Malicious PDF — malware analysis report

Static analysis result for SHA-256 cba30cfd1c01c567…

MALICIOUS

PDF

38.7 KB Created: 2020-04-08 11:50:15 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 79751c567c76c43a67d2a316aa6803ab SHA-1: aae9c003faf7588cc8f6171da9248876c294e442 SHA-256: cba30cfd1c01c567b9c5393d58ebeba16c0ae59d5d197502dd8e3714a54b4561
62 Risk Score

Malware Insights

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

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. No scripts were extracted, and the document body is largely unreadable binary data, but the heuristic firings strongly suggest a link-based attack pattern. The primary IOCs are the numerous external URLs found within the document.

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://yogaandasianbodytherapy.com/uploads/1/3/1/4/131454102/131454102.html#ejemplo+de+metodologia+cuantitativa+y+cualitativa
    • http://ray7coughlin.com/uploads/1/3/0/6/130604358/duvivogetojixozof.pdf
    • http://westsidedolphins.com/uploads/1/3/1/1/131164351/dulof-gejomo-jibasolorutot.pdf
    • http://westfieldrapids.org/uploads/1/3/0/4/130483348/9618299.pdf
    • http://moresauce.net/uploads/1/3/0/8/130813614/5939177.pdf
    • http://restauranteamarca.com/uploads/1/3/1/3/131384115/5755619.pdf
    • http://luiscastilleja.com/uploads/1/3/0/2/130291527/f2d07e.pdf
    • http://beachbumbunny.com/uploads/1/3/0/2/130287314/71e26b2.pdf
    • http://thenationsprophet.org/uploads/1/3/0/7/130775647/317e347cf288359.pdf
    • http://praynowfbc.com/uploads/1/3/1/3/131381658/worawutifid.pdf
    • http://johnst.solutions/uploads/1/3/1/0/131070483/vomuxusunazufar.pdf
    • http://koschawaii.org/uploads/1/3/0/6/130605357/27ee8fa66b.pdf
    • http://conqueringlifeasawidow.com/uploads/1/3/0/4/130476502/dff6016.pdf
    • http://slipandclick.com/uploads/1/3/0/9/130969631/6a1a8adbf.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_off00007041.bin
789170d755a71f8cef5b672c706002bb6af60197aa9244ea4ac64b886799e94f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7041 7432 bytes

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