Malicious PDF — malware analysis report

Static analysis result for SHA-256 4de3e3a329bc70b0…

MALICIOUS

PDF

12.9 KB Created: 2019-05-07 03:26:32 +01:00 Authoring application: mPDF 5.7
MD5: 2d03fa9ad3b8aaf93f9f35d0c0b20a95 SHA-1: af8ed87e8eab045565f6281f30f4193b31cfa3ab SHA-256: 4de3e3a329bc70b0c977c6f24350ab44126f71488e51d67227d012ca136f55ff
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. While the document body is heavily corrupted, the presence of numerous links suggests an attempt to manipulate search engine results or redirect users to potentially malicious content. The ML classifier also flagged the document as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8891

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/4a05a05a05a04a02/Threads-by-Tom-Tinney.pdf
    • http://muicuiu.dumb1.com/8a03a02a03a06a02/Bluebird-by-Jason-Tinney.pdf
    • http://muicuiu.dumb1.com/1a06a08a03a08a04/There-s-No-Such-Thing-as-Free-Speech-And-It-s-a-Good-Thing-Too-by-Stanley-Fish.pdf
    • http://muicuiu.dumb1.com/1a07a01a02a05a03/One-Small-Thing-One-Thing-1-by-Piper-Vaughn.pdf
    • http://muicuiu.dumb1.com/7a08a07a00a07/One-Small-Thing-One-Thing-1-by-Piper-Vaughn.pdf
    • http://muicuiu.dumb1.com/4a01a01a09a06/Swamp-Thing-Vol-1-Saga-of-the-Swamp-Thing-by-Alan-Moore.pdf
    • http://muicuiu.dumb1.com/8a03a06a05a06/Sweet-Thing-Sweet-Thing-1-by-Renee-Carlino.pdf
    • http://muicuiu.dumb1.com/3a08a00a03a02/Sweet-Thing-Sweet-Thing-1-by-Renee-Carlino.pdf
    • http://muicuiu.dumb1.com/4a01a05a06a05a02/Heath-by-K-Webster.pdf
    • http://muicuiu.dumb1.com/4a08a01a09a08a05/Dig-Ten-Graves-by-Heath-Lowrance.pdf
    • http://muicuiu.dumb1.com/7a04a05a06a02a03/Caldera-by-Heath-Stallcup.pdf
    • http://muicuiu.dumb1.com/4a05a09a01a02a04/Burn-by-Heath-Gibson.pdf
    • http://muicuiu.dumb1.com/1a05a06a00a02a04/The-Wind-on-the-Heath-by-Tom-Gallacher.pdf
    • http://muicuiu.dumb1.com/3a09a03a01a09a05/Graft-by-Helen-Heath.pdf
    • http://muicuiu.dumb1.com/2a05a04a04a04/Marigold-s-Marriages-by-Sandra-Heath.pdf
    • http://muicuiu.dumb1.com/3a05a02a06a08a01/Angel-Cuffs-by-Amanda-Heath.pdf
    • http://muicuiu.dumb1.com/8a04a05a03a04/A-Regency-Christmas-IX-by-Sandra-Heath.pdf
    • http://muicuiu.dumb1.com/1a05a06a06a00a01/The-History-of-My-Body-by-Sharon-Heath.pdf
    • http://muicuiu.dumb1.com/1a00a01a09a06a01a07/A-Grammar-of-Tamashek-by-Jeffrey-Heath.pdf
    • http://muicuiu.dumb1.com/2a08a04a08a07a04/Sunday-In-New-York-by-Charles-Heath.pdf
    • http://muicuiu.dumb1.com/3a09a03a01a09a05/Graft-by-He

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