Malicious PDF — malware analysis report

Static analysis result for SHA-256 c17c5add4f18b817…

MALICIOUS

PDF

34.2 KB Created: 2020-04-18 02:40:14 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3af972051315af145ddfd7765fa7a895 SHA-1: f361c8415c03dd8cc7c9134baf4fd2899fe75bae SHA-256: c17c5add4f18b8171c2d337e43ea2f7f761cff983ec91a9c39b88a4c0b701728
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of external links, many of which appear to be SEO-optimized lures pointing to other PDF files. One of the primary links, 'http://theelfbox.com/uploads/1/3/0/6/130604078/130604078.html#horizontal+projectile+motion+worksheet+with+answers', is directly embedded in the document body. This suggests a phishing or redirection attack, aiming to trick the user into visiting a potentially malicious site. No scripts were extracted, limiting the analysis of direct payload execution.

Heuristics 3

  • 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.
  • 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://theelfbox.com/uploads/1/3/0/6/130604078/130604078.html#horizontal+projectile+motion+worksheet+with+answers
    • http://elektrotickets.com/uploads/1/3/0/8/130874252/8625501.pdf
    • http://texquotes.com/uploads/1/3/1/4/131406735/besirerenumu.pdf
    • http://designsbydru.net/uploads/1/3/1/3/131379503/sadumodisitu.pdf
    • http://affordablebuildingconcepts.net/uploads/1/3/0/9/130968943/lajitolumoguboker.pdf
    • http://evokedanceeistedfodd.com/uploads/1/3/1/3/131398453/popesog.pdf
    • http://myrole.legal/uploads/1/3/0/9/130969776/rusafuvigo.pdf
    • http://hopeeaglepreschool.org/uploads/1/3/0/5/130543169/sabegoga.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_off00005e1d.bin
d073ad40b7d86cef4984c06d3609a210faa3d87878e85fd3e445971a9d885787
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E1D 7892 bytes