Malicious PDF — malware analysis report

Static analysis result for SHA-256 055f4eb3b7ea19a6…

MALICIOUS

PDF

15.6 KB Created: 2019-05-02 05:03:09 +01:00 Authoring application: mPDF 5.7
MD5: f08a02fff872a7e917f1d29f13d4a973 SHA-1: 6b2f45f428e6a488d9f293d7ebb7b43f546763a3 SHA-256: 055f4eb3b7ea19a6998fc5eb32444a4f1b9e8fd5fd044bf2b2cd5474c61c0932
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, forming a link farm. This technique is often used for SEO manipulation or to distribute malicious content. While the extracted URLs themselves are currently flagged as benign, the sheer volume and the heuristic firing of 'PDF_SEO_LINK_FARM' indicate a suspicious pattern. The ML classifier also flagged the PDF as malicious.

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://cefasfese.4pu.com/3738732731731739/Ghost-in-the-House-by-Ammi-Joan-Paquette.pdf
    • http://cefasfese.4pu.com/5731736736739/Ghost-House-The-Ghost-House-Saga-1-by-Alexandra-Adornetto.pdf
    • http://cefasfese.4pu.com/3739730739733732/What-Does-Joan-Say-My-Seven-Years-as-White-House-Astrologer-to-Nancy-and-Ronald-Reagan-by-Joan-Quigley.pdf
    • http://cefasfese.4pu.com/8730735739738/Ghost-Town-Seven-Ghostly-Stories-by-Joan-Lowery-Nixon.pdf
    • http://cefasfese.4pu.com/2737734735731734/The-Ghost-House-by-Jane-Blackthorn.pdf
    • http://cefasfese.4pu.com/2731730739737733/Ghost-House-by-Hannah-Faith-Notess.pdf
    • http://cefasfese.4pu.com/2732730732730733/Ghost-House-Book-One-by-Dani-R-R-Hermit.pdf
    • http://cefasfese.4pu.com/8735736732731/The-Haunted-Dolls-House-and-Other-Ghost-Stories-by-M-R-James.pdf
    • http://cefasfese.4pu.com/5732736733733733/The-Ghost-House-Annie-Graham-1-by-Helen-Phifer.pdf
    • http://cefasfese.4pu.com/1739734734738738/The-Ghost-of-Marlow-House-Haunting-Danielle-1-by-Bobbi-Holmes.pdf
    • http://cefasfese.4pu.com/2732736736737733/The-Ghost-at-Dawn-s-House-The-Baby-Sitters-Club-9-by-Ann-M-Martin.pdf
    • http://cefasfese.4pu.com/2734734731730738/Rules-for-Ghosting-by-A-J-Paquette.pdf
    • http://cefasfese.4pu.com/5736733739738736/Le-petit-gar-on-qui-parlait-avec-les-mouches-by-Karine-Paquette.pdf
    • http://cefasfese.4pu.com/8731738731734734/Paroisse-Saint-Barthelemy-1828-1992-by-Lucille-Paquette.pdf
    • http://cefasfese.4pu.com/1731738732730732735/Izzy-Spector---Ghost-Detector-The-Ghost-Dog-of-Hill-Road-by-Robert-Spielman.pdf
    • http://cefasfese.4pu.com/3737735730737732/Ghost-a-la-Mode-A-Ghost-of-Granny-Apples-Mystery-1-by-Sue-Ann-Jaffarian.pdf
    • http://cefasfese.4pu.com/3736730737737738/Ghost-of-a-Threat-Betty-Boo-Ghost-Hunter-1-by-Beth-Dolgner.pdf
    • http://cefasfese.4pu.com/3731736739732/The-Ghost-Drum-Ghost-World-1-by-Susan-Price.pdf
    • http://cefasfese.4pu.com/3735733737736737/Giving-Up-the-Ghost-Laying-a-Ghost-2-by-Jane-Davitt.pdf
    • http://cefasfese.4pu.com/2734730730737736/Ghost-in-the-Cowl-Ghost-Exile-1-by-Jonathan-Moeller.pdf

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