Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e1f210691db1c93…

MALICIOUS

PDF

57.6 KB Created: 2020-04-04 12:53:03 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b6f2a0870b1a480adca603b38d1b314c SHA-1: d0096757501aafb0561d01d98b03815057ba8e90 SHA-256: 4e1f210691db1c93ffd5c0e4c787d8d7c63cbdb2d43a3d468426c243fa537640
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are numerically or generically named, suggesting a link farm or SEO manipulation tactic. The primary lure appears to be 'Stephen king's the stand miniseries online', directing users to a potentially malicious URL. No scripts were extracted, and the document body was heavily obfuscated, but the heuristic firings strongly indicate a malicious intent to redirect users to external, likely compromised, websites.

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://mcguirehomes.net/uploads/1/3/0/7/130738764/130738764.html#stephen+king%27s+the+stand+miniseries+online
    • http://demurrage-sucks.com/uploads/1/3/1/4/131437833/wusupu.pdf
    • http://stedwardschoolchristmastreefundraiser.com/uploads/1/3/0/2/130291531/lolomebozalujudod.pdf
    • http://rachelclode.com/uploads/1/3/0/6/130605108/tepozaxa-rololadas-botawin.pdf
    • http://changeofperspective.net/uploads/1/3/0/5/130540882/945bc07c.pdf
    • http://christinewallphoto.com/uploads/1/3/0/7/130739883/sitawudadetu.pdf
    • http://ajoyfulword.com/uploads/1/3/0/6/130640095/nabas.pdf
    • http://weddingmusicsandiego.com/uploads/1/3/1/4/131412858/1ec90785e20fa50.pdf
    • http://www.brianedennison.org/uploads/1/3/1/3/131379545/08c068c0.pdf
    • http://ashleypeyton.com/uploads/1/3/0/7/130776740/juxax_foxexova_pefimutaperegon_konuvugelepumok.pdf
    • http://lozzil.com/uploads/1/3/0/5/130588452/zomuxomapabew.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_off0000b52c.bin
96de4cd3977b5f5ab1b61724828e02fd93216e041741c9e9f6ff578260fcfa15		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB52C 8896 bytes

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