Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cbd0360bca3f07f…

MALICIOUS

PDF

35.6 KB Created: 2020-05-15 19:08:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69e8370d722b27300aa70851ea501923 SHA-1: 12cd2e2a0c3f961599dfd807ee1a783e6b4ba5a4 SHA-256: 8cbd0360bca3f07fb66924bf66ab4276a76cac932ee916928f19648d50463266
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1598 External Remote Services

The PDF document contains a mass of external links, many of which are numerically or generically named PDFs hosted on various domains. This pattern is indicative of a link farm or SEO spam campaign designed to drive traffic to potentially malicious or deceptive websites. The document body, though heavily obfuscated, contains references to a guide and the authoring tool, suggesting a pretext for the embedded links. 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://tarasnaumenko.com/uploads/1/3/1/4/131437677/131437677.html#ib+language+ab+initio+guide+2017
    • http://airportcityinvest.com/uploads/1/3/0/5/130589126/xolavarififa-kotejigudok-xojorifabezebax.pdf
    • http://losdospaelleros.com/uploads/1/3/0/5/130551364/4751741.pdf
    • http://yourbankproduct.com/uploads/1/3/0/7/130774965/xozesegosifasar_jetedetibatole.pdf
    • http://divinelylit.net/uploads/1/3/0/9/130968906/5a2c4e07269121e.pdf
    • http://workwithamma.com/uploads/1/3/1/3/131379031/gopota.pdf
    • http://jaredshechtman.com/uploads/1/3/0/4/130475918/gabusivi.pdf
    • http://dragonboutique.org/uploads/1/3/1/4/131438419/1e0830eb9ff80e2.pdf
    • http://josh-ortiz.com/uploads/1/3/0/5/130551704/jenejalaj.pdf
    • http://tcj-gaming.com/uploads/1/3/0/7/130739595/nujoxogiti.pdf
    • http://buteykobreathingeducators.com/uploads/1/3/0/5/130538840/cd2e916.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_off00005d89.bin
206258017452ccab28a4fe6c6aa182f5033316e923312b60af10687e89d88770		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D89 11568 bytes

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