Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5448339f1f28bfb…

MALICIOUS

PDF

33.2 KB Created: 2020-04-11 08:23:00 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 5932b434b226092e7db7bcee1043da36 SHA-1: bc72c9e1c149adf3c1b8b96dc0b2e71ebdbd7d53 SHA-256: b5448339f1f28bfbd69af323170b08a9e193ae423a0dff29bdd4e59c80187647
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links to other PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The document body itself contains garbled text and references to the authoring application, suggesting it was programmatically generated to host these links. No scripts were extracted, limiting the analysis of direct malicious actions.

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://almultiservices.ca/uploads/1/3/0/7/130739640/130739640.html#introducing+cultural+anthropology+5th+edition
    • http://spuncocktail.com/uploads/1/3/0/4/130483980/5309285.pdf
    • http://roycepollard.com/uploads/1/3/1/3/131382373/sejep.pdf
    • http://plsdecorators.com/uploads/1/3/0/5/130546937/79fab761fcf63.pdf
    • http://bilderbrunnen.ch/uploads/1/3/0/2/130288453/8657089.pdf
    • http://simptech.net/uploads/1/3/0/6/130604359/rolebalugozi.pdf
    • http://mbfuneralnews.com/uploads/1/3/0/7/130740123/ralixarulufabivusuk.pdf
    • http://just4owens.com/uploads/1/3/1/4/131406831/wobalugiweketiwixi.pdf
    • http://the-digitallife.com/uploads/1/3/0/2/130289554/f5aa3.pdf
    • http://automotivepartsgroup.net/uploads/1/3/0/2/130289247/sezulolifora.pdf
    • http://celeb-recipes.com/uploads/1/3/0/6/130639304/ffbdc64.pdf
    • http://safeseniorsolutionsllc.com/uploads/1/3/0/2/130291662/difuwut.pdf
    • http://xuananhtran.com/uploads/1/3/0/7/130740224/005e0d4b.pdf
    • http://mekafarm.com/uploads/1/3/0/2/130291712/wotuxevup.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_off0000582b.bin
2e457313b23f4916999004a6566412f3f422fd81ba2dd9eea010c38bdd9a2c50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x582B 8376 bytes

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