Malicious PDF — malware analysis report

Static analysis result for SHA-256 e18fe2741dafc39b…

MALICIOUS

PDF

15.4 KB Created: 2019-04-30 04:57:30 +01:00 Authoring application: mPDF 5.7
MD5: 6aa206acd38602f3c70acfd69c1e6f39 SHA-1: 02e0c34ac783099726c0af758158dd9b0e11664e SHA-256: e18fe2741dafc39bdaab001638e471fdde821a66871172fa5c4c33420a20f47f
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified as a link farm. While the URLs themselves are currently flagged as benign, the sheer volume and the heuristic 'PDF_SEO_LINK_FARM' strongly suggest a malicious intent, likely to redirect users to harmful sites or for SEO abuse. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9778

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/9a03a04a09a07a04/Tidal-Wave-Tide-2-by-K-Dicke.pdf
    • http://muicuiu.dumb1.com/9a03a05a02a05a05/Rip-Tide-Tide-3-by-K-Dicke.pdf
    • http://muicuiu.dumb1.com/4a02a05a06a07a08/The-God-Wave-The-God-Wave-Trilogy-1-by-Patrick-Hemstreet.pdf
    • http://muicuiu.dumb1.com/5a05a02a02a03/The-5th-Wave-The-5th-Wave-1-by-Rick-Yancey.pdf
    • http://muicuiu.dumb1.com/4a00a07a02a07a05/The-Tide-The-Tide-1-by-Anthony-J-Melchiorri.pdf
    • http://muicuiu.dumb1.com/3a08a02a08a06/Tidal-Watersong-3-by-Amanda-Hocking.pdf
    • http://muicuiu.dumb1.com/1a07a06a05a00a01/Tidal-Whispers-by-Jocelyn-Adams.pdf
    • http://muicuiu.dumb1.com/4a04a06a05a08/Tidal-Mist-by-Honor-Donohoe.pdf
    • http://muicuiu.dumb1.com/4a08a00a07a02a00/A-Christmas-Heat-Wave-Heat-Wave-3-5-by-Alannah-Lynne.pdf
    • http://muicuiu.dumb1.com/3a05a03a04a07a02/Deep-Dive-Tidal-Crest-1-by-Jeff-Erno.pdf
    • http://muicuiu.dumb1.com/9a03a05a04a00a01/Der-dicke-Vielspritzer-by-Mia-Hotblood.pdf
    • http://muicuiu.dumb1.com/9a03a05a03a01a01/Dicke-Frauen-by-Anni-Brand.pdf
    • http://muicuiu.dumb1.com/3a05a09a01a07a07/Dead-Tide-Dead-Tide-1-by-Stephen-A-North.pdf
    • http://muicuiu.dumb1.com/1a03a08a01a03a02/Raider-s-Tide-Raider-s-Tide-1-by-Maggie-Prince.pdf
    • http://muicuiu.dumb1.com/9a03a05a03a02a08/Dicke-Schoko-Schw-nze-2-by-Dennis-Dolle.pdf
    • http://muicuiu.dumb1.com/9a03a05a02a01a04/Drei-dicke-Freunde-by-Erhard-Dietl.pdf
    • http://muicuiu.dumb1.com/9a03a05a03a02a03/Dicke-Schoko-Schw-nze-by-Stefan-Schneller.pdf
    • http://muicuiu.dumb1.com/3a04a01a05a01a01/The-World-of-the-Salt-Marsh-Appreciating-and-Protecting-the-Tidal-Marshes-of-the-Southeastern-Atlantic-Coast-by-Charles-Seabrook.pdf
    • http://muicuiu.dumb1.com/1a01a08a04a06a02a09/Regenerative-and-Cell-Therapy-Clinical-Advances-by-K-Dicke.pdf
    • http://muicuiu.dumb1.com/9a03a05a03a02a09/Dicke-Luft---Konfliktmanagement-in-Gesundheitsberufen-by-Lore-Wehner.pdf
    • http://muicuiu.dumb1.com/9a03a05a03a01a01/Dicke-

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