Malicious PDF — malware analysis report

Static analysis result for SHA-256 b240c54e558de8ab…

MALICIOUS

PDF

18.1 KB Created: 2019-04-30 02:38:42 +01:00 Authoring application: mPDF 5.7
MD5: 255a27132588d625f6b7433a42b38328 SHA-1: 63a8333d09cf0685cd8471a52c7193fa062c8709 SHA-256: b240c54e558de8abce798b2d985f0b3bd385144581332bab6a81d2e4dfeff36a
90 Risk Score

Malware Insights

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

The PDF file exhibits a critical heuristic firing for a link farm, containing numerous embedded URLs. The ML classifier also flagged the document as malicious with high confidence. While no scripts were extracted, the sheer volume of external links suggests an attempt to manipulate search engine results or redirect users to malicious content. The primary attack pattern involves leveraging these links for a malicious purpose, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9931

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
    • http://loaminoo.linkpc.net/1091095096095099090/Forging-Constance-Forging-Constance-1-by-William-Stadler.pdf
    • http://loaminoo.linkpc.net/2096099094094096/Ravenstoke-Forging-the-Way-by-Stephen-Cool.pdf
    • http://loaminoo.linkpc.net/2099090096094092/Forging-Hephaestus-by-Drew-Hayes.pdf
    • http://loaminoo.linkpc.net/8095094095090097/Forging-Zero-The-Legend-of-ZERO-1-by-Sara-King.pdf
    • http://loaminoo.linkpc.net/7093095098098/Forging-Zero-The-Legend-of-ZERO-1-by-Sara-King.pdf
    • http://loaminoo.linkpc.net/8099097094093097/The-Forge-Forging-of-a-Rebel-1-by-Arturo-Barea.pdf
    • http://loaminoo.linkpc.net/7090093096093/Millennium-The-End-of-the-World-and-the-Forging-of-Christendom-by-Tom-Holland.pdf
    • http://loaminoo.linkpc.net/5091092095099097/Forging-Diaspora-by-Frank-Andre-Guridy.pdf
    • http://loaminoo.linkpc.net/3090092098090097/Forging-the-Future-Change-of-Heart-5-by-Mary-Calmes.pdf
    • http://loaminoo.linkpc.net/8096094094099092/Forging-Freedom-The-Life-of-Cerf-Berr-of-M-Delsheim-by-Margaret-R-O-39-Leary.pdf
    • http://loaminoo.linkpc.net/3099095090091094/A-Great-and-Terrible-King-Edward-I-and-the-Forging-of-Britain-by-Marc-Morris.pdf
    • http://loaminoo.linkpc.net/4099099097094093/Forging-Gay-Identities-Organizing-Sexuality-in-San-Francisco-1950-1994-by-Elizabeth-A-Armstrong.pdf
    • http://loaminoo.linkpc.net/5090090091095/The-Forging-of-a-Black-Community-Seattle-s-Central-District-from-1870-Through-the-Civil-Rights-Era-by-Quintard-Taylor.pdf
    • http://loaminoo.linkpc.net/8092095098095090/Our-Lives-Our-Fortunes-and-Our-Sacred-Honor-The-Forging-of-American-Independence-1774-1776-by-Richard-Beeman.pdf
    • http://loaminoo.linkpc.net/5098096097090097/Blacksmith-Shop-Practice-Arrangement-and-Equipment-Forging-of-Hooks-and-Chains-Welding-by-James-Cran.pdf
    • http://loaminoo.linkpc.net/4094095090092092/Here-and-Now-by-Constance-O-39-Day-Flannery.pdf
    • http://loaminoo.linkpc.net/1093096090093091/The-Reb-and-the-Redcoats-by-Constance-Savery.pdf
    • http://loaminoo.linkpc.net/1091092093095091/Beyond-Ugly-by-Constance-Briscoe.pdf
    • http://loaminoo.linkpc.net/1094091095090094/The-Silver-Cup-by-Constance-Leeds.pdf
    • http://loaminoo.linkpc.net/4093099093093093/Bewitched-by-Constance-O-39-Day-Flannery.pdf

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