-a-Thief-1-by-Rob-J-Hayes.pdf
    • http://loaminoo.linkpc.net/1091095095099096090/Get-Out-of-There-Cat-by-Kristina-Knapp.pdf
    • http://loaminoo.linkpc.net/1091095095099096095/The-Best-of-Jennifer-Knapp-by-Jennifer-Knapp.pdf
    • http://loaminoo.linkpc.net/1098093098092090/Stealing-the-Marbles-by-E-J-Knapp.pdf
    • http://loaminoo.linkpc.net/7095092097094097/That-Was-Yvette-by-Bettina-L-Knapp.pdf
    • http://loaminoo.linkpc.net/4092097093098099/Hook-amp-Crown-by-Nicole-Knapp.pdf
    • http://loaminoo.linkpc.net/1091095095098094095/Ruby-Red-Shoes-by-Kate-Knapp.pdf
    • http://loaminoo.linkpc.net/6096099097094096/Jean-Genet-by-Bettina-L-Knapp.pdf
    • http://loaminoo.linkpc.net/2097090094093092/The-Gold-Mine-by-Deane-Knapp.pdf
    • http://loaminoo.linkpc.net/1091095095098090091/Element-Zero-Revivors-3-by-James-Knapp.pdf
    • http://loaminoo.linkpc.net/5094099092098/It-Takes-A-Village-Five-It-Takes-A-Village-Series-Book-1

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