Malicious PDF — malware analysis report

Static analysis result for SHA-256 03aa0fab0c8ef2e4…

MALICIOUS

PDF

16.4 KB Created: 2019-04-30 03:55:59 +01:00 Authoring application: mPDF 5.7
MD5: db400a1f83a40c73fe9a88a29eb60753 SHA-1: 5711cb5c67b886a9cbf4cb8adb78a8a70a0fe326 SHA-256: 03aa0fab0c8ef2e47fda34f755adbafb767316119b9def8837aaf76580345640
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, identified as a link farm, pointing to external PDF files. While the URLs themselves are currently marked as benign, the sheer volume and structure suggest a tactic to artificially inflate search engine rankings or distribute spam content. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9898

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/2091092099096093/A-Seduction-at-Christmas-Scandals-and-Seductions-1-by-Cathy-Maxwell.pdf
    • http://loaminoo.linkpc.net/4090099094092099/The-Seduction-of-Scandal-Scandals-and-Seductions-5-by-Cathy-Maxwell.pdf
    • http://loaminoo.linkpc.net/2092098097097097/The-Seduction-of-an-English-Lady-by-Cathy-Maxwell.pdf
    • http://loaminoo.linkpc.net/3095096099095096/Tea-for-Two-by-Cathy-Maxwell.pdf
    • http://loaminoo.linkpc.net/3098093094099096/Married-in-Haste-Marriage-1-by-Cathy-Maxwell.pdf
    • http://loaminoo.linkpc.net/3095092093090093/The-Groom-Says-Yes-The-Brides-of-Wishmore-3-by-Cathy-Maxwell.pdf
    • http://loaminoo.linkpc.net/3099095098097090/The-Bride-Says-No-The-Brides-of-Wishmore-1-by-Cathy-Maxwell.pdf
    • http://loaminoo.linkpc.net/2099091093097097/Lyon-s-Bride-The-Chattan-Curse-1-by-Cathy-Maxwell.pdf
    • http://loaminoo.linkpc.net/3090093090091099/Temptation-of-a-Proper-Governess-Cameron-Sisters-1-by-Cathy-Maxwell.pdf
    • http://loaminoo.linkpc.net/2090093094092/Ravensdale-s-Defiant-Captive-Christmas-at-the-Chatsfield-Ravensdale-Scandals-1-by-Melanie-Milburne.pdf
    • http://loaminoo.linkpc.net/8098095097098099/White-Christmas-Wickham-Hall-4-by-Cathy-Bramley.pdf
    • http://loaminoo.linkpc.net/1091095092090098098/Maxwell-The-Rise-and-Fall-of-Robert-Maxwell-and-His-Empire-by-Roy-Greenslade.pdf
    • http://loaminoo.linkpc.net/7093099098095/The-Maxwell-Leadership-Bible-by-John-C-Maxwell.pdf
    • http://loaminoo.linkpc.net/3097094092098099/His-Christmas-Sweetheart-Sweetheart-Nevada-2-by-Cathy-McDavid.pdf
    • http://loaminoo.linkpc.net/4090097097091/Cathy-s-Book-Cathy-Vickers-Trilogy-1-by-Sean-Stewart.pdf
    • http://loaminoo.linkpc.net/1096095097092092/Cathy-s-Key-Cathy-Vickers-Trilogy-2-by-Sean-Stewart.pdf
    • http://loaminoo.linkpc.net/3097093092091095/Christmas-Proposals-Her-Christmas-Romeo-The-Tycoon-s-Christmas-Engagement-A-Bride-for-Christmas-by-Carole-Mortimer.pdf
    • http://loaminoo.linkpc.net/5095096099099099/Seduction-of-Taste-Seduction-3-by-Emma-Calin.pdf
    • http://loaminoo.linkpc.net/5095096099098098/Seduction-of-Combat-Seduction-1-by-Emma-Calin.pdf
    • http://loaminoo.linkpc.net/2095092090091090/Song-of-Seduction-Seduction-1-by-Carrie-Lofty.pdf

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