Malicious PDF — malware analysis report

Static analysis result for SHA-256 270ec48feb389a89…

MALICIOUS

PDF

18.8 KB Created: 2019-05-01 19:28:55 +01:00 Authoring application: mPDF 5.7
MD5: 008c4a8a5867a4c1f01a54609ed905e9 SHA-1: 6b1f4b17ba633de0c333f2afcac330fe3a3b6acf SHA-256: 270ec48feb389a897f44f0747d689668994b3562c9d87aa6c80b028fef01efdf
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external websites, identified as a PDF_SEO_LINK_FARM heuristic. While the ML classifier strongly flagged this PDF as malicious, the specific intent beyond link farming is unclear due to the lack of executable scripts or exploitable content in the provided excerpts. The primary IOCs are the numerous URLs hosted on loaminoo.linkpc.net.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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/3094090092098092/Caroline-Chisholm-An-Irresistible-Force---How-Caroline-Chisholm-Helped-Shape-a-Nation-by-Sarah-Goldman.pdf
    • http://loaminoo.linkpc.net/4091090090096099/An-Air-of-Treason-Sir-Robert-Carey-6-by-P-F-Chisholm.pdf
    • http://loaminoo.linkpc.net/4092093095096094/Branded-Whitehorse-MT-Chisholm-Cattle-Co-1-by-B-J-Daniels.pdf
    • http://loaminoo.linkpc.net/7097096095095097/Wrangled-Whitehorse-MT-Chisholm-Cattle-Co-6-by-B-J-Daniels.pdf
    • http://loaminoo.linkpc.net/4091090095093096/A-Season-of-Knives-Sir-Robert-Carey-2-by-P-F-Chisholm.pdf
    • http://loaminoo.linkpc.net/4091090096095099/A-Surfeit-of-Guns-Sir-Robert-Carey-3-by-P-F-Chisholm.pdf
    • http://loaminoo.linkpc.net/1098097091090/Landscapes-of-the-Heart-by-Cathy-Cummings-Chisholm.pdf
    • http://loaminoo.linkpc.net/1091090095096097099/Georgiana-Darcy-Matchmaker-by-Bronwen-Chisholm.pdf
    • http://loaminoo.linkpc.net/7097096095095094/Rustled-Whitehorse-MT-Chisholm-Cattle-Co-3-by-B-J-Daniels.pdf
    • http://loaminoo.linkpc.net/2098095096093099/Caroline-Takes-a-Chance-American-Girls-Caroline-4-by-Kathleen-Ernst.pdf
    • http://loaminoo.linkpc.net/1091096098099095/Meet-Caroline-American-Girls-Caroline-1-by-Kathleen-Ernst.pdf
    • http://loaminoo.linkpc.net/5091097099097097/Shirley-Chisholm-Teacher-And-Congresswoman-by-Catherine-Scheader.pdf
    • http://loaminoo.linkpc.net/9095096093092098/The-Vampire-Diaries---Supernatural-Anna-Ben-McKittrick-Bethanne-Bonnie-Bennett-Bonnie-McCullough-Brady-Bree-Caroline-Forbes-Caroline-Forbes-Cody-Webber-Damon-Salvatore-Damon-Salvatore-Damon-and-Elijah-Elena-Caroline-and-Bonnie-Elena-Gilber-by-Source-Wikia.pdf
    • http://loaminoo.linkpc.net/2091097098098098/Aristocrats-Caroline-Emily-Louisa-and-Sarah-Lennox-1740---1832-by-Stella-Tillyard.pdf
    • http://loaminoo.linkpc.net/9090093092096/Aristocrats-Caroline-Emily-Louisa-and-Sarah-Lennox-1740---1832-by-Stella-Tillyard.pdf
    • http://loaminoo.linkpc.net/3090098099093099/Bacon-Nation-125-Irresistible-Recipes-by-Peter-Kaminsky.pdf
    • http://loaminoo.linkpc.net/2092092090090097/Lie-by-Caroline-Bock.pdf
    • http://loaminoo.linkpc.net/5091098095091/You-by-Caroline-Kepnes.pdf
    • http://loaminoo.linkpc.net/1095090097096096/When-the-Sky-Fell-Apart-by-Caroline-Lea.pdf
    • http://loaminoo.linkpc.net/1092099095093097/You-You-1-by-Caroline-Kepnes.pdf
    • http://loaminoo.linkpc.net/2098095096093099/Caroline-Takes-a-Chance-Americ

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