Malicious PDF — malware analysis report

Static analysis result for SHA-256 548a5f537a3a8d66…

MALICIOUS

PDF

30.3 KB Created: 2019-05-07 08:34:50 +01:00 Authoring application: mPDF 5.7
MD5: b5a253abe20ad20d4052f247a5dbe318 SHA-1: 9be878852a89a9f1c207c81af654e47e2a90b04b SHA-256: 548a5f537a3a8d6623f8bf33084dad49ba834bfc93f6ab2badb4e36ec5f9dc3f
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified as a link farm. The ML classifier also flagged this PDF as malicious. The primary purpose appears to be directing users to external sites, likely for malicious purposes such as phishing or malware distribution, despite the benign reputation of the specific URLs extracted.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9684

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.co
    • http://muicuiu.dumb1.com/5a05a08a05a09a09/Restless-Waters-Left-Drowning-2-by-Jessica-Park.pdf
    • http://muicuiu.dumb1.com/1a05a07a04/Restless-Waters-Left-Drowning-2-by-Jessica-Park.pdf
    • http://muicuiu.dumb1.com/2a08a05a05a06a08/Relatively-Famous-by-Jessica-Park.pdf
    • http://muicuiu.dumb1.com/5a05a08a05a02a03/180-Seconds-by-Jessica-Park.pdf
    • http://muicuiu.dumb1.com/1a01a00a01a05a05/180-Seconds-by-Jessica-Park.pdf
    • http://muicuiu.dumb1.com/1a01a06a02a09a06a00/Jurassic-Park-Michael-Crichton-List-of-Jurassic-Park-Characters-the-Lost-World-Jurassic-Park-Jurassic-Park-III-Biological-Issue-by-Source-Wikipedia.pdf
    • http://muicuiu.dumb1.com/6a09a04a06a02/Im-freien-Fall-oder-wie-ich-mich-in-eine-Pappfigur-verliebte-Flat-Out-Love-1-by-Jessica-Park.pdf
    • http://muicuiu.dumb1.com/3a00a00a04a00a08/He-Left-Her-at-the-Altar-She-Left-Him-to-the-Zombies-by-Katie-Cord.pdf
    • http://muicuiu.dumb1.com/4a03a02a07a07/Left-Behind-Series-Gift-Set-Left-Behind-1-6-by-Jerry-B-Jenkins.pdf
    • http://muicuiu.dumb1.com/1a01a07a06a04a08a03/Moderne-Im-Park-Der-Architekt-Helmut-Riemann-Und-Die-H-user-Im-Reemtsma-Park-In-Hamburg-by-Ulrich-H-hns.pdf
    • http://muicuiu.dumb1.com/9a09a00a09a08a04/Hill-s-Wilmington-New-Hanover-County-N-C-City-Directory-1959-Including-Audubon-Devon-Park-Edgewood-Foxtown-Garden-City-Hanover-Heights-Highwood-Park-Idlewild-Long-Leaf-Hills-Oak-Court-Oak-Crest-Piney-Woods-and-Winter-Park-Containing-an-by-Hill-Directory-Company.pdf
    • http://muicuiu.dumb1.com/9a09a00a09a08a02/Hill-s-Wilmington-New-Hanover-County-N-C-City-Directory-1961-Including-Audubon-Devon-Park-Edgewood-Foxtown-Garden-City-Hanover-Heights-Highwood-Park-Idlewild-Long-Leaf-Hills-Oak-Court-Oak-Crest-Piney-Woods-and-Winter-Park-by-Hill-Directory-Company.pdf
    • http://muicuiu.dumb1.com/9a09a00a09a08a03/Hill-s-Wilmington-New-Hanover-County-N-C-City-Directory-1960-Including-Audubon-Devon-Park-Edgewood-Foxtown-Garden-City-Hanover-Heights-Highwood-Park-Idlewild-Long-Leaf-Hills-Oak-Court-Oak-Crest-Piney-Woods-and-Winter-Park-by-Hill-Directory-Company.pdf
    • http://muicuiu.dumb1.com/5a05a07a01a00/What-s-Left-of-Me-What-s-Left-of-Me-1-by-Amanda-Maxlyn.pdf
    • http://muicuiu.dumb1.com/9a09a00a09a07a08/Hill-s-Wilmington-New-Hanover-County-N-C-City-Directory-1956-Including-Audubon-Devon-Park-Edgewood-Foxtown-Garden-City-Hanover-Heights-Highwood-Park-Idlewild-Longleaf-Hill-Oak-Court-Oak-Crest-Piney-Woods-and-Winter-Park-by-Hill-Directory-Company.pdf
    • http://muicuiu.dumb1.com/5a05a06a07a01a04/Shadows-of-the-Moon-Black-Wolf-Agency-2-by-Jessica-Musso-Jessica-Lupo-.pdf
    • http://muicuiu.dumb1.com/5a05a06a07a00a05/To-Live-and-To-Love-Black-Wolf-Agency-1-by-Jessica-Musso-Jessica-Lupo-.pdf
    • http://muicuiu.dumb1.com/5a05a06a06a09a04/The-Heart-of-the-Rougarou-The-Secret-of-Wolf-River-1-by-Jessica-Musso-Jessica-Lupo-.pdf
    • http://muicuiu.dumb1.com/7a07a02a09a02/Jessica-Jessica-Trouble-Sweet-Valley-Kids-59-by-Francine-Pascal.pdf
    • http://muicuiu.dumb1.com/4a08a07a09a07/The-Wedding-of-Antanasia-Jessica-Packwood-and-Lucius-Valeriu-Vladescu-Jessica-1-5-by-Beth-Fantaskey.pdf

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