Malicious PDF — malware analysis report

Static analysis result for SHA-256 44fc30b5e635533f…

MALICIOUS

PDF

42.4 KB Created: 2020-04-06 05:40:06 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 455dfeb1d39bccaa13bec3ace57bf63b SHA-1: a211d2744b2c818cad6649160189f5f4d4041c63 SHA-256: 44fc30b5e635533f9db7d263348041617c0522802359eae4fcf3526e3ef7164e
62 Risk Score

Malware Insights

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

The PDF document contains numerous external links, a technique often used for SEO spam or to direct users to malicious sites. The document body, though heavily obfuscated, contains references to URLs such as http://tacov50.com/uploads/1/3/1/3/131379820/131379820.html#math+3+ncfe+review+answers and http://breathecation.org/uploads/1/3/0/5/130550723/1440992.pdf. The heuristic 'PDF_SEO_LINK_FARM' confirms the presence of a large number of external links, indicating a likely attempt to manipulate search engine results or redirect users to potentially harmful 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://tacov50.com/uploads/1/3/1/3/131379820/131379820.html#math+3+ncfe+review+answers
    • http://breathecation.org/uploads/1/3/0/5/130550723/1440992.pdf
    • http://cs25983456.com/uploads/1/3/0/4/130476586/musite-lajetomatuje-selawewilixafi.pdf
    • http://millennialenterprises.net/uploads/1/3/1/0/131070497/3443922.pdf
    • http://www.wccscorp.com/uploads/1/3/0/5/130588921/1226405.pdf
    • http://miranda-bewindvoering.nl/uploads/1/3/1/1/131163734/lisifumano-vapajud-pukutovopu-jejoxizebo.pdf
    • http://wasatchlittleexplorersclub.com/uploads/1/3/1/3/131398102/e203ec4b7cd.pdf
    • http://utpsych.com/uploads/1/3/0/5/130551202/novovuremuda_ripejewet_nisiregarojusi_xoturodepewub.pdf
    • http://uniquephysique.biz/uploads/1/3/0/5/130538816/4275113.pdf
    • http://amaiyahelpinghandsfoundation.org/uploads/1/3/0/9/130969331/kijajagevijipewojal.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_off00007389.bin
72fed57b39d329e94b66286b2b81f9ad5c792160c3b5f50c1989855706221dea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7389 12388 bytes

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