Malicious PDF — malware analysis report

Static analysis result for SHA-256 31df1ec12bc089c0…

MALICIOUS

PDF

54.4 KB Created: 2020-04-04 06:26:05 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 24fdad5d0d5d4223dfee0501b31a005c SHA-1: 3513b4706a6a2b6adeda9d74c8f7294f7128b327 SHA-256: 31df1ec12bc089c0b5e32fffd37b80ecfbd7100a80148b9b51880245aeabcb03
72 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as a "12 week year study guide download" to entice users. The PDF_SEO_LINK_FARM heuristic indicates a mass of external links, likely to host further malicious content or phishing pages. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery mechanisms beyond the embedded URLs.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://scheercoaching.com/uploads/1/3/0/8/130813428/130813428.html#12+week+year+study+guide+download
    • http://ignitewms.com/uploads/1/3/1/4/131406564/lilerobix-soxiguguv-womimijatarulum.pdf
    • http://mobile.streetsmartyouthproject.org/uploads/1/3/1/4/131438825/sukexupusir.pdf
    • http://axisatx.com/uploads/1/3/0/3/130324126/sobanime_xufukenu.pdf
    • http://samanthalynnacrylics.com/uploads/1/3/0/3/130313624/535795.pdf
    • http://efmindia.org/uploads/1/3/0/6/130605314/1699c41009290ae.pdf
    • http://avalonmusic.org/uploads/1/3/0/2/130273753/5912236.pdf
    • http://dazzl.net/uploads/1/3/0/5/130550723/fitegopivajav-xibamukemo-pibuwo.pdf
    • http://jphotograhics.com/uploads/1/3/0/2/130274028/2373132.pdf
    • http://nsr10313.com/uploads/1/3/0/2/130287371/xujevud.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_off0000abf4.bin
28ea86e24561fd0f3e6e7d8b2565eef15c436d322cdb4df2f63b4b5e3c745739		 pdf-font-stream PDF embedded font (sfnt) at offset 0xABF4 8572 bytes

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