Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c9b03d43d049840…

MALICIOUS

PDF

53.2 KB Created: 2020-04-11 00:17:39 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: c2b378344fcdee4c266a494dce341dc6 SHA-1: 203afb8be43dd28dcb1e7906f2a9d65429519e01 SHA-256: 7c9b03d43d04984015e728bfd5ae30a22df0a89820db3a7d163ee5eb3db3ffc3
70 Risk Score

Malware Insights

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

The PDF file contains a lure for a free software download, which is a common tactic for distributing malware. It embeds a large number of external links, many of which point to other PDF files, suggesting a link farm or redirection mechanism. The primary URL identified is http://trentriverdesigns.com/uploads/1/3/0/5/130588556/130588556.html#zooper+widget%2Fpro+v2.60+free+download, which likely serves as the initial entry point for the malicious workflow.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trentriverdesigns.com/uploads/1/3/0/5/130588556/130588556.html#zooper+widget%2Fpro+v2.60+free+download
    • http://diversified-resources.org/uploads/1/3/1/3/131379356/bemedewexorifageja.pdf
    • http://jcspencer.us/uploads/1/3/0/8/130873776/fovipoz-febepozatuzer-jixokumu.pdf
    • http://jeral.org/uploads/1/3/0/7/130739121/dalunazifev.pdf
    • http://dawnhillsenate.org/uploads/1/3/0/7/130739088/xotepupadirexifa.pdf
    • http://korrobiosciences.com/uploads/1/3/1/4/131455663/4089497fb3ceee0.pdf
    • http://pukkachai.com/uploads/1/3/0/7/130738622/410a73e9113.pdf
    • http://blastaxcapital.com/uploads/1/3/0/5/130590229/0114a17.pdf
    • http://huntingpigs.com/uploads/1/3/1/3/131379326/gedim-daduriwilafavat-zisumavaro.pdf
    • http://kellykrusephotography.com/uploads/1/3/0/9/130969830/jeluza.pdf
    • http://diversified-resources.org/uploads/1/3/1/3/131379356/bemedewexorifageja
    • 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_off0000a827.bin
157360c010073bf81aeac68af5e7aae18d252ca22d441c8f7198ca28258e2e0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA827 8552 bytes

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