Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8ba73e992dacd11…

MALICIOUS

PDF

42.1 KB Created: 2020-04-17 05:51:51 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 821cb2ed3c933625138469573fafdeb0 SHA-1: c75cf991cfb82028bb104412fc6532bc0c91f6c6 SHA-256: d8ba73e992dacd118291ad072a552cee480297c20ad7f04d883810a34f60790a
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or SEO manipulation tactic. The primary external URI found is http://browndoginspections.net/uploads/1/3/0/7/130776291/130776291.html#cordiform+projection+meaning. No scripts were extracted, and the document body is heavily obfuscated, making it difficult to determine a more specific attack pattern beyond the link farm. The file was generated using wkhtmltopdf.

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://browndoginspections.net/uploads/1/3/0/7/130776291/130776291.html#cordiform+projection+meaning
    • http://deliveredphotos.com/uploads/1/3/1/1/131163945/a54a78524d97c.pdf
    • http://kimbersmassage.com/uploads/1/3/0/7/130739463/sewuzere.pdf
    • http://mobilebillboardssantaclara.com/uploads/1/3/0/6/130604428/sulapomu.pdf
    • http://gym4life.eu/uploads/1/3/0/5/130590637/gawosi-fukapemabolep-radageku.pdf
    • http://allonesoul.com/uploads/1/3/0/6/130639781/3190075.pdf
    • http://ulrichthy.com/uploads/1/3/1/4/131406592/4113503.pdf
    • http://mariobernal.com/uploads/1/3/0/4/130436163/9456233.pdf
    • http://chippedchrome.com/uploads/1/3/0/7/130775551/rikuvo.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_off000068be.bin
52e215ed7ed063ed82d0a99d30ef198600b4ef2a1a16c9c91e5334368084abae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68BE 7552 bytes
font_01_sfnt_off000085e7.bin
32636a0cf6f920cef8011dfae5d31cc27f000543b12b0d5ef1932bc957c3bc96		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85E7 16336 bytes

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