Malicious PDF — malware analysis report

Static analysis result for SHA-256 87a179763ce01e68…

MALICIOUS

PDF

40.7 KB Created: 2020-04-07 23:55:33 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 959cc260619137ccd9e983fc72b0f889 SHA-1: bfd671b5e6f0341ea1a2a799508ed2a08c413de1 SHA-256: 87a179763ce01e68ca2c8f14c16771e24b360f98f8765e5b03354f5fd20300e0
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 to other PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for malicious content. The document body itself is heavily obfuscated but contains references to the URLs. No scripts were extracted from this sample.

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://janeyogaweb.com/uploads/1/3/0/6/130605240/130605240.html#history+and+tradition+of+jazz+pdf
    • http://graffitigreek.com/uploads/1/3/0/2/130288488/6496102.pdf
    • http://habitbooking.com/uploads/1/3/1/4/131409385/1142162.pdf
    • http://burzykowski.net/uploads/1/3/0/6/130603982/8162616.pdf
    • http://motoinspektor.com/uploads/1/3/0/8/130814441/bupopuge-pifevexu-jusufifopi-wexelapowidut.pdf
    • http://the-boat-online.com/uploads/1/3/0/3/130379461/439854.pdf
    • http://westernnlclimbing.com/uploads/1/3/1/3/131380969/bowujigiri.pdf
    • http://www.martiescatering.com/uploads/1/3/0/5/130551416/dbddecb272a5.pdf
    • http://cytogistic.com/uploads/1/3/0/8/130814343/zujalukoguduteba.pdf
    • http://loverstone.com/uploads/1/3/0/6/130621315/sexokotexegeninu.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_off00007426.bin
97956b953f389cb50ad3a16e8e982bd49960dd430401049d87471fa6404d18bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7426 8344 bytes

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