Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4dbbe01e460ed2e…

MALICIOUS

PDF

42.6 KB Created: 2020-04-08 20:51:33 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a9026b0e465f78c7ee2bd3a1fd9f3ed1 SHA-1: 477b7d05a397972435888d4dbb8b11de080abc87 SHA-256: f4dbbe01e460ed2e2ef82d531f3d1c8fd617efaba6472c6b781ecb2502b0b9a7
78 Risk Score

Malware Insights

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

The PDF file contains multiple external links, with a significant number pointing to domains that appear to be part of a link farm designed for SEO manipulation. The presence of urgency and download button lures, combined with the suspicious link farm, indicates a phishing or redirection attempt. The document body, though heavily obfuscated, contains text related to 'Gbox mx2 update' and references to wkhtmltopdf, suggesting a potential lure for a software update, which is a common social engineering tactic.

Heuristics 5

  • 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
  • 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://pbjconstructionllc.com/uploads/1/3/0/6/130621359/130621359.html#gbox+mx2+update
    • http://folkvangr.online/uploads/1/3/0/2/130271121/deb280358.pdf
    • http://mohawklumbercom.com/uploads/1/3/0/6/130639621/wafipi.pdf
    • http://honnackerlanguageservices.com/uploads/1/3/0/2/130289553/rosebegowoxu.pdf
    • http://aukistay.com/uploads/1/3/0/5/130550809/7982819.pdf
    • http://freebirdtourandtravel.com/uploads/1/3/0/6/130620998/vijaw-gixatafazil-subeleb.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_off000075cd.bin
9516542181b4d87403ee16e61fb27fe2058ac93eb23f116fa728d7f59afa2b95		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75CD 8220 bytes
font_01_sfnt_off00009573.bin
83459e82cebe561b9e65dda6a09953c9e35f75e5df0fa62a624e1833cc5b8086		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9573 1708 bytes

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