Malicious PDF — malware analysis report

Static analysis result for SHA-256 40392e1c5738f79e…

MALICIOUS

PDF

22.7 KB Created: 2019-05-02 17:35:18 +01:00 Authoring application: mPDF 5.7
MD5: f3f13b8386bb3e1d40f399688be3f5e4 SHA-1: 41a0b4ccdd775c8e160a686d59e2ec485a3a4e2b SHA-256: 40392e1c5738f79ebd6b708db6c295304be23b7c1870c1bba79f5863950c9987
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or redirection scheme. The ML classifier also flagged the document as malicious with high confidence. While no scripts were extracted, the sheer volume of links and the nature of the heuristic indicate a malicious intent to lure users to external, potentially harmful, content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9784

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/3737735733730732/Internet-Dating-King-s-Diaries-Life-Dating-and-Love-by-Clive-Worth.pdf
    • http://cefasfese.4pu.com/7737731733735738/Housewife-s-Secrets-and-Other-Erotic-Stories-Six-Slut-Wives-and-Rough-Sex-Erotic-Short-Stories-by-Erotique-Stories.pdf
    • http://cefasfese.4pu.com/3731738738736736/Playing-the-Not-Dating-Game-Young-Love-Erotic-Romance-by-Sandra-Ross.pdf
    • http://cefasfese.4pu.com/3730730735735734/Her-Accidental-Lover-and-Other-Erotic-Tales-by-Jasmine-R-Fields.pdf
    • http://cefasfese.4pu.com/7737731733735739/Hot-Wild-and-Horny-Six-Slut-Wives-Rough-Sex-and-Lesbian-Erotic-Short-Stories-by-Erotique-Stories.pdf
    • http://cefasfese.4pu.com/7737731733736730/Rough-Rides-amp-Soft-Curves-Ten-Slut-Wives-and-Group-Sex-Erotic-Short-Stories-by-Erotique-Stories.pdf
    • http://cefasfese.4pu.com/5732737736733737/Adventure-Stories-by-Clive-King.pdf
    • http://cefasfese.4pu.com/2737737738734733/Missionary-Dating-and-Other-Stories-by-Sandra-Hutchison.pdf
    • http://cefasfese.4pu.com/7734732737735738/P-O-F-N-Outrageous-Stories-of-Online-Dating-by-Aisha-Zahir.pdf
    • http://cefasfese.4pu.com/2734736730739735/The-Dating-Game-Short-Stories-About-the-Search-for-Mr-Right-by-Princess-F-L-Gooden.pdf
    • http://cefasfese.4pu.com/5739731738730732/The-Big-Book-of-Serial-Killers-150-Serial-Killer-Files-of-the-World-s-Worst-Murderers-by-Jack-Rosewood.pdf
    • http://cefasfese.4pu.com/1730732737733732735/Internet-Password-Organizer-An-Alphabetical-Journal-to-Organize-Internet-Log-In-Details---Red-Cover-by-Anneline-Sophia.pdf
    • http://cefasfese.4pu.com/1731733734733733730/Anything-Worth-Doing-Is-Worth-Doing-Badly-My-Perfectionism-in-37-Varieties-by-Paschal-Bernard-Baute.pdf
    • http://cefasfese.4pu.com/1734735731738738/A-Game-Worth-Watching-Worth-Series-1-by-Samantha-Gudger.pdf
    • http://cefasfese.4pu.com/2737739737735737/When-Nashville-Bled-the-untold-stories-of-serial-killer-Paul-Dennis-Reid-by-Judith-A-Yates.pdf
    • http://cefasfese.4pu.com/1736732733734732/The-Honest-Book-of-International-Dating-Smart-Dating-Strategies-for-Men-Win-the-Heart-of-a-Woman-of-Your-Dreams-1-by-Sahara-Sanders.pdf
    • http://cefasfese.4pu.com/3732733733736735/Bad-Boy-Erotica-5-in-1-Bad-Boy-Erotic-Short-Stories-by-Kathleen-Hope.pdf
    • http://cefasfese.4pu.com/8738739737730/Lesbian-Lust-Erotic-Stories-by-Sacchi-Green.pdf
    • http://cefasfese.4pu.com/1730739737735738736/Unruly-Appetites-Erotic-Stories-by-Hanne-Blank.pdf
    • http://cefasfese.4pu.com/3738735733734735/Bitten-Dark-Erotic-Stories-by-Susie-Bright.pdf
    • http://cefasfese.4pu.com/7737731733736730/Rough-Rides-amp-Soft-Curves-Ten-Slut-Wives-and-Group-Sex-Erotic-Short-Stories-by-Erotique-Stori