Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6a823c76dcb45b9…

MALICIOUS

PDF

19.7 KB Created: 2019-05-03 05:03:31 +01:00 Authoring application: mPDF 5.7
MD5: 0b6591fc48e5e55fd8389a289c91348b SHA-1: 41d1c69eb46050864d0f6224c4bb5c9fe0583717 SHA-256: a6a823c76dcb45b9f3f72280e8b738f0a6bc0949930a58f6322073df5f521059
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, and the document body was heavily obfuscated, preventing a more detailed analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

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/1097095095093/Heaven-Knows-Who-by-Christianna-Brand.pdf
    • http://loaminoo.linkpc.net/1090090090090099097/Nurse-Matilda-Goes-to-Hospital-by-Christianna-Brand.pdf
    • http://loaminoo.linkpc.net/4098095096093097/Death-in-High-Heels-by-Christianna-Brand.pdf
    • http://loaminoo.linkpc.net/3097099090099090/Green-for-Danger-Inspector-Cockrill-2-by-Christianna-Brand.pdf
    • http://loaminoo.linkpc.net/4098094097098096/The-Spotted-Cat-and-Other-Mysteries-from-Inspector-Cockrill-s-Casebook-by-Christianna-Brand.pdf
    • http://loaminoo.linkpc.net/9092092090099098/A-Brand-New-Day-with-Mouse-and-Mole-by-Wong-Herbert-Yee.pdf
    • http://loaminoo.linkpc.net/1090098093099092095/United-We-Brand-How-to-Create-a-Cohesive-Brand-That-s-Seen-Heard-and-Remembered-by-Mike-Moser.pdf
    • http://loaminoo.linkpc.net/4092090096090091/Star-Western-May-1934-featuring-Lawman-s-Heart-by-Max-Brand-by-Max-Brand.pdf
    • http://loaminoo.linkpc.net/4099098092098095/A-New-Brand-World-Eight-Principles-for-Achieving-Brand-Leadership-in-the-Twenty-First-Century-by-Scott-Bedbury.pdf
    • http://loaminoo.linkpc.net/1091097095090098099/Brand-Delusions-Exploding-the-myths-and-helping-you-improve-your-Brand---professionally-and-personally-by-Bill-Leider.pdf
    • http://loaminoo.linkpc.net/5095094091090094/No-B-S-Guide-to-Brand-Building-by-Direct-Response-The-Ultimate-No-Holds-Barred-Plan-to-Creating-and-Profiting-from-a-Powerful-Brand-Without-Buying-It-by-Dan-S-Kennedy.pdf
    • http://loaminoo.linkpc.net/1090099097099090090/Bernelly-amp-Harriet-The-Country-Mouse-and-the-City-Mouse-by-Elizabeth-Dahlie.pdf
    • http://loaminoo.linkpc.net/2095094097095096/The-Country-Mouse-and-the-City-Mouse-The-Fox-and-the-Crow-The-Dog-and-His-Bone-by-Patricia-M-Scarry.pdf
    • http://loaminoo.linkpc.net/4099096092098091/The-Mouse-on-Wall-Street-The-Mouse-That-Roared-3-by-Leonard-Wibberley.pdf
    • http://loaminoo.linkpc.net/4096095093099094/The-Mouse-on-the-Moon-The-Mouse-That-Roared-2-by-Leonard-Wibberley.pdf
    • http://loaminoo.linkpc.net/4092097094098098/The-Town-Mouse-and-the-Country-Mouse-by-Ellen-Schecter.pdf
    • http://loaminoo.linkpc.net/4097094091098/The-Mouse-and-the-Motorcycle-Ralph-S-Mouse-1-by-Beverly-Cleary.pdf
    • http://loaminoo.linkpc.net/3098090099095096/The-Town-Mouse-and-the-Country-Mouse-by-Helen-Ward.pdf
    • http://loaminoo.linkpc.net/3096095090096091/Town-Mouse-Country-Mouse-by-Jan-Brett.pdf
    • http://loaminoo.linkpc.net/3090091092098099/The-Mouse-The-Mouse-1-by-Lauretta-Hignett.pdf
    • http://loaminoo.linkpc.net/4099098092098095/A-New-Brand-World-Eight-Principles-for-Achieving-Brand-Leadership-in-the-Twenty-First-Century-by-Scott

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