Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8c93cd12cbaccb2…

MALICIOUS

PDF

35.5 KB Created: 2020-05-22 07:02:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5642e247c784631e38855f03ae0d0c9d SHA-1: a6bf5e23dfe8bdb0ed39c144655b1dff5fbbb12e SHA-256: f8c93cd12cbaccb233c77a14a6c04322c016eb32de0dd2bc5218153229dcbf63
62 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF document contains a large number of external links to other PDF files hosted on various domains, indicating a link farm or distribution network. The embedded URLs suggest a tactic to manipulate search engine results or to serve as a landing page for further malicious activity. The document body itself is heavily obfuscated and contains metadata from wkhtmltopdf, suggesting it was programmatically generated.

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://2pl.undesirable.us/uploads/1/3/0/6/130603943/130603943.html#the+selection+the+heir+full+book
    • http://summervillekitchentour.com/uploads/1/3/0/8/130874543/limotuworasal.pdf
    • http://bertobuiltllc.com/uploads/1/3/1/6/131637723/pemovomoz_xopaf.pdf
    • http://kingmeministries.com/uploads/1/3/0/6/130621965/b42613dbe.pdf
    • http://farmkiosk.shop/uploads/1/3/0/5/130550817/eaa119cff5.pdf
    • http://jetpakofficial.com/uploads/1/3/0/7/130776787/walejukiv.pdf
    • http://the-power-of-1.org/uploads/1/3/0/5/130543053/06b58001987237.pdf
    • http://treetopstudiodesigns.com/uploads/1/3/0/7/130776866/d2302e4e50ae840.pdf
    • http://blackhollywoodatlanta.com/uploads/1/3/0/6/130604756/dasaxazodalivufeje.pdf
    • http://kjerstikveli.net/uploads/1/3/0/6/130604257/9472920.pdf
    • http://ohiovacationinformation.com/uploads/1/3/1/3/131381717/zodolazupelufota.pdf
    • http://rawfoodmakeover.com/uploads/1/3/1/1/131164440/9073509.pdf
    • http://sensoryfriends.org/uploads/1/3/1/0/131070317/9749052.pdf
    • http://bearcrack808.com/uploads/1/3/1/4/131406288/3699673.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_off0000614a.bin
f9947e88f85b62652ae7dbaa74124d2e00f5192e4dcdd6830d5260b95f11f774		 pdf-font-stream PDF embedded font (sfnt) at offset 0x614A 9960 bytes

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