Malicious PDF — malware analysis report

Static analysis result for SHA-256 bada9405f3587b18…

MALICIOUS

PDF

26.2 KB Created: 2020-04-12 23:10:49 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9cef7ec9670407fbb4e0884fb66acdfb SHA-1: 1c1ff65711b5e8c9e363520fe6fd3f3c6075172a SHA-256: bada9405f3587b18c2243e33e2c2f07836baa370af56a47b9b8c094e2662759f
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of external links to various domains, a technique often used for SEO poisoning or to redirect users to malicious content. The ML classifier strongly indicated maliciousness. The document body contains text related to a user manual, which may serve as a lure. The primary attack pattern involves leveraging a link farm to distribute or redirect users to further malicious stages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://auvimedia.net/uploads/1/3/0/2/130287243/130287243.html#whirlpool+super+capacity+465+user+manual
    • http://drome-provence-gite.com/uploads/1/3/1/3/131380466/jujowixuzutone.pdf
    • http://suzitakahashi.com/uploads/1/3/0/5/130544591/8237677.pdf
    • http://getprotected.me/uploads/1/3/0/4/130435658/16e50a46aa.pdf
    • http://jmj.construction/uploads/1/3/0/4/130435743/sulubevile.pdf
    • http://shadowlights.cafe/uploads/1/3/0/6/130620436/velabebosevi_nugakegimu_doxig.pdf
    • http://plussizeweddingdressesrhodeisland.com/uploads/1/3/0/4/130478470/dejipatunutawojexu.pdf
    • http://hollywoodcalling.ca/uploads/1/3/0/8/130813496/miketemob.pdf
    • http://soundnotion.tv/uploads/1/3/1/0/131070178/kavitazugebim_japiwokutobupoz_jixitukilotival_konodojepima.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_off00004347.bin
1cd5ffab26ec4e32d0d841df8943dfac403a699e7eb4fff303057d1261e2c115		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4347 5896 bytes

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