Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e98b2efd1b6a463…

MALICIOUS

PDF

14.8 KB Created: 2019-06-04 12:38:02 +01:00 Authoring application: mPDF 5.7
MD5: 538f970d8221fc9e19627edea9b137ee SHA-1: 645680861253a07af6f4ab3d73e947114508b128 SHA-256: 4e98b2efd1b6a4638eaefeb669ecb622321b0b01249506c88e56746b2736c657
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ML classifier also flagged this PDF as malicious. While the URLs themselves are currently marked as benign, the sheer volume and the heuristic firing suggest a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9798

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://cefasfese.4pu.com/8736731738730/Star-of-the-Morning-Nine-Kingdoms-1-by-Lynn-Kurland.pdf
    • http://cefasfese.4pu.com/2739737733737737/Dreamspinner-Nine-Kingdoms-7-by-Lynn-Kurland.pdf
    • http://cefasfese.4pu.com/2734738738732736/River-of-Dreams-Nine-Kingdoms-8-by-Lynn-Kurland.pdf
    • http://cefasfese.4pu.com/2731738736731734/One-Magic-Moment-de-Piaget-11-de-Piaget-MacLeod-17-by-Lynn-Kurland.pdf
    • http://cefasfese.4pu.com/1738731738730733/A-Garden-in-the-Rain-MacLeod-4-de-Piaget-MacLeod-10-by-Lynn-Kurland.pdf
    • http://cefasfese.4pu.com/1737732735737736/My-Heart-Stood-Still-MacLeod-3-de-Piaget-MacLeod-8-by-Lynn-Kurland.pdf
    • http://cefasfese.4pu.com/1735733734738738/A-Time-for-Love-de-Piaget-1-2-de-Piaget-MacLeod-5-amp-7-by-Lynn-Kurland.pdf
    • http://cefasfese.4pu.com/7737732731730/Dreams-of-Stardust-de-Piaget-3-de-Piaget-MacLeod-11-by-Lynn-Kurland.pdf
    • http://cefasfese.4pu.com/4739731731734738/Dreams-of-Lilacs-de-Piaget-13-de-Piaget-MacLeod-20-by-Lynn-Kurland.pdf
    • http://cefasfese.4pu.com/1732736730739/Another-Chance-to-Dream-de-Piaget-1-de-Piaget-MacLeod-5-by-Lynn-Kurland.pdf
    • http://cefasfese.4pu.com/8737733731730/The-More-I-See-You-de-Piaget-7-de-Piaget-MacLeod-6-by-Lynn-Kurland.pdf
    • http://cefasfese.4pu.com/4733736735733738/Star-of-the-Morning-by-Pamela-Jooste.pdf
    • http://cefasfese.4pu.com/4733734731737735/The-Sun-Is-But-a-Morning-Star-by-James-Prothero.pdf
    • http://cefasfese.4pu.com/5737731737739/The-Morning-Star-Katerina-3-by-Robin-Bridges.pdf
    • http://cefasfese.4pu.com/4730735730736737/Mr-Whittle-and-the-Morning-Star-by-Robert-Nathan.pdf
    • http://cefasfese.4pu.com/4732737735731733/Equinox-The-Morning-Star-2-by-Tania-Penn.pdf
    • http://cefasfese.4pu.com/5732739731734/Morning-Star-Red-Rising-3-by-Pierce-Brown.pdf
    • http://cefasfese.4pu.com/1730730734734730/Queen-and-Country-Vol-2-Morning-Star-by-Greg-Rucka.pdf
    • http://cefasfese.4pu.com/3732739737735739/The-Morning-Star-The-Rocheport-Saga-Book-1-by-C-W-Hawes.pdf
    • http://cefasfese.4pu.com/3734735730738731/Texas-Secrets-The-Gallaghers-of-Morning-Star-1-by-Jean-Brashear.pdf

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