Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a73f736ef989b4e…

MALICIOUS

PDF

43.4 KB Created: 2020-04-11 23:10:33 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 486977341c77a669725b24f313905e3f SHA-1: b24a415ff8708b09e8d6f6f1c250e59612f92ad1 SHA-256: 8a73f736ef989b4e0f4a6e49e5cc6778452c6d849444985d1125d09257f2508a
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to PDF files with numeric slugs, suggesting a link farm or SEO poisoning tactic. The document body text mentions 'Mejora continua' (continuous improvement), which is likely a lure to encourage users to click on the embedded malicious URLs. The primary malicious URL identified is http://shipping2050now.com/uploads/1/3/0/3/130323814/130323814.html#mejora+continua+que+es+y+para+que+sirve.

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://shipping2050now.com/uploads/1/3/0/3/130323814/130323814.html#mejora+continua+que+es+y+para+que+sirve
    • http://fearfullyfierce.com/uploads/1/3/1/3/131380032/115338bb8.pdf
    • http://reconnectyouth.org/uploads/1/3/1/6/131637570/1b8a7da64.pdf
    • http://siliconvalleyenl.com/uploads/1/3/0/5/130551179/4033699.pdf
    • http://sabinasalussolia.com/uploads/1/3/1/3/131384539/3440800.pdf
    • http://iapicca.ch/uploads/1/3/1/4/131406515/2e2d5a9951.pdf
    • http://eesome.design/uploads/1/3/1/4/131438874/bomogipepinoj_nasanixa_gusiroxazixi.pdf
    • http://wizardspizza.com/uploads/1/3/0/6/130621587/fe7d8a.pdf
    • http://betsyandtodd.com/uploads/1/3/0/7/130775138/kedirajir.pdf
    • http://hooklinelunkers.com/uploads/1/3/0/5/130551556/7407970.pdf
    • http://fearfullyfierce.com/uploa
    • 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_off00007f3f.bin
3720614228639df3325a638bd31d0f08867a2bf9ad8e60c5e69865dca7c4a889		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F3F 9008 bytes

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