Malicious PDF — malware analysis report

Static analysis result for SHA-256 9977f9acf54f5e6b…

MALICIOUS

PDF

13.2 KB Created: 2019-05-03 05:12:29 +01:00 Authoring application: mPDF 5.7
MD5: 25b2d583aa274553cc3067979af7d200 SHA-1: e3f14c9f43fb14c97f1e1744a015b172dc8d37e2 SHA-256: 9977f9acf54f5e6b2d9a12a7ed7fe0ac3e6179347932f61d57534856638caf3f
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. While the specific URLs extracted are currently marked as benign, the sheer volume and structure suggest a malicious intent, likely for SEO poisoning or to redirect users to malicious sites. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9831

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/1092095090094097/Asher-s-Fault-The-Asher-Trilogy-1-by-Elizabeth-Wheeler.pdf
    • http://loaminoo.linkpc.net/1091094097091095092/Asher-And-The-Elevator-Romp-Asher-1-by-Zoe-Nichols.pdf
    • http://loaminoo.linkpc.net/1096097093090090/Too-Many-Frogs-by-Sandy-Asher.pdf
    • http://loaminoo.linkpc.net/1098094099090096/Until-Avery-by-Brynne-Asher.pdf
    • http://loaminoo.linkpc.net/3097094095099095/PRUSSIAN-HEART-by-Sam-Asher.pdf
    • http://loaminoo.linkpc.net/1091094096099092099/Asher-by-Kylie-Walker.pdf
    • http://loaminoo.linkpc.net/8095096096090094/The-Shoah-And-The-War-by-Asher-Cohen.pdf
    • http://loaminoo.linkpc.net/1095094091096096/My-Name-Is-Asher-Lev-by-Chaim-Potok.pdf
    • http://loaminoo.linkpc.net/3098093096092097/The-Question-by-Jane-Asher.pdf
    • http://loaminoo.linkpc.net/4094098090090090/My-Name-Is-Asher-Lev-by-Chaim-Potok.pdf
    • http://loaminoo.linkpc.net/1091094097092092095/Asher-Wife-by-A-R-Wise.pdf
    • http://loaminoo.linkpc.net/1091092092090094/Thirteen-Reasons-Why-by-Jay-Asher.pdf
    • http://loaminoo.linkpc.net/8096091091096/The-Gift-of-Asher-Lev-by-Chaim-Potok.pdf
    • http://loaminoo.linkpc.net/3091091092/Sweetest-Venom-Virtue-2-by-Mia-Asher.pdf
    • http://loaminoo.linkpc.net/4092094097099098/War-Factory-Transformation-2-by-Neal-Asher.pdf
    • http://loaminoo.linkpc.net/3099092096090098/The-Incredible-Edible-Toe-by-Asher-Jones.pdf
    • http://loaminoo.linkpc.net/1096096094093097/Forever-Burning-Eternals-3-by-Evi-Asher.pdf
    • http://loaminoo.linkpc.net/4090099098091/The-Skinner-Spatterjay-1-by-Neal-Asher.pdf
    • http://loaminoo.linkpc.net/8094097099090098/The-Dogs-of-Mexico-by-John-J-Asher.pdf
    • http://loaminoo.linkpc.net/1094094096090090/Overflow-Carpino-1-by-Brynne-Asher.pdf
    • http://loaminoo.linkpc.net/109109

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