Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b12f47d63d207db…

MALICIOUS

PDF

13.3 KB Created: 2019-05-01 19:06:04 +01:00 Authoring application: mPDF 5.7
MD5: 1384183232e824749718255b816510c3 SHA-1: bab151f9910ee238a287b6dcd49f704c783def5a SHA-256: 0b12f47d63d207dbfd105a1daadd82f83434e95f6a3d3490e8dcb9b0aabc5656
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified as a link farm. While the URLs themselves are currently classified as benign, the sheer volume and the heuristic firing for 'PDF_SEO_LINK_FARM' suggest a malicious intent, possibly to manipulate search engine results or to serve as a distribution point for further malicious content. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9877

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/4094094096091092/Hunt-Beyond-the-Frozen-Fire-Gabriel-Hunt-4-by-Gabriel-Hunt.pdf
    • http://loaminoo.linkpc.net/4092098090094093/Hunt-at-the-Well-of-Eternity-Gabriel-Hunt-1-by-Gabriel-Hunt.pdf
    • http://loaminoo.linkpc.net/6093097095096092/The-Hunt-Club-Wyatt-Hunt-1-by-John-Lescroart.pdf
    • http://loaminoo.linkpc.net/2092098095093094/Ghost-Hunt-Volume-11-Ghost-Hunt-11-by-Shiho-Inada.pdf
    • http://loaminoo.linkpc.net/3099095093093092/Ghost-Hunt-Vol-9-Ghost-Hunt-9-by-Shiho-Inada.pdf
    • http://loaminoo.linkpc.net/1090094091091/I-Hunt-Killers-I-Hunt-Killers-1-by-Barry-Lyga.pdf
    • http://loaminoo.linkpc.net/2096096099090090/I-Hunt-Killers-I-Hunt-Killers-1-by-Barry-Lyga.pdf
    • http://loaminoo.linkpc.net/4091098092094098/Ghost-Hunt-Vol-1-Ghost-Hunt-1-by-Shiho-Inada.pdf
    • http://loaminoo.linkpc.net/3092099098093/Gabriel-s-Rapture-Gabriel-s-Inferno-2-by-Sylvain-Reynard.pdf
    • http://loaminoo.linkpc.net/1091093094090099098/How-to-Hunt-by-Bowring.pdf
    • http://loaminoo.linkpc.net/1091099093096093097/The-Hunt-by-Jan-Neuharth.pdf
    • http://loaminoo.linkpc.net/2096091098094098/Never-Tomorrow-by-Nan-Hunt.pdf
    • http://loaminoo.linkpc.net/2091095095099096/How-To-Kill-Yourself-by-C-V-Hunt.pdf
    • http://loaminoo.linkpc.net/2094095093094093/Someone-Out-There-by-Catherine-Hunt.pdf
    • http://loaminoo.linkpc.net/2091094092095094/Zombieville-by-C-V-Hunt.pdf
    • http://loaminoo.linkpc.net/1096092096096/The-Last-Hunt-by-Milton-Lott.pdf
    • http://loaminoo.linkpc.net/8096096098097/Ice-Hunt-by-James-Rollins.pdf
    • http://loaminoo.linkpc.net/4099098090094095/The-End-of-the-Hunt-by-Thomas-Flanagan.pdf
    • http://loaminoo.linkpc.net/8090095092098098/The-crocodile-nest-by-Des-Hunt.pdf
    • http://loaminoo.linkpc.net/2099098093093095/13-Days-of-Midnight-by-Leo-Hunt.pdf

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