Malicious PDF — malware analysis report

Static analysis result for SHA-256 64528290b1b1d9df…

MALICIOUS

PDF

16.2 KB Created: 2019-05-03 05:07:56 +01:00 Authoring application: mPDF 5.7
MD5: 1a063a862cd524df1cb9335932982ee3 SHA-1: fb9323c8cc532398a112b72657422d86db773161 SHA-256: 64528290b1b1d9df830b710912ed4c35b5af300b532d11bb379d29a9c8cf3177
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified as a link farm. While the URLs themselves are marked as benign, the sheer volume and the heuristic firing of 'PDF_SEO_LINK_FARM' suggest a malicious intent, possibly for SEO manipulation or to redirect users to malicious content. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

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/2098093090099090/Love-in-a-Time-of-Monsters-Golden-Age-of-Monsters-1-by-Teresa-Yea.pdf
    • http://loaminoo.linkpc.net/6090099098098099/Gila-Monsters-Learn-About-Gila-Monsters-and-Enjoy-Colorful-Pictures---Look-and-Learn-50-Photos-of-Gila-Monsters-by-Becky-Wolff.pdf
    • http://loaminoo.linkpc.net/9092091094091/Pacific-Monsters-Fox-Spirit-Books-of-Monsters-4-by-Margr-t-Helgad-ttir.pdf
    • http://loaminoo.linkpc.net/9095097097095/African-Monsters-Fox-Spirit-Books-of-Monsters-2-by-Margr-t-Helgad-ttir.pdf
    • http://loaminoo.linkpc.net/3098098091097092/Lights-Camera-Monsters-Monsters-in-Hollywood-1-by-Lila-Dubois.pdf
    • http://loaminoo.linkpc.net/3095094095098091/Sleeping-with-Monsters-Playing-with-Monsters-2-by-Amelia-Hutchins.pdf
    • http://loaminoo.linkpc.net/2096095098091092/Sleeping-with-Monsters-Playing-With-Monsters-2-by-Amelia-Hutchins.pdf
    • http://loaminoo.linkpc.net/4092097096090099/The-Last-of-the-Monsters-Monsters-in-Hollywood-6-by-Lila-Dubois.pdf
    • http://loaminoo.linkpc.net/8093093099095/Monsters-in-the-Dark-Monsters-in-the-Dark-1-3-by-Pepper-Winters.pdf
    • http://loaminoo.linkpc.net/4098094090090095/The-Monster-Dating-Agency-Monsters-Need-Love-and-Romance-Too---Paranormal-Comedy-Book-1-by-Abbi-Blake.pdf
    • http://loaminoo.linkpc.net/3090097096094092/Probably-Monsters-by-Ray-Cluley.pdf
    • http://loaminoo.linkpc.net/9092093096/Men-and-Monsters-Nightfall-2-by-Elena-May.pdf
    • http://loaminoo.linkpc.net/1091092097091092092/Conversations-with-Monsters-by-A-M-Raddatz.pdf
    • http://loaminoo.linkpc.net/2097097092092094/Monsters-by-Peter-Cawdron.pdf
    • http://loaminoo.linkpc.net/7099094094098094/The-Masks-of-Monsters-by-Narayan-Liu.pdf
    • http://loaminoo.linkpc.net/2098098090097/Monsters-of-Men-by-Patrick-Ness.pdf
    • http://loaminoo.linkpc.net/6096098093097090/Monsters-Inc-by-Hiromi-Yamafuji.pdf
    • http://loaminoo.linkpc.net/6097094095093098/In-The-Absence-of-Monsters-by-J-P-Barnaby.pdf
    • http://loaminoo.linkpc.net/3091091098098098/My-Teachers-Are-Monsters-by-R-W-Mitchell.pdf
    • http://loaminoo.linkpc.net/1091094093094098091/Many-Marvelous-Monsters-by-Ed-Heck.pdf

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