Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffbdbd59a11e9557…

MALICIOUS

PDF

12.8 KB Created: 2019-05-02 02:42:39 +01:00 Authoring application: mPDF 5.7
MD5: 0ebd749d919be7595a46874f6e14587b SHA-1: ab26a68e77e61b78146ea5f03c8bce937dad0993 SHA-256: ffbdbd59a11e955704d7319fdc61e2ddd61697daa8aaace6226cc129dbe9e1ff
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic. These links all point to the same domain, loaminoo.linkpc.net, and appear to be designed to drive traffic to various book titles. While the individual links are marked as benign, the sheer volume and the nature of the link farm suggest a malicious intent, likely to manipulate search engine rankings or to serve as a distribution point for further malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9006

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/1090097096098096/The-Day-We-Met-by-Dusti-Bowling.pdf
    • http://loaminoo.linkpc.net/9093092097097/Tourist-Trap-by-Sue-Ann-Bowling.pdf
    • http://loaminoo.linkpc.net/4095092090090093/Pack-of-Lies-by-Kimila-Bowling.pdf
    • http://loaminoo.linkpc.net/5099090093094/Bowling-Alley-Bandit-by-Laurie-Keller.pdf
    • http://loaminoo.linkpc.net/1096097096096099/Willard-and-His-Bowling-Trophies-by-Richard-Brautigan.pdf
    • http://loaminoo.linkpc.net/1091091091093095091/Bowling-Across-America-50-States-in-Rented-Shoes-by-Mike-Walsh.pdf
    • http://loaminoo.linkpc.net/3092093095094098/Down-Milldyke-Way-A-touching-saga-of-heartbreak-grit-and-emotion-by-Harry-Bowling.pdf
    • http://loaminoo.linkpc.net/1091098093090096/The-Lost-Coast-Salmon-Memory-and-the-Death-of-Wild-Culture-by-Tim-Bowling.pdf
    • http://loaminoo.linkpc.net/2093090094094/Different-Hours-by-Stephen-Dunn.pdf
    • http://loaminoo.linkpc.net/5094094090092/36-Hours-by-Allison-Brennan.pdf
    • http://loaminoo.linkpc.net/2091096097098/Men-in-the-Off-Hours-by-Anne-Carson.pdf
    • http://loaminoo.linkpc.net/4093092097093090/24-Hours-by-Claire-Seeber.pdf
    • http://loaminoo.linkpc.net/6096099095091092/In-the-Wee-Small-Hours-by-Gil-McNeil.pdf
    • http://loaminoo.linkpc.net/2091097091096/The-Hours-by-Michael-Cunningham.pdf
    • http://loaminoo.linkpc.net/1091098097098098095/After-Hours-by-Jacka-Bahn.pdf
    • http://loaminoo.linkpc.net/3096093098096095/Twenty-Four-Hours-a-Day-by-Anonymous.pdf
    • http://loaminoo.linkpc.net/1091096099092093/Ink-The-Book-of-All-Hours-2-by-Hal-Duncan.pdf
    • http://loaminoo.linkpc.net/1094096094094092/After-Hours-by-Cara-McKenna.pdf
    • http://loaminoo.linkpc.net/3091093098091098/Vellum-The-Book-of-All-Hours-1-by-Hal-Duncan.pdf
    • http://loaminoo.linkpc.net/5093098090093092/Morning-Hours-in-Patmos-by-A-C-Thompson.pdf
    • http://loaminoo.linkpc.net/40930920970930

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