Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7c8d5e3a5c7d420…

MALICIOUS

PDF

22.8 KB Created: 2019-05-02 06:51:37 +01:00 Authoring application: mPDF 5.7 First seen: 2020-12-28
MD5: 1529aaf773c6d3c994e34200d9d093f6 SHA-1: a0352a4dab30fefe308389b843f6c00cc8000602 SHA-256: b7c8d5e3a5c7d420c4a38d0d55f6be35beb5e5f00195e8ed228d7c3d11096b5d
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links to external websites, identified by the PDF_SEO_LINK_FARM heuristic. While many of these URLs are marked as confirmed benign, the sheer volume and the nature of the heuristic suggest an attempt to manipulate search engine results or redirect users to potentially malicious content. The ML_NYX_PDF_MALICIOUS classifier also flagged this sample with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9726

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/1730739735732730/All-The-Heroes-Are-Dead-Book-One-of-the-Fallen-Primarchs-Series-by-T-S-Brothers.pdf In PDF document text
    • http://cefasfese.4pu.com/2732731739739732/The-Fallen-Series-Trilogy-Fallen-1-3-by-Lauren-Kate.pdfIn PDF document text
    • http://cefasfese.4pu.com/1730735733736733738/Forever-Sixteen-The-Haney-Brothers-Series-Book-1-by-J-S-Wilsoncroft.pdfIn PDF document text
    • http://cefasfese.4pu.com/1737730739737737/Bliss-Strand-Brothers-Series-Book-4-Epilogue-Novella-by-Lora-Ann.pdfIn PDF document text
    • http://cefasfese.4pu.com/1737736734733735/The-Dead-War-Series-Book-1-by-George-L-Cook-III.pdfIn PDF document text
    • http://cefasfese.4pu.com/2733736732731735/Fallen-Heroes-by-Barry-Nugent.pdfIn PDF document text
    • http://cefasfese.4pu.com/2733732735730737/Fallen-Warrior-Fallen-Trilogy-book-3-by-Tess-Williams.pdfIn PDF document text
    • http://cefasfese.4pu.com/1732737732736735/Robert-To-accompany-the-Fallen-Angel-series-Fallen-Angel-0-5-by-Tracie-Podger.pdfIn PDF document text
    • http://cefasfese.4pu.com/1730738730736737/Flesh-Code-Vol-I-Book-One-of-the-Dead-Education-s-Army-Novella-series-by-Alan-Dale.pdfIn PDF document text
    • http://cefasfese.4pu.com/1736731738733734/The-Great-Comic-Book-Heroes-The-Origins-and-Early-Adventures-of-the-Classic-Super-Heroes-of-the-Comic-Books-by-Jules-Feiffer.pdfIn PDF document text
    • http://cefasfese.4pu.com/1734738730730737/The-Fallen-Crest-Series-Fallen-Crest-High-0-5-3-by-Tijan.pdfIn PDF document text
    • http://cefasfese.4pu.com/4736733731730739/Fallen-Crest-Forever-Fallen-Crest-Series-7-by-Tijan.pdfIn PDF document text
    • http://cefasfese.4pu.com/7735730732737738/Shakespeare-Erotic-Fantasy-Sex-Scenes-With-Nude-Photos-Books-From-The-7-Book-Series-For-Romeo-amp-Juliet-and-Mark-Anthony-amp-Cleopatra-Vampires-Fallen-Angels-Stance-Dr-Romance-Free-Love-Pen-Names-by-Cum-Stance.pdfIn PDF document text
    • http://cefasfese.4pu.com/7734738735735731/Dune-Book-Series-Legends-Of-Dune-Dune-Short-Stories-Heroes-Of-Dune-Prelude-To-Dune-by-Brian-Herbert.pdfIn PDF document text
    • http://cefasfese.4pu.com/3734732736734730/A-Song-for-Us-Fallen-Tuesday-2-Brothers-of-Rock-7-by-Karolyn-James.pdfIn PDF document text
    • http://cefasfese.4pu.com/3734732736733738/A-Road-to-Let-Go-Fallen-Tuesday-4-Brothers-of-Rock-9-by-Karolyn-James.pdfIn PDF document text
    • http://cefasfese.4pu.com/3734732736733737/A-Time-to-Move-On-Fallen-Tuesday-5-Brothers-of-Rock-10-by-Karolyn-James.pdfIn PDF document text
    • http://cefasfese.4pu.com/3734732736733739/A-Sound-like-Hope-Fallen-Tuesday-3-Brothers-of-Rock-8-by-Karolyn-James.pdfIn PDF document text
    • http://cefasfese.4pu.com/2734735738736731/Child-of-a-Dead-God-Noble-Dead-Series-1-6-by-Barb-Hendee.pdfIn PDF document text
    • http://cefasfese.4pu.com/7735735733738733/James-Lee-Burke-Series-Reading-Order-amp-Checklist-Series-List-in-Order---Dave-Robicheaux-Series-Hackberry-Holland-Series-amp-All-Other-Books-Listabook-Series-Order-Book-29-by-Listabook.pdfIn PDF document text

Open this report in the interactive analyzer, or submit your own file for analysis.