Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e1559f04d9d5544…

MALICIOUS

PDF

16.6 KB Created: 2019-04-30 18:59:44 +01:00 Authoring application: mPDF 5.7
MD5: f2838611c3fbbd3c6989f87b4294c5e0 SHA-1: e2478275be63cfe1a629310cbf27b3fcb3d3e121 SHA-256: 9e1559f04d9d554475eae4e8c20abc34ed60b01f73fcfa727a925a96eaf35676
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to a domain that hosts numerous PDF files, indicative of a link farm. This is strongly suggested by the 'PDF_SEO_LINK_FARM' heuristic. The ML classifier also flagged the document as malicious. While no scripts were extracted, the structure and embedded URLs suggest an attempt to manipulate search engine results or distribute additional payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9913

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/1099098098090/Mask-For-A-Diva-Stan-Kraychik-Mystery-4-by-Grant-Michaels.pdf
    • http://loaminoo.linkpc.net/2090090092093/A-Body-to-Dye-For-Stan-Kraychik-Mystery-1-by-Grant-Michaels.pdf
    • http://loaminoo.linkpc.net/1099099090098/Love-You-to-Death-Stan-Kraychik-Mystery-2-by-Grant-Michaels.pdf
    • http://loaminoo.linkpc.net/1099097097093/Time-to-Check-Out-Stan-Kraychik-Mystery-5-by-Grant-Michaels.pdf
    • http://loaminoo.linkpc.net/3092093099090099/The-Diva-Frosts-a-Cupcake-A-Domestic-Diva-Mystery-7-by-Krista-Davis.pdf
    • http://loaminoo.linkpc.net/3091094095092/The-Diva-Digs-Up-the-Dirt-A-Domestic-Diva-Mystery-6-by-Krista-Davis.pdf
    • http://loaminoo.linkpc.net/1091094096096099097/The-Diva-Cooks-up-a-Storm-A-Domestic-Diva-Mystery-11-by-Krista-Davis.pdf
    • http://loaminoo.linkpc.net/3091095095099097/The-Diva-Cooks-a-Goose-A-Domestic-Diva-Mystery-4-by-Krista-Davis.pdf
    • http://loaminoo.linkpc.net/2097092091095094/The-Diva-Wraps-It-Up-A-Domestic-Diva-Mystery-8-by-Krista-Davis.pdf
    • http://loaminoo.linkpc.net/2095099092093099/Talking-To-My-Country-by-Stan-Grant.pdf
    • http://loaminoo.linkpc.net/1090095099096096094/Journey-Into-Mystery-86-by-Stan-Lee.pdf
    • http://loaminoo.linkpc.net/1095097098092098/Death-Wears-a-Mask-Amory-Ames-Mystery-2-by-Ashley-Weaver.pdf
    • http://loaminoo.linkpc.net/2093092099093099/The-Lost-Mask-The-Bone-Mask-Trilogy-2-by-Ashley-Capes.pdf
    • http://loaminoo.linkpc.net/2092092093098098/U-S-Grant-The-Civil-War-Years-Grant-Moves-South-and-Grant-Takes-Command-by-Bruce-Catton.pdf
    • http://loaminoo.linkpc.net/1090099096099097099/Stan-Without-Ollie-The-Stan-Laurel-Solo-Films-1917-1927-by-Ted-Okuda.pdf
    • http://loaminoo.linkpc.net/1091094096099096098/When-Crazy-s-Coming-The-Midlife-Misadventures-of-a-Midlife-Diva-Midlife-Diva-1-by-Trumillia-Lunnie-Thomas.pdf
    • http://loaminoo.linkpc.net/3097093096094095/High-Heels-and-Holidays-Maggie-Kelly-Mystery-5-by-Kasey-Michaels.pdf
    • http://loaminoo.linkpc.net/4097098094095095/Excelsior-The-Amazing-Life-of-Stan-Lee-by-Stan-Lee.pdf
    • http://loaminoo.linkpc.net/1091090092096099095/Red-Skelton-The-Mask-Behind-the-Mask-by-Wes-D-Gehring.pdf
    • http://loaminoo.linkpc.net/6094096095/Mask-of-Shadows-Mask-of-Shadows-1-by-Linsey-Miller.pdf

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