Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bd58f5f8d46e22a…

MALICIOUS

PDF

44.3 KB Created: 2020-04-06 09:48:18 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 78f408105883755ceb973d47a4f95299 SHA-1: 2d94515f098785ee435bcd625f841432b18b4249 SHA-256: 7bd58f5f8d46e22ac588e54f542dc7dcfcd64c13825c06bbaf2eede329ded062
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, a technique often used for SEO manipulation or to distribute further malicious content. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies this behavior. The document body contains garbled text and references to 'Salem witch trials dbq documents', suggesting a lure to disguise the malicious intent. 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://taticoffee.nl/uploads/1/3/0/8/130874011/130874011.html#salem+witch+trials+dbq+documents
    • http://ambersierra.com/uploads/1/3/0/5/130589048/tukajuvurinunupik.pdf
    • http://culturesolution.com/uploads/1/3/0/4/130489423/3ea1db5586cac.pdf
    • http://tangledupinbluesclothing.com/uploads/1/3/0/4/130483384/nupidogixejitotapu.pdf
    • http://juleeklinemarketing.com/uploads/1/3/0/9/130969989/maregeluxe.pdf
    • http://pakpashtoon.com/uploads/1/3/0/6/130620393/8869568.pdf
    • http://dalmatiansofkentucky.com/uploads/1/3/1/4/131482993/kanes.pdf
    • http://waterinnovationsgroup.com/uploads/1/3/0/3/130323400/87760c0b55db.pdf
    • http://one2twofourstayinsideformed.com/uploads/1/3/0/5/130588807/475eb54553d1e.pdf
    • http://peterbrathwaite.com/uploads/1/3/0/5/130550982/a2fb4a9a6.pdf
    • http://meghannlaitherapy.com/uploads/1/3/0/6/130620737/2556942.pdf
    • http://sergioborrero.com/uploads/1/3/0/7/130776529/povotaratamikuj-kariponutonar.pdf
    • http://duncangreenphotography.com/uploads/1/3/0/7/130776082/4b45660406d8d.pdf
    • http://tenniswithandy.com/uploads/1/3/1/4/131453735/d058504fe.pdf
    • http://ikincielparcaci.com/uploads/1/3/0/5/130543256/2579a.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_off00006efb.bin
141b69278f459f6b9b5e10580241d8758c826e2f1aa395e3a0829cbaf08befaf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EFB 8252 bytes
font_01_sfnt_off00008ed7.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8ED7 16036 bytes

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