Malicious PDF — malware analysis report

Static analysis result for SHA-256 44784eae3ca5afc5…

MALICIOUS

PDF

26.0 KB Created: 2019-05-01 19:46:28 +01:00 Authoring application: mPDF 5.7
MD5: a7ccfa5bc74a5290715c44264243970a SHA-1: af0fe9b555e501e335ae17da54b0bbb8cdf3e992 SHA-256: 44784eae3ca5afc5c55b11bcf0a97fe71acf176c7e9bd51c53954a02e51dab42
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, identified as a link farm. The ML classifier strongly indicated maliciousness. The primary attack pattern involves redirecting users to numerous external sites, likely for SEO poisoning or to serve further malicious content. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the exact payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9903

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/1095090094098090/A-Second-Daniel-In-the-Den-of-the-English-Lion-1-by-Neal-Roberts.pdf
    • http://loaminoo.linkpc.net/5090099093091098/The-Lion-Wakes-A-Modern-History-of-HSBC-by-Richard-Roberts.pdf
    • http://loaminoo.linkpc.net/4098094095096099/The-Lion-and-the-Unicorn-Socialism-and-the-English-Genius-by-George-Orwell.pdf
    • http://loaminoo.linkpc.net/4098098099095/A-History-of-the-English-Speaking-Peoples-Since-1900-by-Andrew-Roberts.pdf
    • http://loaminoo.linkpc.net/1091096093091091/The-English-Spy-Gabriel-Allon-15-by-Daniel-Silva.pdf
    • http://loaminoo.linkpc.net/9090096090091/The-English-Girl-Gabriel-Allon-13-by-Daniel-Silva.pdf
    • http://loaminoo.linkpc.net/8092098091090098/The-Book-of-the-Civilised-Man-An-English-Translation-of-the-Urbanus-Magnus-of-Daniel-of-Beccles-by-Fiona-Whelan.pdf
    • http://loaminoo.linkpc.net/6097096098094090/Red-Lion-Blue-Lion-WARS-The-Battle-of-Phobos---Gongen-Part-2-of-3-by-Sabrina-Fried.pdf
    • http://loaminoo.linkpc.net/9091091099097095/Danny-Duck-Tames-the-Lion-Danny-Pato-doma-al-Le-n---Bilingual-Book-in-English-and-Spanish-Study-Spanish-for-Kids-1-by-Colin-Hann.pdf
    • http://loaminoo.linkpc.net/2095093095095098/A-Lion-Called-Christian-The-True-Story-of-the-Remarkable-Bond-Between-Two-Friends-and-a-Lion-by-Anthony-Bourke.pdf
    • http://loaminoo.linkpc.net/5091092095093093/3-1-3-gatsu-no-Lion-1-March-comes-in-like-a-lion-1-by-Chica-Umino.pdf
    • http://loaminoo.linkpc.net/8094094092092090/Specimens-of-Early-English-Metrical-Romances-Saxon-Romances-Guy-of-Warwick-Sir-Bevis-of-Hamptoun-Anglo-Norman-Romance-Richard-C-Ur-de-Lion-Romances-Relating-to-Charlemagne-Roland-and-Ferragus-Sir-Otuel-Sir-Ferumbras-by-George-Ellis.pdf
    • http://loaminoo.linkpc.net/9091092099090093/English-German-Bible---The-Gospels-XX---Matthew-Mark-Luke-amp-John-Basic-English-1949---Elberfelder-1905---Lutherbibel-1545-Parallel-Bible-Halseth-English-Book-935-by-Truthbetold-Ministry.pdf
    • http://loaminoo.linkpc.net/3090097099096091/Batman-Illustrated-by-Neal-Adams-Vol-1-by-Neal-Adams.pdf
    • http://loaminoo.linkpc.net/1094098095099092/Lion-s-Blood-Lion-s-Blood-1-by-Steven-Barnes.pdf
    • http://loaminoo.linkpc.net/1090095097098095/The-Clay-Lion-The-Clay-Lion-1-by-Amalie-Jahn.pdf
    • http://loaminoo.linkpc.net/8092099095091093/Foreign-Language-Study-book-quot-Idiot-quot-Vocabulary-in-English-Explanatory-notes-in-English-Essay-in-English-illustrated-annotated-Foreign-Language-Study-books-Russian-Edition-by-Fyodor-Dostoyevsky.pdf
    • http://loaminoo.linkpc.net/2090092094099092/Marrying-Mr-English-The-English-Brothers-0-5-Blueberry-Lane-0-5-by-Katy-Regnery.pdf
    • http://loaminoo.linkpc.net/2093098093090098/Watching-the-English-the-Hidden-Rules-of-English-Behaviour-by-Kate-Fox.pdf
    • http://loaminoo.linkpc.net/9097097090093/Out-in-the-Dark-Poetry-of-the-First-World-War-in-Context-and-with-Basic-Notes-David-Roberts-by-David---Roberts.pdf
    • http://loaminoo.linkpc.net/

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