Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d254f052d57f785…

MALICIOUS

PDF

18.9 KB Created: 2019-05-05 05:01:54 +01:00 Authoring application: mPDF 5.7
MD5: 9ded22278ba03e98579949959aa766eb SHA-1: 2aebdfd52c91e6ff344287606293004e7ab547cd SHA-256: 8d254f052d57f78549ec1a5baf31a2a499c32d108881ebd0ce4553be3e29162f
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, as indicated by the PDF_SEO_LINK_FARM heuristic. While many of these links were classified as benign, the sheer volume and the nature of the heuristic suggest a malicious intent, possibly for SEO manipulation or to distribute further malicious content. No scripts were extracted from this sample, and the document body was truncated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

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://cefasfese.4pu.com/3738731737730730/Halloween-Mice-by-Bethany-Roberts.pdf
    • http://cefasfese.4pu.com/7735730733738731/Cliffsnotes-on-Steinbeck-s-of-Mice-and-Men-by-James-Lamar-Roberts.pdf
    • http://cefasfese.4pu.com/7730736734737736/May-Belle-and-the-Ogre-by-Bethany-Roberts.pdf
    • http://cefasfese.4pu.com/4738732739732738/Halloween-4-The-Return-Of-Michael-Myers-Horror-Film-Sequel-Halloween-Franchise-Dwight-H-Little-Alan-B-Mc-Elroy-Michael-Myers-Halloween-Coma-Danielle-Harris-Laurie-Strode-Samuel-Loomis-by-Frederic-P-Miller.pdf
    • http://cefasfese.4pu.com/4738732738730731/Timeless-Halloween-Collectibles-1920-to-1949-a-Halloween-Reference-Book-from-the-Beistle-Company-Archive-with-Price-Guide-by-Claire-M-Lavin.pdf
    • http://cefasfese.4pu.com/9733731739733734/Of-Mice-amp-Men---Character-quotes-and-analysis---Curley-s-Wife-Concise-set-of-character-logs-and-analysis---Curley-s-Wife-Of-Mice-amp-Men-Character-Logs-Book-5-by-BigSmallBubble-Publishing.pdf
    • http://cefasfese.4pu.com/6738735735731734/Bundle-F-te-des-m-res---Nora-Roberts-La-saga-des-O-Hurley-by-Nora-Roberts.pdf
    • http://cefasfese.4pu.com/1730731731730736737/Of-Mice-and-Men-by-Martin-Winks.pdf
    • http://cefasfese.4pu.com/1738735733733733/Ten-Little-Mice-by-Joyce-Dunbar.pdf
    • http://cefasfese.4pu.com/4731730731735730/Mice-In-Men-by-Anirban-Bose.pdf
    • http://cefasfese.4pu.com/5733730739732739/Of-Mice-and-Men-by-John-Steinbeck.pdf
    • http://cefasfese.4pu.com/5739734734733737/Of-Mice-and-Men-by-John-Steinbeck.pdf
    • http://cefasfese.4pu.com/5739738732734737/Of-Mice-and-Men-by-John-Steinbeck.pdf
    • http://cefasfese.4pu.com/3735736734739737/Mice-by-Gordon-Reece.pdf
    • http://cefasfese.4pu.com/4730734736731736/Of-Mice-and-Men-by-John-Steinbeck.pdf
    • http://cefasfese.4pu.com/3733738738732735/The-Fate-of-Mice-by-Susan-Palwick.pdf
    • http://cefasfese.4pu.com/9730739735733733/The-Hanukkah-Mice-by-Ronne-Randall.pdf
    • http://cefasfese.4pu.com/3731736739735739/Three-Blind-Mice-and-Other-Stories-by-Agatha-Christie.pdf
    • http://cefasfese.4pu.com/3739733739737738/Ten-Dead-Mice-See-How-They-Died-by-Sharon-Delarose.pdf
    • http://cefasfese.4pu.com/4730731732731736/The-Mailbox-Mice-Mystery-by-Julie-Mahr.pdf

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