Malicious PDF — malware analysis report

Static analysis result for SHA-256 f44d44165af2549c…

MALICIOUS

PDF

61.7 KB Created: 2020-04-15 02:13:19 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7f44667fad824ad7d032344aedb79afb SHA-1: 03ef7e44f7e7a74293a076527c2348820d76e109 SHA-256: f44d44165af2549c6a489178a87ec6cb58d636413ddc98e29ffa5935ff43c056
62 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to uniquely named PDF files on various domains, indicating a link farm or SEO spam operation. One of the embedded URLs, 'http://jorcausa.com/uploads/1/3/0/5/130539412/130539412.html#funny+answer+to+are+you+okay', is presented in the document body, suggesting a social engineering lure. The primary purpose appears to be driving traffic to these external sites.

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://jorcausa.com/uploads/1/3/0/5/130539412/130539412.html#funny+answer+to+are+you+okay
    • http://scrunchiesbybriana.com/uploads/1/3/0/5/130590719/miralojeluvatez-wamemorabewa-kinavixusave.pdf
    • http://millidesigns.com/uploads/1/3/0/5/130543092/fujikikifiw-zuvil-parabus.pdf
    • http://ledburyrefugeesupport.com/uploads/1/3/1/4/131453918/1532111.pdf
    • http://bostonlifetech.com/uploads/1/3/0/8/130814559/vigowosut.pdf
    • http://visage-leather.com/uploads/1/3/0/6/130621366/gutisawa.pdf
    • http://p4gconference.scienceview.gr/uploads/1/3/0/6/130620986/956af2b9e53b3c4.pdf
    • http://ded-consultoriaeservicos.com/uploads/1/3/0/6/130640061/5d740ad.pdf
    • http://nkshoporlando.com/uploads/1/3/0/7/130775565/521b37528f3.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b9b1.bin
b7ad233bd4d39b807b585687b38daf77ee31ac7c4460d41d6622414111a7fb40		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB9B1 9028 bytes
font_01_sfnt_off0000dc09.bin
885781ec91db75dc8c4a6a3d3dac0324bdfdb8f2239dab70466c62035ae072da		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC09 4144 bytes

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