Malicious PDF — malware analysis report

Static analysis result for SHA-256 44984760e2eaa067…

MALICIOUS

PDF

42.0 KB Created: 2020-04-04 07:17:12 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 039f89ad77a2aa6d0b14ee7fc95ab4c7 SHA-1: a303d69b1d0ed0817153cb382e6b64e730be7f20 SHA-256: 44984760e2eaa067a5a9d0ff659b0ebc06744247d58b855562413177965fe88e
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The primary URL points to a document discussing political and socioeconomic relations, but the embedded links lead to numerous other PDF files hosted on various domains. This structure suggests the document is designed to manipulate search engine results or to act as a distribution point for further malicious content. No scripts were extracted, and the document body is heavily obfuscated.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://phoenixvisiontech.ca/uploads/1/3/0/5/130543537/130543537.html#rela%C3%A7%C3%B5es+pol%C3%ADticas+e+socioecon%C3%B4micas
    • http://projectoneeight.net/uploads/1/3/0/8/130873712/2f2a80953d09.pdf
    • http://codersnucleus.net/uploads/1/3/0/3/130323405/nisiw_mupovibodovotez_mebujil_reriwibowogeki.pdf
    • http://veganthings.ca/uploads/1/3/0/3/130379213/wutam-faxuwizona-jugene.pdf
    • http://quairadingagshow.com/uploads/1/3/0/5/130542922/luvuv.pdf
    • http://danahoitartroom.com/uploads/1/3/0/3/130313641/mebetufurudejadanu.pdf
    • http://mindfulnesswelcome.com/uploads/1/3/0/5/130550679/juxabetobabi.pdf
    • http://rescuedada.net/uploads/1/3/0/3/130323454/gawewadatojaxa.pdf
    • http://shumworks.com/uploads/1/3/0/5/130551081/numokexune.pdf
    • http://hokaimingkalvin.com/uploads/1/3/1/0/131070798/gejin.pdf
    • http://oceanblueint.com/uploads/1/3/0/5/130539054/vowiroxusobapeneb.pdf
    • http://gtggives.org/uploads/1/3/0/6/130639419/70855758c3de802.pdf
    • http://med-impulse.ru/uploads/1/3/1/3/131379671/jemometosu.pdf
    • http://luckynumber108.com/uploads/1/3/0/3/130379397/donenegenut_kisiv.pdf
    • http://stbfaithformation.com/uploads/1/3/0/5/130540040/lerexamupiwofan.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d85.bin
06109647a9646b28c9ff36d3f69dfbf049569c71a7bd6391364fc67357f42ee7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D85 10136 bytes
font_01_sfnt_off00008ef0.bin
e91619dfd4c72a85464d95ef1ba4e67df13020651c42071bafbe521a61d9f7fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EF0 2652 bytes

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