Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0a3697e798e14e8…

MALICIOUS

PDF

38.9 KB Created: 2020-04-03 21:03:24 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: cab6d518bdea8fcbde33743db7c5fc59 SHA-1: 53449116b08757ccf14d00d5a77a575f38402892 SHA-256: d0a3697e798e14e8489a5f2607e7c7d84c38a11fc3e2356b328b1a4afa3258e5
70 Risk Score

Malware Insights

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

The PDF contains a large number of external links to other PDF files hosted on various domains, indicating a link farm or redirection scheme. The heuristic 'PDF_SEO_LINK_FARM' strongly suggests this malicious intent. While no scripts were extracted, the presence of numerous unknown external URLs points to a delivery mechanism for potentially malicious content or SEO abuse.

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://claytonheightsmassage.com/uploads/1/3/1/3/131379356/131379356.html#fundamentals+of+t+sql+pdf
    • http://tristarconstructioninc.com/uploads/1/3/0/3/130379398/21cf8.pdf
    • http://procesa.us/uploads/1/3/0/6/130621435/1409605.pdf
    • http://www.mysanmigueltennis.com/uploads/1/3/0/6/130620818/2849643.pdf
    • http://westybands.com/uploads/1/3/0/6/130603887/5903046.pdf
    • http://catholicsonfire.net/uploads/1/3/0/2/130274032/e07ba11.pdf
    • http://bkdatl.com/uploads/1/3/0/6/130621880/7c2b96fc91b3.pdf
    • http://woofnature.com/uploads/1/3/0/8/130814189/tarafukaj.pdf
    • http://rkdrents.com/uploads/1/3/0/8/130813616/8071732.pdf
    • http://guelphpropertymanagement.com/uploads/1/3/1/4/131453216/foliwo-deneji.pdf
    • http://tomsom81.com/uploads/1/3/0/8/130873958/3860557b.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_off00006f94.bin
c7c51eb30e8f6dab47ecdfc7e8479faf29c6705d560c5831645f5c718a636ec3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F94 8184 bytes

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