Malicious PDF — malware analysis report

Static analysis result for SHA-256 4945f6ce92166633…

MALICIOUS

PDF

52.2 KB Created: 2020-06-17 10:48:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ce7e80a15147a2b1193b23468882d60 SHA-1: bb822141ba75885256c418e8ca126a2ef7dd623a SHA-256: 4945f6ce92166633546832796fb0712486daa037a5af83400335816f4dc5c11e
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The document body text is heavily obfuscated, but the presence of numerous URLs pointing to various domains, many with numeric or generic slugs, strongly suggests a link farm or redirection scheme. 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://pivotalllc.org/uploads/1/3/0/5/130588556/130588556.html#lessons+for+sunday+school+children
    • http://deasis3d.com/uploads/1/3/0/6/130604812/5607304.pdf
    • http://insurancemortgageadvice.co.nz/uploads/1/3/0/8/130874396/zomadexob.pdf
    • http://gapcreekapothecary.com/uploads/1/3/0/6/130605471/fece0534.pdf
    • http://robert-jennings.com/uploads/1/3/0/5/130589095/1acb81f.pdf
    • http://mx.atheistdayaustin.com/uploads/1/3/1/8/131856232/revem.pdf
    • http://sixthsenseinvestigations.net/uploads/1/3/1/6/131606469/6148843.pdf
    • http://leathergoodsbyhand.com/uploads/1/3/1/8/131871655/lisewetalewog.pdf
    • http://quinnhouse54.com/uploads/1/3/1/4/131438265/4149744.pdf
    • http://11067oldharbour.com/uploads/1/3/0/2/130272640/2941561.pdf
    • http://dollygiftbaskets.com/uploads/1/3/1/4/131452842/7353828.pdf
    • http://mexkiwiwedding.com/uploads/1/3/1/4/131453007/9719966.pdf
    • http://kitaflesbek.org/uploads/1/3/1/4/131437045/radejerog_pojopeluk.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_off00008d50.bin
55e350a749bcf3321d1f7b33746a5e1d8a0591fccc2ab6aa2df97501b560f127		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D50 4952 bytes
font_01_sfnt_off00009e17.bin
0cb6a4b5e4e65605e0881e7d7eb53cf90de70308ca8fcf470759bab96e0acb8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E17 10660 bytes

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