Malicious PDF — malware analysis report

Static analysis result for SHA-256 43545bd335e6efb3…

MALICIOUS

PDF

40.2 KB Created: 2020-05-30 14:21:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fa14dcc45722a1b5d7cf2ecd07bb3798 SHA-1: 98b01e98ad46d142f1ae1062d0e30ef819f5525c SHA-256: 43545bd335e6efb328151045e7f2abecaebce12223560fe2047e167411d1fcc3
70 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are hosted on unrelated domains and appear to be part of a link farm. The heuristic 'PDF_SEO_LINK_FARM' indicates this behavior. Additionally, the 'SE_URGENCY_LURE' heuristic suggests the document content attempts to create a false sense of urgency. No scripts were extracted from this sample. The primary attack pattern involves directing users to a network of potentially malicious websites through these links.

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://comicsatfault.com/uploads/1/3/0/5/130551351/130551351.html#forcible+entry+detainer+residential
    • http://blakesimonfilm.com/uploads/1/3/1/4/131437937/zabobumegubiwugoz.pdf
    • http://cancelingatimeshare.com/uploads/1/3/0/8/130874477/ac19f279f.pdf
    • http://wibmexpo.com/uploads/1/3/0/6/130620353/vebewixebanodad.pdf
    • http://lesjardinsdecoraline.com/uploads/1/3/0/6/130621202/2592641.pdf
    • http://tomthetuor.com/uploads/1/3/1/6/131636651/zukefuzelewa.pdf
    • http://hanfeeling.com/uploads/1/3/1/3/131382320/duzazo.pdf
    • http://redefininghomes.net/uploads/1/3/0/4/130488884/sojidiwop.pdf
    • http://ohmythisisgood.com/uploads/1/3/0/7/130740084/2397607.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_off0000712c.bin
af7877e3ae04861d5c865dd63025b4808004abea34d0d146b24cf6d7af751393		 pdf-font-stream PDF embedded font (sfnt) at offset 0x712C 10640 bytes

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