Malicious PDF — malware analysis report

Static analysis result for SHA-256 55dfc85773ca704c…

MALICIOUS

PDF

20.4 KB Created: 2019-04-30 05:11:41 +01:00 Authoring application: mPDF 5.7
MD5: e2f5a1df0492d0da356751cf8a2ed1fa SHA-1: d4103d85767250a82064f7827db9abf2d8c2ad37 SHA-256: 55dfc85773ca704cb89031e0e0e3cf876a983aa6470609937b43d73c554dea8f
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified as a link farm, which is a common technique for SEO manipulation or distributing 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 sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9904

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/1095090097093094/Lay-Down-My-Sword-And-Shield-Hackberry-Holland-1-by-James-Lee-Burke.pdf
    • http://loaminoo.linkpc.net/4098094095095/Rain-Gods-Hackberry-Holland-2-by-James-Lee-Burke.pdf
    • http://loaminoo.linkpc.net/2092099090/House-of-the-Rising-Sun-Hackberry-Holland-4-by-James-Lee-Burke.pdf
    • http://loaminoo.linkpc.net/3095092091097090/Rain-Gods-Hackberry-Holland-2-by-James-Lee-Burke.pdf
    • http://loaminoo.linkpc.net/1093094093097092/Heartwood-Billy-Bob-Holland-2-by-James-Lee-Burke.pdf
    • http://loaminoo.linkpc.net/5091093099094/Wayfaring-Stranger-Holland-Family-Saga-1-by-James-Lee-Burke.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/5091098095090090/Shield-and-Sword-The-United-States-Navy-and-the-Persian-Gulf-War-by-Edward-J-Marolda.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/3092095091097096/Crown-of-Earth-The-Shield-Sword-and-Crown-3-by-Hilari-Bell.pdf
    • http://loaminoo.linkpc.net/3098094090096093/The-Axe-the-Shield-and-the-Halig-Rood-Tales-of-Bowdyn-2-by-James-M-Hockey.pdf
    • http://loaminoo.linkpc.net/3098093093094099/The-Battle-of-Britain-by-James-Holland.pdf
    • http://loaminoo.linkpc.net/4090099090092093/The-Odin-Mission-Sergeant-Jack-Tanner-1-by-James-Holland.pdf
    • http://loaminoo.linkpc.net/1090092096093093093/The-Odin-Mission-Sergeant-Jack-Tanner-1-by-James-Holland.pdf
    • http://loaminoo.linkpc.net/2098097096096091/Jesus-Out-to-Sea-by-James-Lee-Burke.pdf
    • http://loaminoo.linkpc.net/2092099090096/W-O-K-s-Weird-Wacky-Wonderful-World-The-Art-of-William-O-Keefe-by-James-R-Holland.pdf
    • http://loaminoo.linkpc.net/3096092096093094/The-Convict-and-Other-Stories-by-James-Lee-Burke.pdf
    • http://loaminoo.linkpc.net/5091096096098091/Jan-van-Naaldwijk-s-Chronicles-of-Holland-Continuity-and-Transformation-in-the-Historical-Tradition-of-Holland-during-the-Early-Sixteenth-Century-by-Sjoerd-Levelt.pdf
    • http://loaminoo.linkpc.net/8091097097090094/Holland-1000-Things-About-Holland-Set-by-Jesse-Goossens.pdf
    • http://loaminoo.linkpc.net/1094099098093096/White-Doves-at-Morning-by-James-Lee-Burke.pdf
    • http://loaminoo.linkpc.net/5091098095090090/Shield-and-Sword-The-United-States-Navy-and-the-Persian-Gulf-War-by-Edward-J-M