Malicious PDF — malware analysis report

Static analysis result for SHA-256 a86d78bb6bf5e61c…

MALICIOUS

PDF

17.0 KB Created: 2019-05-01 17:56:04 +01:00 Authoring application: mPDF 5.7
MD5: 0edef77ccc454593a0fae6ad9d9b5c87 SHA-1: 8cfa5427bcb804228cd526bdfeb0f9e0244b373f SHA-256: a86d78bb6bf5e61cda9874ff8debd99aeaf80d5a463f4ac17f0eae147b00e548
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links pointing to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ML classifier strongly flagged this PDF as malicious. While no scripts were extracted, the sheer volume of links and the heuristic firing suggest a malicious intent to redirect users to potentially harmful content hosted on 'loaminoo.linkpc.net'.

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/6091094094095093/Burke-s-Gamble-Burke-2-by-William-F-Brown.pdf
    • http://loaminoo.linkpc.net/7095095092097094/James-Lee-Burke-A-Dave-Robicheaux-Audio-Collection-A-Stained-White-Radiance-In-The-Electric-Mist-With-Confederate-Dead-Dixie-City-Jam-Burning-Angel-and-Cadillac-Jukebox-by-James-Lee-Burke.pdf
    • http://loaminoo.linkpc.net/1098099099098/My-Awesome-Place-Autobiography-of-Cheryl-Burke-by-Cheryl-Burke.pdf
    • http://loaminoo.linkpc.net/7095095093098091/JAMES-LEE-BURKE-BOOKS-AND-ALL-SHORT-STORIES-CHECKLIST-AND-SUMMARIES---INCLUDES-LATEST-DAVE-ROBICHEAUX---JAMES-LEE-BURKE-SHORT-STORIES-AND-STANDALONE-NOVELS-AND-CHECKLIST-BEST-READING-ORDER-Book-56-by-Avid-Reader.pdf
    • http://loaminoo.linkpc.net/2094091099/The-Ex-by-Alafair-Burke.pdf
    • http://loaminoo.linkpc.net/4090096091095092/Semiosis-by-Sue-Burke.pdf
    • http://loaminoo.linkpc.net/1094098095094093/Gents-4-Ladies-by-Dez-Burke.pdf
    • http://loaminoo.linkpc.net/3094096094098096/Nine-letters-long-by-J-C-Burke.pdf
    • http://loaminoo.linkpc.net/6092093096092/Skin-Deep-by-Dez-Burke.pdf
    • http://loaminoo.linkpc.net/4093099094096099/Burke---Now-and-Then-by-Janet-Philp.pdf
    • http://loaminoo.linkpc.net/3099090092091098/Down-Here-Burke-15-by-Andrew-Vachss.pdf
    • http://loaminoo.linkpc.net/4099095098094090/The-Baby-and-the-Batman-by-H-L-Burke.pdf
    • http://loaminoo.linkpc.net/3094091092092097/Long-Gone-by-Alafair-Burke.pdf
    • http://loaminoo.linkpc.net/6098094091090096/Jamaica-Nights-by-Dez-Burke.pdf
    • http://loaminoo.linkpc.net/2098097096096091/Jesus-Out-to-Sea-by-James-Lee-Burke.pdf
    • http://loaminoo.linkpc.net/2091093096090095/The-Dragon-Dreamer-by-J-S-Burke.pdf
    • http://loaminoo.linkpc.net/2094099098096092/Claimed-by-the-Marine-by-Dez-Burke.pdf
    • http://loaminoo.linkpc.net/2091099096091091/The-Things-We-Promise-by-J-C-Burke.pdf
    • http://loaminoo.linkpc.net/4099092090097094/Long-Gone-by-Alafair-Burke.pdf
    • http://loaminoo.linkpc.net/2095097094097091/Starfish-Sisters-by-J-C-Burke.pdf
    • http://loaminoo.linkpc.net/409009609109509

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