Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e33f7e435795ac3…

MALICIOUS

PDF

15.4 KB Created: 2019-04-30 05:49:49 +01:00 Authoring application: mPDF 5.7
MD5: baed5dadb1e2ba0c656c46d42e32a5fc SHA-1: a70057c942e61f01525ec1a93418e168fb939f26 SHA-256: 2e33f7e435795ac351747bc551efc55c693e1fc9d08fea99a51280d5f9ff41dd
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to distribute malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, and the document body was heavily obfuscated, preventing a more detailed analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9880

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/3094091097094/The-Emperor-of-Nihon-Ja-Ranger-s-Apprentice-10-by-John-Flanagan.pdf
    • http://loaminoo.linkpc.net/1093094099096096/Ranger-s-Apprentice-7-volume-Set-Ranger-s-Apprentice-1-7-by-John-Flanagan.pdf
    • http://loaminoo.linkpc.net/4091091090091095/The-Siege-of-Macindaw-Ranger-s-Apprentice-6-by-John-Flanagan.pdf
    • http://loaminoo.linkpc.net/3092097097091/The-Ruins-of-Gorlan-Ranger-s-Apprentice-1-by-John-Flanagan.pdf
    • http://loaminoo.linkpc.net/3097090094098/The-Lost-Stories-Ranger-s-Apprentice-11-by-John-Flanagan.pdf
    • http://loaminoo.linkpc.net/2091093096098099/The-Ruins-of-Gorlan-Ranger-s-Apprentice-1-by-John-Flanagan.pdf
    • http://loaminoo.linkpc.net/7095093095096/The-Sorcerer-of-the-North-Ranger-s-Apprentice-5-by-John-Flanagan.pdf
    • http://loaminoo.linkpc.net/3094094096090/Halt-s-Peril-Ranger-s-Apprentice-9-by-John-Flanagan.pdf
    • http://loaminoo.linkpc.net/3093099099091/The-Siege-of-Macindaw-Ranger-s-Apprentice-6-by-John-Flanagan.pdf
    • http://loaminoo.linkpc.net/6093090097091/The-Ruins-of-Gorlan-Ranger-s-Apprentice-1-by-John-Flanagan.pdf
    • http://loaminoo.linkpc.net/3093099098090/Erak-s-Ransom-Ranger-s-Apprentice-7-by-John-Flanagan.pdf
    • http://loaminoo.linkpc.net/2097092090092096/The-Icebound-Land-Ranger-s-Apprentice-3-by-John-Flanagan.pdf
    • http://loaminoo.linkpc.net/1098091090094095/Halt-s-Peril-Ranger-s-Apprentice-9-by-John-Flanagan.pdf
    • http://loaminoo.linkpc.net/2097092097092094/The-Burning-Bridge-Ranger-s-Apprentice-2-by-John-Flanagan.pdf
    • http://loaminoo.linkpc.net/6094095096090/The-Battle-for-Skandia-Rangers-Apprentice-4-by-John-Flanagan.pdf
    • http://loaminoo.linkpc.net/9093090098097094/Die-Belagerung-by-John-Flanagan.pdf
    • http://loaminoo.linkpc.net/4093096093095092/Park-Ranger-Sequel-More-True-Stories-From-a-Ranger-s-Career-in-America-s-National-Parks-by-Nancy-Eileen-Muleady-Mecham.pdf
    • http://loaminoo.linkpc.net/3097096094098/The-Invaders-Brotherband-Chronicles-2-by-John-Flanagan.pdf
    • http://loaminoo.linkpc.net/3098097099091093/The-Caldera-Brotherband-Chronicles-7-by-John-Flanagan.pdf
    • http://loaminoo.linkpc.net/3095094095/The-Ghostfaces-Brotherband-Chronicles-6-by-John-Flanagan.pdf
    • http://loaminoo.linkpc.net/2097092090092096/The-Ice

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