Malicious PDF — malware analysis report

Static analysis result for SHA-256 0819869927160419…

MALICIOUS

PDF

16.8 KB Created: 2019-05-02 01:30:08 +01:00 Authoring application: mPDF 5.7
MD5: 0277eac29b49aa5cc7451de1580aaedf SHA-1: 659b565e670f7bf4b2cbe3bf854ac9fe5fc27579 SHA-256: 0819869927160419a37177793073c06961a9ea763db3a29bd013d78fac1af5a6
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs that point to external PDF files, a technique often used for SEO spam or to distribute malicious content. While the document body is heavily obfuscated, the heuristic 'PDF_SEO_LINK_FARM' strongly indicates this malicious intent. The ML classifier also flagged the document as malicious with high confidence. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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://loaminoo.linkpc.net/3092091096093098/The-Wanderer-by-Sharon-Creech.pdf
    • http://loaminoo.linkpc.net/1094091093093099/The-Wanderer-by-Sharon-Creech.pdf
    • http://loaminoo.linkpc.net/3098099096093/Bloomability-by-Sharon-Creech.pdf
    • http://loaminoo.linkpc.net/7099093095091/The-Castle-Corona-by-Sharon-Creech.pdf
    • http://loaminoo.linkpc.net/2099098098093095/Walk-Two-Moons-by-Sharon-Creech.pdf
    • http://loaminoo.linkpc.net/4096098096095/Absolutely-Normal-Chaos-by-Sharon-Creech.pdf
    • http://loaminoo.linkpc.net/2097099096098092/Absolutely-Normal-Chaos-by-Sharon-Creech.pdf
    • http://loaminoo.linkpc.net/3091090096097093/The-Soup-Sisters-Cookbook-100-Simple-Recipes-to-Warm-Hearts-One-Bowl-at-a-Time-by-Sharon-Hapton.pdf
    • http://loaminoo.linkpc.net/3097096090092097/9x-Fun-A-Children-s-Picture-Book-That-Makes-Math-Fun-with-a-Cartoon-Story-Format-to-Help-Kids-Learn-the-9x-Table-by-Sharon-Clark.pdf
    • http://loaminoo.linkpc.net/4091095091091091/Chicken-Soup-Teenage-Trilogy-Chicken-Soup-for-the-Soul-by-Jack-Canfield.pdf
    • http://loaminoo.linkpc.net/2095095093093098/Chicken-Soup-for-the-Father-and-Daughter-Soul-Stories-to-Celebrate-the-Love-Between-Dads-and-Daughters-Throughout-the-Years-Chicken-Soup-for-the-Soul-by-Jack-Canfield.pdf
    • http://loaminoo.linkpc.net/3091091091094091/Cooking-with-Soup-A-Campbell-Cookbook-by-Campbell-Soup-Company.pdf
    • http://loaminoo.linkpc.net/2096090099090092/Alphabet-Soup-Alphabet-Soup-1-Russian-Bear-2-by-C-B-Conwy.pdf
    • http://loaminoo.linkpc.net/3093094095098091/The-Whole-Way-Home-by-Sarah-Creech.pdf
    • http://loaminoo.linkpc.net/3094091099096092/Season-of-the-Dragonflies-by-Sarah-Creech.pdf
    • http://loaminoo.linkpc.net/4093095096099/Granny-Dan-by-Danielle-Steel.pdf
    • http://loaminoo.linkpc.net/1096096098094095/What-Cried-Granny-by-Kate-Lum.pdf
    • http://loaminoo.linkpc.net/7099093099095091/Under-the-Gun-Granny-Series-4-by-Kelsey-Browning.pdf
    • http://loaminoo.linkpc.net/1090098093097098090/Granny-Rainbow-by-Katherine-Hetzel.pdf
    • http://loaminoo.linkpc.net/4095093093096/Gangsta-Granny-by-David-Walliams.pdf

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