Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ed49e1d4ca15368…

MALICIOUS

PDF

34.9 KB Created: 2020-04-22 04:26:40 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7aae888c07123e1c70953d3cd9843f7c SHA-1: 1fecdd29974dd0c90a824858fef9c5f649ec81d8 SHA-256: 9ed49e1d4ca15368bb77f56e595f6369b628449e1a73732cfd3f82354d6ceba6
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are numerically or generically named, suggesting a link farm for SEO manipulation. The document body, though heavily obfuscated, contains references to 'Archicad 21 manual pdf' and 'wkhtmltopdf', likely as lures. The primary heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, with 'memphiscounsel.net' being a dominant host. These links likely lead to malicious content or further phishing attempts.

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://cruxsante.com/uploads/1/3/0/6/130621431/130621431.html#archicad+21+manual+pdf
    • http://memphiscounsel.net/uploads/1/3/0/5/130588287/4140717.pdf
    • http://purplehouseada.com/uploads/1/3/1/4/131407067/6e1298885582d32.pdf
    • http://flippingtheclassroom123.com/uploads/1/3/0/7/130775195/b8c4afc04cffc9.pdf
    • http://letsgetinvolved.org/uploads/1/3/0/8/130874493/9951651.pdf
    • http://ibbymemes.com/uploads/1/3/1/4/131437722/5bb266296.pdf
    • http://maiwhy.org/uploads/1/3/0/8/130813325/vobazisotujul.pdf
    • http://makohomeconstructuion.com/uploads/1/3/0/6/130621979/sozugutafajixiwo.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_off00006097.bin
7678039fff162b73d461fc93e6bec02288a928f1a23567b7adac4cbc88479ee9
pdf-font-stream PDF embedded font (sfnt) at offset 0x6097 8320 bytes