Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddaa97af586eb0b1…

MALICIOUS

PDF

17.8 KB Created: 2019-04-30 02:41:04 +01:00 Authoring application: mPDF 5.7
MD5: d509c51e48e6e9f6e82a5f76ea4007cf SHA-1: 76913ed97e04b1cc2cc1f9c85b265e1f8f249ac2 SHA-256: ddaa97af586eb0b14b591f3e3b12aec1132c1d3a5d945da50d8697fe2665a4f4
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified as a link farm. The ML classifier strongly indicates maliciousness. The primary attack pattern involves directing users to a collection of external links, likely for SEO poisoning or to distribute further malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9931

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://muicuiu.dumb1.com/2a02a09a02a05a08/Another-Thing-to-Fall-Tess-Monaghan-10-by-Laura-Lippman.pdf
    • http://muicuiu.dumb1.com/3a03a05a06a04a00/By-a-Spider-s-Thread-Tess-Monaghan-8-by-Laura-Lippman.pdf
    • http://muicuiu.dumb1.com/1a09a02a02a09a03/The-Sugar-House-Tess-Monaghan-5-by-Laura-Lippman.pdf
    • http://muicuiu.dumb1.com/2a06a08a05a00/No-Good-Deeds-Tess-Monaghan-9-by-Laura-Lippman.pdf
    • http://muicuiu.dumb1.com/4a07a07a07a07a01/Baltimore-Blues-Tess-Monaghan-1-by-Laura-Lippman.pdf
    • http://muicuiu.dumb1.com/1a06a09a07a08/By-a-Spider-s-Thread-Tess-Monaghan-8-by-Laura-Lippman.pdf
    • http://muicuiu.dumb1.com/1a08a07a01a04a00/In-a-Strange-City-Tess-Monaghan-6-by-Laura-Lippman.pdf
    • http://muicuiu.dumb1.com/1a05a08a09a05a05/The-Girl-in-the-Green-Raincoat-Tess-Monaghan-11-by-Laura-Lippman.pdf
    • http://muicuiu.dumb1.com/2a06a08a06a03/Every-Secret-Thing-by-Laura-Lippman.pdf
    • http://muicuiu.dumb1.com/1a00a04a06a06a08/The-Most-Dangerous-Thing-by-Laura-Lippman.pdf
    • http://muicuiu.dumb1.com/1a06a08a05a02/I-d-Know-You-Anywhere-by-Laura-Lippman.pdf
    • http://muicuiu.dumb1.com/3a08a04a07a08a01/What-the-Dead-Know-by-Laura-Lippman.pdf
    • http://muicuiu.dumb1.com/1a06a08a00a08a04/Hardly-Knew-Her-by-Laura-Lippman.pdf
    • http://muicuiu.dumb1.com/5a09a07a00a09a03/Mauvaise-compagnie-by-Laura-Lippman.pdf
    • http://muicuiu.dumb1.com/3a02a04a02/Wilde-Lake-by-Laura-Lippman.pdf
    • http://muicuiu.dumb1.com/1a01a02a01a05a04a04/Femme-Fatale-by-Laura-Lippman.pdf
    • http://muicuiu.dumb1.com/1a00a00a03a09a05a07/The-Monaghan-Story-A-Documented-History-Of-The-County-Monaghan-From-The-Earliest-Times-To-1976-by-Peadar-Livingstone.pdf
    • http://muicuiu.dumb1.com/9a00a03a00a06a04/The-Best-Thing-Ever-by-Laura-Theobald.pdf
    • http://muicuiu.dumb1.com/1a09a06a03a01a01/Free-Fall-Retrievers-5-by-Laura-Anne-Gilman.pdf
    • http://muicuiu.dumb1.com/1a00a07a01a00a06a00/Tess-Gerritsen-Collection-The-Mephisto-Club-Call-After-Midnight-In-Their-Footsteps-Gravity-Whistleblower-Under-The-Knife-Stolen-Presumed-Guilty-Keeper-Of-The-Bride-by-Tess-Gerritsen.pdf
    • http://muicuiu.dumb1.com/1a06a08a05a02/I-d-Know-You-Anywhere-by-