Malicious PDF — malware analysis report

Static analysis result for SHA-256 32cd83e9d7735701…

MALICIOUS

PDF

36.7 KB Created: 2020-04-28 13:28:46 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 895b15996391150e7b6430e083002a8b SHA-1: 3854140b70ae5fdf33f3fafc4b57761ee076af4d SHA-256: 32cd83e9d7735701bba8850e3e258290b05c4f61372ee12f232f17b22bcf29d8
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link farm with numerous external URLs, disguised as a source for free audiobooks. The primary heuristic indicates a mass external PDF link farm, suggesting a malicious intent to redirect users to potentially harmful content. No scripts were extracted, limiting the analysis of direct payload execution. The document body is heavily obfuscated and contains metadata from wkhtmltopdf.

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://allaboutrustic.com/uploads/1/3/1/4/131437726/131437726.html#free+audiobook+s+online
    • http://jeejyejoe.com/uploads/1/3/0/2/130270885/5577583.pdf
    • http://kelseydolores.com/uploads/1/3/1/3/131384604/vimakopak.pdf
    • http://gbritsolutions.com/uploads/1/3/0/7/130740368/masud.pdf
    • http://sondetikizia.com/uploads/1/3/1/3/131398606/budako_vefuzikedesi_nunawagipanoj_xugesavu.pdf
    • http://woulibayiti.com/uploads/1/3/0/8/130874378/zovilatovodojik.pdf
    • http://rhymeswithneedle.com/uploads/1/3/0/7/130739073/11286e5c81be41.pdf
    • http://loaves4life.org/uploads/1/3/0/5/130550809/bevupuxonawevip_wefebaletigono_vixedu.pdf
    • http://hlibka.com/uploads/1/3/1/4/131482867/puzukuputojerep.pdf
    • http://supersizeled.nl/uploads/1/3/0/9/130969621/7454932.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_off0000656d.bin
e38f6b8314456c80c1e45801cd3b612ba860c2aedfb58a401ceba6df8a9ea037		 pdf-font-stream PDF embedded font (sfnt) at offset 0x656D 8660 bytes

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