Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8a1fc689c5e7b3b…

MALICIOUS

PDF

15.4 KB Created: 2019-05-03 05:08:57 +01:00 Authoring application: mPDF 5.7
MD5: d4c35cef8f4d995c679732ef968940a0 SHA-1: 3cbd2f251f9c69188edc095aeda38864bc025c2f SHA-256: c8a1fc689c5e7b3bc37dfce688c8c362efaa3e894ee0fda3b2221e8e25d15832
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or distribution mechanism. While the ML classifier flagged it as malicious, the specific URLs themselves are marked as confirmed benign. The DOC BODY section is heavily corrupted and unreadable, preventing a deeper analysis of its content or intent. Therefore, the primary attack pattern is inferred from the link farm heuristic.

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/4094092098098/Dangerous-Boys-by-Abigail-Haas.pdf
    • http://loaminoo.linkpc.net/7094097095096/Dangerous-Girls-Dangerous-Girls-1-by-R-L-Stine.pdf
    • http://loaminoo.linkpc.net/1094095094096097/Armed-amp-Dangerous-Cut-amp-Run-5-by-Abigail-Roux.pdf
    • http://loaminoo.linkpc.net/3098092090094/Armed-amp-Dangerous-Cut-amp-Run-5-by-Abigail-Roux.pdf
    • http://loaminoo.linkpc.net/2090097093091096/The-Taste-of-Night-Dangerous-Girls-2-by-R-L-Stine.pdf
    • http://loaminoo.linkpc.net/6099093099092/The-School-for-Dangerous-Girls-by-Eliot-Schrefer.pdf
    • http://loaminoo.linkpc.net/3097094096095093/Rude-Girls-and-Dangerous-Women-by-Jennifer-Camper.pdf
    • http://loaminoo.linkpc.net/5090095092090098/Dear-Abigail-The-Intimate-Lives-and-Revolutionary-Ideas-of-Abigail-Adams-and-Her-Two-Remarkable-Sisters-by-Diane-Jacobs.pdf
    • http://loaminoo.linkpc.net/4093091094095099/Abigail-Jones-Chronicles-of-Abigail-Jones-1-by-Grace-Callaway.pdf
    • http://loaminoo.linkpc.net/1097090099098090/A-Dangerous-Man-The-Complete-Collection-A-Dangerous-Man-1-4-by-Serena-Grey.pdf
    • http://loaminoo.linkpc.net/4091095093098091/Dangerous-Passion-Dangerous-3-by-Lisa-Marie-Rice.pdf
    • http://loaminoo.linkpc.net/8098091/Dangerous-Deception-Dangerous-Creatures-2-by-Kami-Garcia.pdf
    • http://loaminoo.linkpc.net/4091099091098094/--LOST-GIRLS-1-Shingeki-no-Kyojin-Lost-Girls-1-Attack-on-Titan-Lost-Girls-Manga-1-by-Hajime-Isayama.pdf
    • http://loaminoo.linkpc.net/1093093095092/Chase-by-Jessie-Haas.pdf
    • http://loaminoo.linkpc.net/1093095098098/Unbroken-by-Jessie-Haas.pdf
    • http://loaminoo.linkpc.net/4096097090099091/Runaway-Pony-by-Jessie-Haas.pdf
    • http://loaminoo.linkpc.net/4096096097092090/A-Horse-Like-Barney-by-Jessie-Haas.pdf
    • http://loaminoo.linkpc.net/1093095092094/Runaway-Radish-by-Jessie-Haas.pdf
    • http://loaminoo.linkpc.net/3090099093096092/Scarlet-City-by-Rebekah-Haas.pdf
    • http://loaminoo.linkpc.net/5092095094097/Columbus-Silver-Bear-2-by-Derek-Haas.pdf

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