Malicious PDF — malware analysis report

Static analysis result for SHA-256 027129ae4cc7b620…

MALICIOUS

PDF

21.4 KB Created: 2019-11-07 11:23:15 +00:00 Authoring application: mPDF 5.7
MD5: 1dd6aaa51027e4a09861a383e3cf1037 SHA-1: 9f837980770eb6156577886f47d0ad74c9b02dc0 SHA-256: 027129ae4cc7b62039ac67421525ce0a0983bab747b3965c0864a17f505701d9
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, masquerading as book downloads. This technique is often used to drive traffic to malicious sites or to distribute further malware. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic identified the link farm pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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/7731737735731738/Ghost-Hunter-s-Guide-to-Haunted-Ohio-by-Chris-Woodyard.pdf
    • http://cefasfese.4pu.com/7731737734736734/Haunted-Ohio-IV-Restless-Spirits-Haunted-Ohio-Series-by-Chris-Woodyard.pdf
    • http://cefasfese.4pu.com/7731737734736739/Spooky-Ohio-13-Traditional-Tales-by-Chris-Woodyard.pdf
    • http://cefasfese.4pu.com/9739733732739737/Haunted-Hocking-A-Ghost-Hunter-s-Guide-to-the-Hocking-Hills-and-Beyond-by-Jannette-Quackenbush.pdf
    • http://cefasfese.4pu.com/8737736737737736/The-Guide-for-Ohio-School-Officers-Containing-All-the-Law-of-Ohio-Applicable-to-School-Officers-with-Forms-and-Suggestions-for-the-Guidance-of-All-School-Officials-by-William-Mahlon-Rockel.pdf
    • http://cefasfese.4pu.com/3736730737737738/Ghost-of-a-Threat-Betty-Boo-Ghost-Hunter-1-by-Beth-Dolgner.pdf
    • http://cefasfese.4pu.com/2738737739738738/Hell-and-Ohio-Stories-of-Southern-Appalachia-by-Chris-Holbrook.pdf
    • http://cefasfese.4pu.com/8737736737738735/The-Guide-for-Ohio-School-Officers-Containing-All-the-Law-of-Ohio-Applicable-to-School-Officers-with-Forms-and-Suggestions-for-the-Guidance-of-All-School-Officials-by-William-M-William-Mahlon-185-Rockel.pdf
    • http://cefasfese.4pu.com/3730733732730737/The-Ghost-Hunter-The-Hunter-1-by-Lori-Brighton.pdf
    • http://cefasfese.4pu.com/3731739730736735/The-Ghost-That-Haunted-Itself-by-Jan-Andrew-Henderson.pdf
    • http://cefasfese.4pu.com/8735736732731/The-Haunted-Dolls-House-and-Other-Ghost-Stories-by-M-R-James.pdf
    • http://cefasfese.4pu.com/3732736737732734/Chance-of-a-Ghost-Haunted-Guesthouse-Mystery-4-by-E-J-Copperman.pdf
    • http://cefasfese.4pu.com/2731735738738733/Winesburg-Ohio-a-group-of-tales-of-Ohio-small-town-life-by-Sherwood-Anderson.pdf
    • http://cefasfese.4pu.com/4738738733736736/The-Ghost-and-the-Dead-Deb-Haunted-Bookshop-Mystery-2-by-Alice-Kimberly.pdf
    • http://cefasfese.4pu.com/2732738738734734/The-Haunted-Graveyard-and-Other-True-Ghost-Stories-by-Allan-Zullo.pdf
    • http://cefasfese.4pu.com/7731737737730732/Guide-to-Ohio-Vegetable-Gardening-by-James-Fizzell.pdf
    • http://cefasfese.4pu.com/1730736738731737734/Twiggy-and-Stick-s-Haunted-Adventure-by-Chris-Dunst.pdf
    • http://cefasfese.4pu.com/1739734734737736/On-Haunted-Ground-The-Green-Ghost-and-Other-Spirits-of-Cemetery-Road-by-Lisa-Rogers.pdf
    • http://cefasfese.4pu.com/1739734733732738/Haunted-Homeland-A-Definitive-Collection-of-North-American-Ghost-Stories-by-Michael-Norman.pdf
    • http://cefasfese.4pu.com/2730735736730734/Power-Shift-Hunting-the-Bounty-Hunter-beneath-Haunted-Alaska-Skies-by-Calinda-B-.pdf