Malicious PDF — malware analysis report

Static analysis result for SHA-256 23dd5eaaef8d76b1…

MALICIOUS

PDF

46.7 KB Created: 2020-05-06 05:07:42 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 713a732bbc8a79b338d76c36e010e074 SHA-1: c536465f258c6191ac3dc60e91d4c657c5485a0e SHA-256: 23dd5eaaef8d76b1cbac473d4297b95acfe986c0b1dbeae1743feac1935f241f
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 point to similarly structured URLs on different domains. This behavior is indicative of a link farm or a phishing campaign designed to distribute malicious content or harvest credentials. The document body, though heavily obfuscated, contains a URL that matches one of the extracted external links, reinforcing the malicious intent. 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://loskuatro20decalifornia.com/uploads/1/3/1/3/131383764/131383764.html#generator+manual+transfer+switch+south+africa
    • http://imnotatree.com/uploads/1/3/0/7/130775867/gatuwekagufuj_nadepafirof_begebelir_kidorasasor.pdf
    • http://happywaytrucking.com/uploads/1/3/0/5/130542968/xeworidef.pdf
    • http://yellowbirdportraits.com/uploads/1/3/0/2/130272592/taribivamuxi.pdf
    • http://famousbeauty.net/uploads/1/3/0/2/130289632/5702f7b9513.pdf
    • http://redsnail.com/uploads/1/3/0/7/130738505/129c15eb3c.pdf
    • http://macksirishsealcoat.com/uploads/1/3/0/3/130313557/jagejorosifurig_ginobanasolo.pdf
    • http://bankingbpo.com/uploads/1/3/0/5/130588824/xazejir-bigok.pdf
    • http://bristoldrygin.net/uploads/1/3/1/0/131070401/lapikemuwuguwazuwezi.pdf
    • http://y1consulting.com/uploads/1/3/0/4/130483527/06b7b3d35a9cf.pdf
    • http://vermonteventrental.com/uploads/1/3/0/7/130739457/c02f9.pdf
    • http://mueblessalazar.com/uploads/1/3/0/9/130969944/be66df9.pdf
    • http://rouviere.xyz/uploads/1/3/0/7/130739308/e08f7b.pdf
    • http://pilgrimpowerplant.com/uploads/1/3/0/7/130776657/9c0a55464.pdf
    • http://famousbeauty.net/uploa
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • 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_off00008b1b.bin
726a2013055819116c533f87d7793448f4c2877a6b7539fb6f0c0b4626437424
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B1B 10948 bytes