Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccb1993e1033ea79…

MALICIOUS

PDF

22.2 KB Created: 2019-04-30 02:44:52 +01:00 Authoring application: mPDF 5.7
MD5: 393762e82dab6434cdf3f874b9bd4dc7 SHA-1: bbb75026c40d8717036e1de9c197fa5e200594be SHA-256: ccb1993e1033ea79dc9ff8b8f9ba14f3e22d865d405596647f64a39c583ba3e2
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. While the document body is heavily corrupted, the presence of these links suggests a tactic to manipulate search engine results or to distribute further malicious content. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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://seasasac.lflin
    • http://seasasac.lflinkup.com/2da8da2da3da7/Sea-Glass-Golden-Mountain-Chronicles-8-by-Laurence-Yep.pdf
    • http://seasasac.lflinkup.com/2da8da1da4da1/Dragon-s-Gate-Golden-Mountain-Chronicles-3-by-Laurence-Yep.pdf
    • http://seasasac.lflinkup.com/3da1da9da7da2da0/The-Serpent-s-Children-Golden-Mountain-Chronicles-1-by-Laurence-Yep.pdf
    • http://seasasac.lflinkup.com/5da8da8da7da9/The-Glass-Mountain-by-Sharon-Sparling.pdf
    • http://seasasac.lflinkup.com/4da2da9da4da3da7/The-Glass-Mountain-by-Martina-Evans.pdf
    • http://seasasac.lflinkup.com/4da8da6da9da4da9/Bittersweet-Chronicles-Pax-II-Bittersweet-Chronicles-2-by-Selena-Laurence.pdf
    • http://seasasac.lflinkup.com/8da0da4da7da4/The-Quilt-That-Walked-to-Golden-Women-and-Quilts-in-the-Mountain-West---From-the-Overland-Trail-to-Contemporary-Colorado-by-Sandra-Dallas.pdf
    • http://seasasac.lflinkup.com/1da4da7da4da3da9/Rowena-s-Key-The-Golden-Key-Chronicles-1-by-A-J-Nuest.pdf
    • http://seasasac.lflinkup.com/1da0da0da5da9da5da8/Mountain-of-Stars-The-Chronicles-of-Evrion-3-by-Mir-Foote.pdf
    • http://seasasac.lflinkup.com/2da3da2da9da5da1/Breakfire-s-Glass-The-Zhakieve-Chronicles-2-by-A-M-Valenza.pdf
    • http://seasasac.lflinkup.com/1da2da6da3da3da3/The-Golden-One-LucasFilm-s-Alien-Chronicles-1-by-Deborah-Chester.pdf
    • http://seasasac.lflinkup.com/3da8da4da6da6da8/The-Golden-Spider-The-Elemental-Web-Chronicles-1-by-Anne-Renwick.pdf
    • http://seasasac.lflinkup.com/3da0da2da7da1/A-Thousand-Glass-Flowers-The-Chronicles-of-Eirie-3-by-Prue-Batten.pdf
    • http://seasasac.lflinkup.com/5da9da8da7da9da6/The-Order-of-the-Golden-Dragon-The-Grimm-Chronicles-6-by-Isabella-Fontaine.pdf
    • http://seasasac.lflinkup.com/7da1da4da6da8da5/The-Golden-Dawn-Chronicles-of-the-Floating-Continent-1-by-Billy-Wong.pdf
    • http://seasasac.lflinkup.com/5da8da4da3da9da4/Mountain-Feist-Guide-Mountain-Feist-Guide-Includes-Mountain-Feist-Training-Diet-Socializing-Care-Grooming-Breeding-and-More-by-Blake-Nolan.pdf
    • http://seasasac.lflinkup.com/8da4da8da4da0da7/Valkyria---Games-Valkyria-Chronicles-Valkyria-Chronicles-2-Valkyria-Chronicles-3-Valkyria-Chronicles-Valkyria-Chronicles-2-Valkyria-Chronicles-3-Action-Points-Challenges-of-the-Edy-Detachment-Class-Change-System-Col-Nonnenkof-by-Source-Wikia.pdf
    • http://seasasac.lflinkup.com/6da9da1da4da3da1/The-Works-and-Life-of-Laurence-Sterne-The-Life-and-Opinions-of-Tristram-Shandy-Gentleman-by-Laurence-Sterne.pdf
    • http://seasasac.lflinkup.com/4da2da4da0da9da5/Mountain-to-Mountain-A-Journey-of-Adventure-and-Activism-for-the-Women-of-Afghanistan-by-Shannon-Galpin.pdf
    • http://seasasac.lflinkup.com/1da8da4da8da8da5/Master-of-the-Mountain-Mountain-Masters-amp-Dark-Haven-1-by-Cherise-Sinclair.pdf