Malicious PDF — malware analysis report

Static analysis result for SHA-256 5141db6ce0bca4d7…

MALICIOUS

PDF

17.8 KB Created: 2019-04-30 04:06:04 +01:00 Authoring application: mPDF 5.7
MD5: 1623aa71e49789137e4ab8e87ff1e688 SHA-1: 1ac0f5c22911d6fc6a3836ef780973323dac0811 SHA-256: 5141db6ce0bca4d723d765379546337188ba1be217cb970f84de730d813ccd37
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier as malicious and contains a large number of embedded links to external PDF files, a technique often used for SEO spam or to redirect users to malicious content. While the specific URLs extracted were labeled as benign, the sheer volume and the critical heuristic firing indicate a malicious intent to manipulate search engine results or distribute unwanted content. No scripts were extracted from this sample.

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://muicuiu.dumb1.com/5a02a03a08a08a04/Scrivere-un-Giallo-Come-Strutturare-Trama-e-Personaggi-per-un-Giallo-Avvincente-dalla-Prima-all-Ultima-Riga-Ebook-Italiano---Anteprima-Gratis-Come-Prima-all-Ultima-Riga-by-Daniela-Folco.pdf
    • http://muicuiu.dumb1.com/6a03a08a08a06a04/Un-ballerino-in-paradiso-by-Liala.pdf
    • http://muicuiu.dumb1.com/7a02a05a03a09a00/Il-Paradiso-Terrestre-by-Micaela-Forza.pdf
    • http://muicuiu.dumb1.com/3a08a04a02a03a04/The-Embassy-A-Story-of-War-and-Diplomacy-by-Dante-Paradiso.pdf
    • http://muicuiu.dumb1.com/5a01a08a08a01a03/Storie-meravigliose-degli-animali-in-paradiso-by-Aldo-Alberti.pdf
    • http://muicuiu.dumb1.com/2a08a01a02a01a01/Ultima-by-Stephen-Baxter.pdf
    • http://muicuiu.dumb1.com/4a00a04a07a04/Bless-Me-Ultima-by-Rudolfo-Anaya.pdf
    • http://muicuiu.dumb1.com/6a03a05a06a07a07/Aigle-by-Aziz-Chouaki.pdf
    • http://muicuiu.dumb1.com/7a04a09a08a06a06/Le-Vol-de-l-Aigle-I-L-re-des-conqu-rants-by-M-L-Versini.pdf
    • http://muicuiu.dumb1.com/5a06a06a06a01a02/LEONOR-La-ltima-Emperatriz-by-Helena-de-Galays.pdf
    • http://muicuiu.dumb1.com/1a00a03a09a04a07a06/Ultima----by-Victor-Pelevin.pdf
    • http://muicuiu.dumb1.com/6a04a08a02a09a07/A-ltima-Viagem-do-Lusitania-by-Erik-Larson.pdf
    • http://muicuiu.dumb1.com/5a06a08a04a01a00/L-aigle-gyptien-Nasser-by-Gilbert-Sinou-.pdf
    • http://muicuiu.dumb1.com/1a03a05a09a02a09/Broken-Fated-Saga-4-by-Rachel-M-Humphrey-D-39-aigle.pdf
    • http://muicuiu.dumb1.com/7a09a09a00a07/Shifting-Fated-Saga-2-by-Rachel-M-Humphrey-D-39-aigle.pdf
    • http://muicuiu.dumb1.com/1a01a05a00a03a00a02/Witches-of-The-Demon-Isle-Box-Set-Volumes-1-3-by-Rachel-M-Humphrey-D-39-aigle.pdf
    • http://muicuiu.dumb1.com/5a04a05a08a08a06/L-Aigle-et-la-Salamandre-Tome-1-Naissance-dans-le-brasier-by-Antoine-Piatzszek.pdf
    • http://muicuiu.dumb1.com/7a08a00a09a06/Wicked-Werewolves-The-Demon-Isle-Witches-2-by-Rachel-M-Humphrey-D-39-aigle.pdf
    • http://muicuiu.dumb1.com/7a08a07a00a01/Ghostly-Guardian-The-Demon-Isle-Witches-1-by-Rachel-M-Humphrey-D-39-aigle.pdf
    • http://muicuiu.dumb1.com/8a08a08a09a09a00/-El-derecho-penal-es-la-ultima-ratio-para-la-protecci-n-de-bienes-jur-dicos-by-Sch-nemann-Bernd.pdf
    • http://muicuiu.dumb1.com/4a00a04a07a04/Bless-Me-Ultima-by-Rudolfo-An

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