Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e8ec5e30b239383…

MALICIOUS

PDF

34.7 KB Created: 2020-03-30 22:46:25 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ad4cc81df980387c10dc951ae5518a94 SHA-1: f7b18ae8a2737d03f22e56ed7ef7b3b8f910c20f SHA-256: 9e8ec5e30b239383e3024aefe74a4a319f92185602653e6eeb73c4e4b947e6f5
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are numerically or generically named, suggesting a link farm or SEO spam tactic. The document body, though partially corrupted, mentions a common household repair, likely intended as a lure to direct users to these external sites. No scripts were extracted, and the primary malicious activity appears to be the distribution of numerous URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://albertatreatingchemicals.ca/uploads/1/3/0/5/130539798/130539798.html#how+to+replace+whirlpool+microwave+door+switch
    • http://anncharlish.com/uploads/1/3/0/5/130590373/wibolujawoderi.pdf
    • http://betheenginebubble.com/uploads/1/3/0/9/130969542/toleforasorawifamu.pdf
    • http://oliver-design.com/uploads/1/3/0/5/130543057/gogunoditu_vovuma_tepizozegera_zobeno.pdf
    • http://thebeginningyears.com/uploads/1/3/0/5/130589285/0739252c75d5a21.pdf
    • http://brightwaylearningcenter.com/uploads/1/3/0/5/130551135/77517ed5.pdf
    • http://g500ww.com/uploads/1/3/0/7/130775758/2834550.pdf
    • http://actwithpurpose.ca/uploads/1/3/0/3/130323478/7643687.pdf
    • http://nflar.club/uploads/1/3/0/5/130546196/eec76c4d9a9f.pdf
    • http://hafadavid.com/uploads/1/3/1/3/131379035/3635298.pdf
    • http://dieselgabon.com/uploads/1/3/0/6/130621874/vujegi_pefokef_sasinebodipub.pdf
    • http://whids.com/uploads/1/3/0/7/130775558/lefalefasel-limaduzelot-kopomovexoru-sudaratejip.pdf
    • http://homebrewerydiy.com/uploads/1/3/1/4/131438693/35da5450445732c.pdf
    • http://kmcreecy.com/uploads/1/3/0/7/130740084/nosifagurazono.pdf
    • http://microbiotechspace.com/uploads/1/3/0/6/130639599/kafewugofix_finuz_rezugeta.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_off00006116.bin
45c4b20becc8220d4eb84bea09fc4595a0fe82582989afeb0c31ad9fdb43e123		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6116 7220 bytes

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