Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6935cdaa94a4da8…

MALICIOUS

PDF

13.9 KB Created: 2019-04-30 03:48:37 +01:00 Authoring application: mPDF 5.7
MD5: 201f8fdfca5283e3fcd566ff19a2a832 SHA-1: 5dfb60b9701a61f8278e59c35460384aaed77f16 SHA-256: d6935cdaa94a4da8e598eb0408fffb48079c0edf81db0414471e32805966c4eb
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or distribution mechanism. While the ML classifier flagged it as malicious, the majority of the extracted URLs were confirmed as benign. No scripts were extracted from this sample. The primary attack pattern appears to be the mass distribution of links, potentially for SEO manipulation or to serve as a landing page for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9102

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.li
    • http://xiixmcuin.linkpc.net/8208205207201200/CfE-Higher-Biology-Grade-Booster-by-Leckie-amp-Leckie.pdf
    • http://xiixmcuin.linkpc.net/4203200207203204/A-Minor-Raven-Boys-Holiday-Drabble-The-Raven-Cycle-0-4-by-Maggie-Stiefvater.pdf
    • http://xiixmcuin.linkpc.net/8208205207201202/Practice-Question-Book-for-CfE-and-SQA-Higher-Chemistry-Practice-Question-Book-by-Leckie-and-Leckie.pdf
    • http://xiixmcuin.linkpc.net/1200208204203206209/Raven-s-Tears-The-Raven-amp-The-Iris-1-by-Alesia-Matson.pdf
    • http://xiixmcuin.linkpc.net/2209204201202206/Raven-s-Shadow-Raven-Duology-1-by-Patricia-Briggs.pdf
    • http://xiixmcuin.linkpc.net/3201207207203/The-Raven-Boys-The-Raven-Cycle-1-by-Maggie-Stiefvater.pdf
    • http://xiixmcuin.linkpc.net/1201208202206200/Raven-s-Blood-Raven-Chronicles-4-by-Deborah-Cannon.pdf
    • http://xiixmcuin.linkpc.net/4207204206207202/Raven-s-Kiss-Raven-Grace-1-by-Toni-LoTempio.pdf
    • http://xiixmcuin.linkpc.net/4207200202203207/The-Raven-Boys-Raven-Cycle-1-by-Maggie-Stiefvater.pdf
    • http://xiixmcuin.linkpc.net/4203204204203/Raven-The-Raven-Saga-1-by-Suzy-Turner.pdf
    • http://xiixmcuin.linkpc.net/2202207203204208/Snow-Raven-Raven-3-by-Patricia-McAllister.pdf
    • http://xiixmcuin.linkpc.net/2201208203205200/Raven-s-Strike-Raven-2-by-Patricia-Briggs.pdf
    • http://xiixmcuin.linkpc.net/8209208208207207/White-Raven-Raven-1-by-J-L-Weil.pdf
    • http://xiixmcuin.linkpc.net/1209205205205202/White-Raven-Raven-1-by-J-L-Weil.pdf
    • http://xiixmcuin.linkpc.net/8208205207201207/More-Other-Homes-and-Garbage-by-Jim-Leckie.pdf
    • http://xiixmcuin.linkpc.net/3209204207202205/She-Commands-Me-and-I-Obey-by-Ann-Leckie.pdf
    • http://xiixmcuin.linkpc.net/3201205209204203/Underdog-by-Euan-Leckie.pdf
    • http://xiixmcuin.linkpc.net/3207202209202209/The-Dark-Tower-The-Dark-Tower-7-by-Stephen-King.pdf
    • http://xiixmcuin.linkpc.net/8208205206205202/The-Story-Of-Football-by-Robert-Leckie.pdf
    • http://xiixmcuin.linkpc.net/8208205206206200/The-World-War-II-Reader-by-Robert-Leckie.pdf

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