Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb2ad201b1e6b580…

MALICIOUS

PDF

52.7 KB Created: 2020-03-30 10:12:00 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 33eb829726b8341bbe2607b98144785f SHA-1: 1b9b0b2f7901acb7a66dedce64860a7fed2a30fd SHA-256: eb2ad201b1e6b5800b85b2ae5d1d8e7d021f375e5e1fb49012c3d777d4d73ba2
94 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a link farm. The primary purpose appears to be SEO manipulation or directing users to a large collection of other PDF files hosted across various domains. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the suspicious link structure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://anarchism.jesusradicals.com/uploads/1/3/1/4/131453259/131453259.html#asociaci%C3%B3n+para+la+recuperaci%C3%B3n+de+la+memoria+hist%C3%B3rica+espa%C3%B1a
    • http://fayettevilleconcreteasphaltpavers.com/uploads/1/3/0/6/130639231/07655bd85b998e.pdf
    • http://gwbooster.org/uploads/1/3/1/1/131164120/lomugekaranekel_rimolafedirifod.pdf
    • http://sarafitzpatrickbeauty.com/uploads/1/3/0/2/130288720/nezidademapu_janope_komekamaniri_difejem.pdf
    • http://lilibugsshop.com/uploads/1/3/0/7/130776898/xexapaxuxuwupu.pdf
    • http://sacrophonia.com/uploads/1/3/1/3/131379253/ritipiburubos.pdf
    • http://bridgemillfinancing.com/uploads/1/3/0/5/130544134/8534918.pdf
    • http://puffymediagroup.com/uploads/1/3/0/4/130491063/mebulananewexogo.pdf
    • http://johnsonequine.net/uploads/1/3/0/8/130874231/rowavu.pdf
    • http://getwellsoonllc.com/uploads/1/3/0/5/130588795/lukuk.pdf
    • http://iohannespontes.com/uploads/1/3/1/0/131069897/4149195.pdf
    • http://calgarybrokerageproposal.com/uploads/1/3/0/5/130539676/gerizozisezezeg_bavek_xedefivinawap.pdf
    • http://cryptixpcs.com/uploads/1/3/0/5/130551258/1ea473b07375.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008a42.bin
dc2da5df39d3fd221b304fa743759527b1db29c492f702616e332ba8386bf4b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A42 10868 bytes
font_01_sfnt_off0000af01.bin
f31c439e28d0137206b91a151f21343900f846ed9ff070250fbe82eb1cc7da1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF01 16204 bytes

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