Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0f4ed74b1cd20fd…

MALICIOUS

PDF

40.5 KB Created: 2020-04-03 00:37:49 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b50749773f37bdafcfba7c430cb62127 SHA-1: 6e614fe9c21248a0d2a2e03988560b242a98d1c2 SHA-256: d0f4ed74b1cd20fdbac49a01da816b16b3a5df82568f4c23498bf519e8948428
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a technique often used for SEO poisoning or to redirect users to malicious sites. The document body, though heavily obfuscated, contains text referencing "Gta 5 online business spreadsheet" and includes URLs that are likely part of a link farm. The ML classifier strongly indicates maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the suspicious linking behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://droner-inc.com/uploads/1/3/1/4/131482958/131482958.html#gta+5+online+business+spreadsheet
    • http://eurogommepisano.com/uploads/1/3/0/5/130589308/3e185.pdf
    • http://toptencabo.com/uploads/1/3/1/4/131437149/gebuxepujifo_pekedar.pdf
    • http://christianrmcdaniel.com/uploads/1/3/0/4/130476091/b91f0.pdf
    • http://aiace-se.com/uploads/1/3/0/5/130546606/68a74.pdf
    • http://tropicalpainting.net/uploads/1/3/0/6/130605283/dawon.pdf
    • http://leafitout.com/uploads/1/3/0/7/130775516/8415554.pdf
    • http://verdugoeyecareassociates.com/uploads/1/3/0/5/130551258/puvadezuguruji-vukuxewugake-wokuji-wufelone.pdf
    • http://popupberlin.com/uploads/1/3/0/5/130542971/1498333.pdf
    • http://berricobeef.com/uploads/1/3/0/4/130477048/4911933.pdf
    • http://lilyhockcreations.com/uploads/1/3/0/5/130551004/6397377.pdf
    • http://paaknutrition.com/uploads/1/3/0/2/130287426/wakogunivinilos.pdf
    • http://angelatyourdoor.com/uploads/1/3/0/7/130739343/parobofokod_tezogarirose_sevoxuw_nivowowix.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_off000076c4.bin
3ac672bb453464e28f93177ffd6e10eecf0ced5b3a10821d92d9f68c993b1515		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76C4 7712 bytes

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