Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcfaaaf16dd43f6b…

MALICIOUS

PDF

19.0 KB Created: 2019-04-30 03:59:47 +01:00 Authoring application: mPDF 5.7
MD5: de4f579b7a2f15b8013f4c865bb2b12c SHA-1: b3a27c846ffb6f37f17a8415f2781c889c0a40e1 SHA-256: dcfaaaf16dd43f6b1746254f005217e1064d27d87746fc30b6bb477cb586129a
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ML classifier strongly indicated maliciousness. While no scripts were extracted, the PDF structure and link farm suggest a delivery mechanism for further malicious content, potentially related to phishing or malware distribution.

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://loaminoo.linkpc.net/4098092097099097/It-s-Halloween-by-Jack-Prelutsky.pdf
    • http://loaminoo.linkpc.net/2093098094091099/Something-Big-Has-Been-Here-by-Jack-Prelutsky.pdf
    • http://loaminoo.linkpc.net/4095099099090095/Something-Big-Has-Been-Here-by-Jack-Prelutsky.pdf
    • http://loaminoo.linkpc.net/4095096090094099/Circus-by-Jack-Prelutsky.pdf
    • http://loaminoo.linkpc.net/4095099099090091/The-new-kid-on-the-block-by-Jack-Prelutsky.pdf
    • http://loaminoo.linkpc.net/5090091097095098/It-s-Christmas-by-Jack-Prelutsky.pdf
    • http://loaminoo.linkpc.net/3098094095091098/It-s-Christmas-by-Jack-Prelutsky.pdf
    • http://loaminoo.linkpc.net/1098091091092097/The-Dragons-are-Singing-Tonight-by-Jack-Prelutsky.pdf
    • http://loaminoo.linkpc.net/8094099094095091/Brave-Little-Pete-of-Geranium-Street-by-Jack-Prelutsky.pdf
    • http://loaminoo.linkpc.net/1097098092090095/Pizza-Pigs-and-Poetry-How-to-Write-a-Poem-by-Jack-Prelutsky.pdf
    • http://loaminoo.linkpc.net/4095099099090090/The-Beauty-of-the-Beast-Poems-from-the-Animal-Kingdom-by-Jack-Prelutsky.pdf
    • http://loaminoo.linkpc.net/3091093092097093/The-Random-House-Book-of-Poetry-for-Children-by-Jack-Prelutsky.pdf
    • http://loaminoo.linkpc.net/1099094091094093/Halloween-II-by-Jack-Martin.pdf
    • http://loaminoo.linkpc.net/1093095093097/Awful-Ogre-s-Awful-Day-by-Jack-Prelutsky.pdf
    • http://loaminoo.linkpc.net/4098093094091090/Halloween-and-Other-Festivals-of-Death-and-Life-by-Jack-Santino.pdf
    • http://loaminoo.linkpc.net/4094094095097097/Jack-O--Spec-Tales-of-Halloween-and-Fantasy-by-Karen-A-Romanko.pdf
    • http://loaminoo.linkpc.net/4098092099092098/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://loaminoo.linkpc.net/3091093093097092/Halloween-Stories-for-Kids-amp-More-17-Assorted-Stories-to-Read-with-Kids-at-Halloween-Bonus-Halloween-Party-Story-Kids-Story-Bundle-Children-s-Series-Spooky-Scary-Funny-by-Betty-J-Byers.pdf
    • http://loaminoo.linkpc.net/7096096096096091/23-Halloween-Crafts-for-Kids-Homemade-Halloween-Costume-Ideas-and-Spooky-Decor-by-Prime-Publishing.pdf
    • http://loaminoo.linkpc.net/1093095098096/Jack-on-the-Tracks-Four-Seasons-of-Fifth-Grade-Jack-Henry-4-by-Jack-Gantos.pdf
    • http://loaminoo.linkpc.net/4095099099090090/The-Beauty-of-the-Beast-Poems-from-the-Animal-Kingdom

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