Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8e8cba6b2ecc155…

MALICIOUS

PDF

31.9 KB Created: 2020-03-27 04:06:46 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ff45fcc9480e62d89dda27dc59f64bed SHA-1: ef4d2acb2283e68d8fe236ff39f865c6ec399b52 SHA-256: d8e8cba6b2ecc15500487aed0ada5f96e8241efa0314ff752b66ae23736d2f44
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The document body, though partially corrupted, contains text related to concrete stairs and references the wkhtmltopdf tool, suggesting a lure to SEO-optimized content. The primary intent appears to be driving traffic to a network of websites, likely for SEO manipulation or to host further malicious content.

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://locatedance.com/uploads/1/3/0/3/130379141/130379141.html#como+hacer+escaleras+de+concreto+paso+a+paso
    • http://basicallygames.org/uploads/1/3/0/5/130539496/zepoxijizaxu_xobugale_botuputalewuka_votuzebu.pdf
    • http://spshospitality.com/uploads/1/3/0/5/130588599/2529da5.pdf
    • http://daveelboymarco.com/uploads/1/3/0/7/130775862/23dd8.pdf
    • http://chesnaturalsecrets.com/uploads/1/3/0/2/130287261/pezupevagurutu-mefunux.pdf
    • http://cmmrizzi.com/uploads/1/3/0/5/130588396/354290.pdf
    • http://redmirchytksoftware.com/uploads/1/3/0/6/130603814/2908565.pdf
    • http://webmail.renoraces.com/uploads/1/3/0/3/130323423/zipumivojamegasad.pdf
    • http://laurenkwatson.com/uploads/1/3/1/0/131070637/tapugejexebabif.pdf
    • http://adornbyjen.com/uploads/1/3/1/3/131380344/505338.pdf
    • http://www.colvilleelliottwoodcraft.co.uk/uploads/1/3/0/6/130639131/7507051.pdf
    • http://bajalife.com/uploads/1/3/0/6/130604872/bedafanijikomo.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_off00005017.bin
10bee5e1df355ad5766274ff5330800e298caa8d8367c9ba73e90ac72ad08fb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5017 6568 bytes
font_01_sfnt_off000068f7.bin
63f5e27ee3d24cc00d413e59c301cc73ab377383609796993547673f2bea898c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68F7 2600 bytes

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