Malicious PDF — malware analysis report

Static analysis result for SHA-256 941c07c8e986eae0…

MALICIOUS

PDF

12.9 KB Created: 2019-05-04 14:07:47 +01:00 Authoring application: mPDF 5.7 First seen: 2021-06-13
MD5: 27c25a70c7d8a7ecec89cd7810a1445a SHA-1: cf6cff0b73a92b266b0c6bd4429e74fc9196d5dc SHA-256: 941c07c8e986eae09f943d91b9c1bf43407ed31905b45c4c97f2871040811bef
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. While the ML classifier flagged this as malicious, the specific intent beyond link farming is unclear due to the lack of executable scripts or clear malicious document body content. The embedded links are likely the primary mechanism for the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9006

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.linkpc.net/1204204208209200/Scandal-in-Spring-Wallflowers-4-by-Lisa-Kleypas.pdf In PDF document text
    • http://xiixmcuin.linkpc.net/1202203206204/Suddenly-You-by-Lisa-Kleypas.pdfIn PDF document text
    • http://xiixmcuin.linkpc.net/8207209207208/Where-Dreams-Begin-by-Lisa-Kleypas.pdfIn PDF document text
    • http://xiixmcuin.linkpc.net/3208204207208209/Where-Dreams-Begin-by-Lisa-Kleypas.pdfIn PDF document text
    • http://xiixmcuin.linkpc.net/1207206209201205/Only-With-Your-Love-Vallerands-2-by-Lisa-Kleypas.pdfIn PDF document text
    • http://xiixmcuin.linkpc.net/3200201201209203/Devil-in-Winter-The-by-Lisa-Kleypas.pdfIn PDF document text
    • http://xiixmcuin.linkpc.net/3206206201206202/Devil-in-Winter-by-Lisa-Kleypas.pdfIn PDF document text
    • http://xiixmcuin.linkpc.net/3209200201206206/Dreaming-of-You-Gamblers-2-by-Lisa-Kleypas.pdfIn PDF document text
    • http://xiixmcuin.linkpc.net/4203201209206206/Give-Me-Tonight-by-Lisa-Kleypas.pdfIn PDF document text
    • http://xiixmcuin.linkpc.net/3208203204201206/Again-the-Magic-Wallflowers-0-5-by-Lisa-Kleypas.pdfIn PDF document text
    • http://xiixmcuin.linkpc.net/2207209202204200/Hello-Stranger-The-Ravenels-4-by-Lisa-Kleypas.pdfIn PDF document text
    • http://xiixmcuin.linkpc.net/1200206209208/Love-in-the-Afternoon-The-Hathaways-5-by-Lisa-Kleypas.pdfIn PDF document text
    • http://xiixmcuin.linkpc.net/4207207206209207/Tempt-Me-at-Twilight-The-Hathaways-3-by-Lisa-Kleypas.pdfIn PDF document text
    • http://xiixmcuin.linkpc.net/1203203209208206/Midnight-Angel-Stokehurst-1-by-Lisa-Kleypas.pdfIn PDF document text
    • http://xiixmcuin.linkpc.net/2209208205206201/The-Devil-in-Winter-Wallflowers-3-by-Lisa-Kleypas.pdfIn PDF document text
    • http://xiixmcuin.linkpc.net/3209202208207207/It-Happened-One-Autumn-Wallflowers-2-by-Lisa-Kleypas.pdfIn PDF document text
    • http://xiixmcuin.linkpc.net/1200207203201202208/Secrets-of-Summer-Nights-by-Lisa-Kleypas.pdfIn PDF document text
    • http://xiixmcuin.linkpc.net/4201205206205208/Seduce-Me-at-Sunrise-The-Hathaways-2-by-Lisa-Kleypas.pdfIn PDF document text
    • http://xiixmcuin.linkpc.net/6204202206206206/--Gamblers-of-Craven-s-2-by-Lisa-Kleypas.pdfIn PDF document text
    • http://xiixmcuin.linkpc.net/8202205200206207/Diavolul-n-iarn-Wallflowers-3-by-Lisa-Kleypas.pdfIn PDF document text

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