Malicious PDF — malware analysis report

Static analysis result for SHA-256 d78b8a4694371f32…

MALICIOUS

PDF

19.3 KB Created: 2019-05-03 19:25:32 +01:00 Authoring application: mPDF 5.7
MD5: 6d6b13ae305777b17ea40fb58e042ba8 SHA-1: c698ae077e9599c5f4851e40fea356275362d052 SHA-256: d78b8a4694371f3228d9e2d22a32e79b5eea06ed9c81fe97d3f4f66e9779a1a2
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, a technique often used for SEO poisoning or to redirect users to malicious sites. The ML classifier strongly indicated maliciousness. While the specific URLs extracted were flagged as benign, the overall structure and heuristic firings suggest a malicious intent to leverage these links. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

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://cmeinasaoo.duckdns.org/2b28b25b22b29b25/Freak-Show-Without-A-Tent-Swimming-with-Piranhas-Getting-Stoned-in-Fiji-and-Other-Family-Vacations-by-Nevin-Martell.pdf
    • http://cmeinasaoo.duckdns.org/6b27b24b28b20b20/Beck-The-Art-of-Mutation-by-Nevin-Martell.pdf
    • http://cmeinasaoo.duckdns.org/1b24b22b27b29b22/Getting-Stoned-with-Savages-A-Trip-Through-the-Islands-of-Fiji-and-Vanuatu-by-J-Maarten-Troost.pdf
    • http://cmeinasaoo.duckdns.org/4b24b28b25b26b25/Swimming-with-Piranhas-at-Feeding-Time-My-Life-Doing-Dumb-Stuff-with-Animals-by-Richard-Conniff.pdf
    • http://cmeinasaoo.duckdns.org/4b20b28b24b20b25/The-Freak-Show-by-Peter-Haining.pdf
    • http://cmeinasaoo.duckdns.org/1b25b28b28b26b20/Freak-Show-by-Valerie-Bandura.pdf
    • http://cmeinasaoo.duckdns.org/1b27b20b27b26b29/Red-The-Roy-G-Biv-Freak-Show-Book-1-by-Layne-A-Carver.pdf
    • http://cmeinasaoo.duckdns.org/2b28b25b27b29/Freak-Show-The-Nightshade-Cases-1-by-Patti-Larsen.pdf
    • http://cmeinasaoo.duckdns.org/4b21b29b20b20b21/Mr-Arashi-s-Amazing-Freak-Show-by-Suehiro-Maruo.pdf
    • http://cmeinasaoo.duckdns.org/2b20b20b23b29b26/Freak-Show-Alexa-O-Brien-Huntress-7-by-Trina-M-Lee.pdf
    • http://cmeinasaoo.duckdns.org/4b25b26b20b21b25/Freak-Show-Presenting-Human-Oddities-for-Amusement-and-Profit-by-Robert-Bogdan.pdf
    • http://cmeinasaoo.duckdns.org/4b29b27b20b21b21/Le-Freak-An-Upside-Down-Story-of-Family-Disco-and-Destiny-by-Nile-Rodgers.pdf
    • http://cmeinasaoo.duckdns.org/1b27b23b21b23b26/Freak-Show-by-James-St-James.pdf
    • http://cmeinasaoo.duckdns.org/1b26b27b27b29b23/Tent-City-Tent-City-1-by-Kelly-Van-Hull.pdf
    • http://cmeinasaoo.duckdns.org/4b25b26b20b23b22/DIY-Circus-Lab-for-Kids-A-Family--Friendly-Guide-for-Juggling-Balancing-Clowning-and-Show-Making-by-Jackie-Leigh-Davis.pdf
    • http://cmeinasaoo.duckdns.org/1b25b29b28b26b21/Company-Aytch-or-a-Side-Show-of-the-Big-Show-A-Memoir-of-the-Civil-War-by-Sam-R-Watkins.pdf
    • http://cmeinasaoo.duckdns.org/3b24b29b26b25b24/Pandemonia-Chronicles-DAWN-by-Carey-Martell.pdf
    • http://cmeinasaoo.duckdns.org/2b24b25b27b24b25/Cirque-Du-Freak-Boxed-Set-2-Cirque-Du-Freak-5-8-by-Darren-Shan.pdf
    • http://cmeinasaoo.duckdns.org/1b26b25b21b26b25/Cirque-Du-Freak-Boxed-Set-1-Cirque-Du-Freak-1-4-by-Darren-Shan.pdf
    • http://cmeinasaoo.duckdns.org/3b23b23b28b29b26/Fiji-by-Lance-Morcan.pdf
    • http://cmeinasaoo.duckdns.org/2b28b25b27b29/Freak-Show-The-Nightshade-Cases-1-by-

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