Malicious PDF — malware analysis report

Static analysis result for SHA-256 092be48424942fd0…

MALICIOUS

PDF

43.4 KB Created: 2020-04-14 11:50:33 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 82c9387071a02963b2b141b86aeeb68f SHA-1: 7b78c182993f444a3ab078301b4bae6f78abc3c5 SHA-256: 092be48424942fd084b711e68fa44ea645f8a78d302972823d76e074672d983f
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links to other PDF files hosted on various domains, indicating a link farm or redirection scheme. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external URIs supports this assessment. While no scripts were explicitly extracted, the PDF structure and link farm behavior suggest it's designed to redirect users to potentially malicious content.

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://buddhatojayz.com/uploads/1/3/0/2/130287847/130287847.html#benode+behari+mukherjee+pdf
    • http://laserskinclinic.net/uploads/1/3/0/4/130483833/damuwipikebuniweli.pdf
    • http://gfoxinc.com/uploads/1/3/1/4/131453902/jugigo-jifevogerigaziz-jesipej-gutebudabisa.pdf
    • http://briovita.com/uploads/1/3/0/6/130620818/medejeza-losemubo-dajetagera.pdf
    • http://wmsperformingarts.com/uploads/1/3/0/8/130814004/jevegusome-boboge-bugemubuzisexok-rigezapidax.pdf
    • http://qodin.com/uploads/1/3/0/4/130483733/gigesav.pdf
    • http://thepubhub.services/uploads/1/3/0/7/130738596/ebc3068227.pdf
    • http://evanselitefitness.com/uploads/1/3/1/0/131071021/pakowik_vejixisorexax_poxexotinuf_xagidiw.pdf
    • http://pier-jetsports.ca/uploads/1/3/0/6/130621951/16692f92.pdf
    • http://fwddirection.com/uploads/1/3/1/6/131637137/360911.pdf
    • http://rachellberlinartdesign.com/uploads/1/3/0/4/130436068/miketepugiwaz_basawuj.pdf
    • http://classicseiko.com/uploads/1/3/0/6/130639936/cd895aeb63.pdf
    • http://laughingbuddharetreats.com/uploads/1/3/0/4/130483510/vetigovofovotekawowa.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/
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006eb2.bin
81da3ce9225e09743af92a0dc5707c9bb45327ab41a153c69dcfb91ac8a1c51b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EB2 7928 bytes
font_01_sfnt_off00008d4e.bin
c30968432a1e7a984ac955096c2d95b4c86fcd41a11b84cf47d5d8157020715d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D4E 7732 bytes

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