Malicious PDF — malware analysis report

Static analysis result for SHA-256 96ff1b4b39a7eb76…

MALICIOUS

PDF

35.0 KB Created: 2020-06-16 23:46:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7324571de28ea0e04e9abc4eaa07a9a0 SHA-1: 84c4505da3f86fe7a70bba7ebcd2aaa5994ac47b SHA-256: 96ff1b4b39a7eb76c1e53876f16b80c4b757f23d289f00a3c36e6dde589b9a14
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to similarly structured URLs on different domains. This indicates a link farm or SEO spamming operation. The primary heuristic 'PDF_SEO_LINK_FARM' confirms this, identifying a mass of external PDF links. The document body, though heavily obfuscated, contains references to URLs that are also present in the heuristics, reinforcing the link farm attack pattern. No scripts were extracted from this sample.

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://polevaulter.net/uploads/1/3/0/4/130483117/130483117.html#vw+jetta+2004+manual
    • http://lantzvillebeaches.com/uploads/1/3/1/4/131438216/e18c5fab4d641.pdf
    • http://pascalpr.com/uploads/1/3/0/7/130740442/1356906.pdf
    • http://hostmaster.davidyoungmciob.info/uploads/1/3/1/8/131856161/2727527.pdf
    • http://mail.katastrophique.com/uploads/1/3/0/7/130776609/zolit.pdf
    • http://mylawnsharks.com/uploads/1/3/0/5/130588497/6709796.pdf
    • http://ecuriebarnton.com/uploads/1/3/0/7/130739260/7088533.pdf
    • http://pedalyoga.com/uploads/1/3/0/5/130546434/borebi.pdf
    • http://healmyhorse.org/uploads/1/3/0/6/130604826/simokuridurebex.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_off00004de6.bin
7ebb8ac08412d9c70fb2f518024ddf4f7b5586198338f4d878b2772e357d4621		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4DE6 4776 bytes
font_01_sfnt_off00005e20.bin
d1100c9d15ddbc0d0c5f72d0c5bb24e00efe9f22f60e944e7dafce0e4f1b0338		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E20 10056 bytes

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