Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca4bfa6bc404bfd3…

MALICIOUS

PDF

17.4 KB Created: 2019-04-30 18:47:21 +01:00 Authoring application: mPDF 5.7
MD5: e2b16551d5d9773ff087616ed8bf5dce SHA-1: 497021ccf6939eb0b5f2458438f88c317565f381 SHA-256: ca4bfa6bc404bfd32dabaf59be855433a7e238fc964f8ca83709ff0b57585c0f
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various book titles. While the URLs themselves are currently flagged as benign, the sheer volume and structure suggest a malicious intent, possibly for SEO manipulation or to host further malicious content. The ML_NYX_PDF_MALICIOUS classifier also strongly indicated maliciousness. 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://loaminoo.linkpc.net/4091097095098092/Midnight-Moon-Rise-of-the-Dark-Angel-2-by-Melody-Anne.pdf
    • http://loaminoo.linkpc.net/3097092093094094/Midnight-Storm-Rise-of-the-Dark-Angel-3-by-Melody-Anne.pdf
    • http://loaminoo.linkpc.net/4094094091097099/The-Dark-Warrior-Series-The-Complete-Collection-Contains-Midnight-s-Master-Midnight-s-Lover-Midnight-s-Seduction-Midnight-s-Warrior-Midnight-s-Kiss-Surrender-novella-Dark-Warriors-by-Donna-Grant.pdf
    • http://loaminoo.linkpc.net/9099097098093/Operation-Dark-Angel-The-Rise-of-Nicolaitanes-The-Apocalypse-1-by-Pam-Funke.pdf
    • http://loaminoo.linkpc.net/3097098091090093/Rise-of-the-Mate-Dark-Side-of-the-Moon-1-by-Jaimee-S-Ghost.pdf
    • http://loaminoo.linkpc.net/2094098099093093/Tempted-by-Midnight-Midnight-Breed-12-5-1001-Dark-Nights-9-by-Lara-Adrian.pdf
    • http://loaminoo.linkpc.net/8094096093091/Dark-Melody-Dark-10-by-Christine-Feehan.pdf
    • http://loaminoo.linkpc.net/3095098091092093/Guardian-Angel-Angel-s-Halo-MC-3-by-Terri-Anne-Browning.pdf
    • http://loaminoo.linkpc.net/3094097093098094/Taken-by-a-Trillionaire-by-Melody-Anne.pdf
    • http://loaminoo.linkpc.net/8094090094095/The-Dark-Side-of-Midnight-Featuring-The-Other-Side-of-Midnight-Rage-of-Angels-Bloodline-by-Sidney-Sheldon.pdf
    • http://loaminoo.linkpc.net/1097091091098094/Burned-Forbidden-4-by-Melody-Anne.pdf
    • http://loaminoo.linkpc.net/3094093093094098/The-Melody-Girls-by-Anne-Douglas.pdf
    • http://loaminoo.linkpc.net/1097093096095093/Submit-Surrender-2-by-Melody-Anne.pdf
    • http://loaminoo.linkpc.net/8092090091094/Seduced-Surrender-3-by-Melody-Anne.pdf
    • http://loaminoo.linkpc.net/2094096091092094/Seduced-Surrender-3-by-Melody-Anne.pdf
    • http://loaminoo.linkpc.net/2098091099090095/Bound-Forbidden-1-by-Melody-Anne.pdf
    • http://loaminoo.linkpc.net/4095093096092090/Dark-Angel-Dark-Angel-1-by-C-J-Heath.pdf
    • http://loaminoo.linkpc.net/4093093097098096/Runaway-Heiress-Billionaire-Bachelors-6-by-Melody-Anne.pdf
    • http://loaminoo.linkpc.net/1094094095091091/The-Tycoon-s-Proposal-Baby-for-the-Billionaire-3-by-Melody-Anne.pdf
    • http://loaminoo.linkpc.net/3099098099096094/Moon-Moon-by-Anne-Kent-Rush.pdf
    • http://loaminoo.linkpc.net/9099097098093/Operation-Dark-Angel-The-Rise-of-Nicolaitanes-The-Apocalypse-1-by-Pam-

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