Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fb0389706963fed…

MALICIOUS

PDF

15.3 KB Created: 2019-05-03 05:11:13 +01:00 Authoring application: mPDF 5.7
MD5: c2baf97f0b935cb5cbe6828b9cc68560 SHA-1: 1f70fcda26ac81fa2a31725ef37f9a45a034579b SHA-256: 7fb0389706963fed380fb1fbda8bf1ce2bc45a10c0e9b643c6956b2c9b861a9f
90 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic. While most of these URLs are currently classified as benign, the sheer volume and the nature of the heuristic suggest a malicious intent, possibly for SEO spam or to host further malicious content. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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://xiixmcuin
    • http://xiixmcuin.linkpc.net/4201208203202205/Storm-Riders-by-Karen-Michelle-Nutt.pdf
    • http://xiixmcuin.linkpc.net/3202202208207204/At-the-Stroke-of-Midnight-by-Karen-Michelle-Nutt.pdf
    • http://xiixmcuin.linkpc.net/3202201204208209/Lost-In-The-Mist-Of-Time-by-Karen-Michelle-Nutt.pdf
    • http://xiixmcuin.linkpc.net/2202209209205207/The-World-A-Twist-of-Fate-by-Karen-Michelle-Nutt.pdf
    • http://xiixmcuin.linkpc.net/4201203209202207/A-Halloween-Collection-Anthology-Stimulating-by-Karen-Michelle-Nutt.pdf
    • http://xiixmcuin.linkpc.net/2209200209207207/Sex-amp-Magic-Chosen-by-Michelle-Clay.pdf
    • http://xiixmcuin.linkpc.net/2203204205207209/That-Old-Black-Magic-Living-In-Eden-3-by-Michelle-Rowen.pdf
    • http://xiixmcuin.linkpc.net/3206206207204200/Soul-Magic-by-Karen-Whiddon.pdf
    • http://xiixmcuin.linkpc.net/3208209205201208/Secrets-of-the-Magic-Ring-by-Karen-McQuestion.pdf
    • http://xiixmcuin.linkpc.net/3208200202201202/The-Shaman-s-Secret-Kalika-Magic-2-by-Karen-Hughes.pdf
    • http://xiixmcuin.linkpc.net/1205208204201206/The-Magic-Goes-Away-Collection-The-Magic-Goes-Away-The-Magic-May-Return-More-Magic-by-Larry-Niven.pdf
    • http://xiixmcuin.linkpc.net/2205205208205204/Harnessing-Air-Magic-A-Witch-s-Guide-to-Elemental-Magic-Elemental-Witchcraft-and-Magic-Book-1-by-Viivi-James.pdf
    • http://xiixmcuin.linkpc.net/1200207202200206204/Drugs-Without-the-Hot-Air-Minimizing-the-Harms-of-Legal-and-Illegal-Drugs-by-David-J-Nutt.pdf
    • http://xiixmcuin.linkpc.net/6203209205204/The-Loch-by-Steve-Alten.pdf
    • http://xiixmcuin.linkpc.net/1200206206203204209/The-Loch-by-Robert-Forrester.pdf
    • http://xiixmcuin.linkpc.net/1200206206201207208/The-Loch-by-Janet-Caird.pdf
    • http://xiixmcuin.linkpc.net/4202201204200/Loch-by-Paul-Zindel.pdf
    • http://xiixmcuin.linkpc.net/1200206206204200205/Sworn-to-Love-by-Kathryn-Loch.pdf
    • http://xiixmcuin.linkpc.net/4203208204204203/Swan-Loch-by-Randy-Mixter.pdf
    • http://xiixmcuin.linkpc.net/1200206206202209201/Loch-Ness-by-Donovan-Galway.pdf

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