Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0e1d69fce2b3706…

MALICIOUS

PDF

30.1 KB Created: 2020-06-12 04:28:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2c985a17459a6e48919343f48be70d3 SHA-1: c8e4b204b474504f8ce3634dee341738b60540dc SHA-256: f0e1d69fce2b3706ede0342ebc94540a74ced76cc7dd2d6f79464f9ac60f2e6b
92 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The document body also contains the URL http://20online.net/uploads/1/3/0/8/130874272/130874272.html#troy+bilt+service+manuals, suggesting a lure related to service manuals. The ML classifier strongly flagged this PDF as malicious. The primary attack pattern appears to be a link farm designed to redirect users to potentially malicious sites or for SEO manipulation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • 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
  • 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://20online.net/uploads/1/3/0/8/130874272/130874272.html#troy+bilt+service+manuals
    • http://mcgovernmeats.com/uploads/1/3/0/2/130287894/fufasopanavizi_tulobar.pdf
    • http://mta-sts.mail.sedonaroadrunners.com/uploads/1/3/0/5/130590047/d5a31fdadb.pdf
    • http://mementomoriny.com/uploads/1/3/0/7/130739584/f5d2d5e4f.pdf
    • http://stewartandsmart.com/uploads/1/3/0/7/130775987/bapax_pojopope_nasabibe.pdf
    • http://reddeerseptic.com/uploads/1/3/0/3/130379216/bakupepine.pdf
    • https://bawizevil.files.wordpress.com/2020/06/pibedorufufota.pdf
    • https://sezorez.files.wordpress.com/2020/06/62729566547.pdf
    • https://dejerur.files.wordpress.com/2020/06/pejokugavefevagibako.pdf
    • https://bujavam.files.wordpress.com/2020/06/22884590331.pdf
    • https://gagubajugi234726942.files.wordpress.com/2020/06/kevuleze.pdf
    • https://nabedimoruz.files.wordpress.com/2020/06/95038056841.pdf
    • https://mijukuwojaw.files.wordpress.com/2020/06/40156890911.pdf
    • https://juwurel.files.wordpress.com/2020/06/novifotagol.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049de.bin
f5c92c45fbb104e917f16777b73d37355ce3a32c78c67a0b7bfb081c0f0d7834		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49DE 10448 bytes

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