Malicious PDF — malware analysis report

Static analysis result for SHA-256 c01ec6d228c910a3…

MALICIOUS

PDF

54.3 KB Created: 2020-04-13 02:06:42 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3eb942c44a82e2de66a374fe15c08987 SHA-1: 9fef789109c11fea3e047ab52575c4fe5ce988dc SHA-256: c01ec6d228c910a3f7e8755492d2b6348bdb858f6693467e4520cd561d563b09
62 Risk Score

Malware Insights

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

The PDF contains a large number of external links to other PDFs hosted on various domains, indicating a link farm or redirection scheme. The heuristic 'PDF_SEO_LINK_FARM' strongly suggests this is a malicious attempt to manipulate search engine results or distribute content. The embedded URL 'http://correctivecare.net/uploads/1/3/0/5/130541137/130541137.html#factor+comun+binomio+formula' is part of this network. The document body contains garbled text and a reference to the same URL, further supporting the malicious intent.

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://correctivecare.net/uploads/1/3/0/5/130541137/130541137.html#factor+comun+binomio+formula
    • http://viholisticnutrition.com/uploads/1/3/0/5/130551463/443b1944d392.pdf
    • http://mkproclean.com/uploads/1/3/0/4/130489386/bunezoramirizej-fikusupex-nokevukunodugux.pdf
    • http://mindyjourney.org/uploads/1/3/1/3/131398094/gewukigem_xuxakovobakit.pdf
    • http://cofchrist.club/uploads/1/3/0/5/130545895/daduguvibikema.pdf
    • http://ship-of-theseus.org/uploads/1/3/0/4/130477805/gobumumaw.pdf
    • http://supertrampsale.com/uploads/1/3/0/7/130776805/0dd65cf5b.pdf
    • http://vegastourstop.com/uploads/1/3/1/4/131438667/9006603.pdf
    • http://tinkerhousetradingcompany.com/uploads/1/3/0/2/130289345/d36be.pdf
    • http://jacyntta.com/uploads/1/3/1/4/131407802/fokojesi.pdf
    • http://synergyhomebusiness.com/uploads/1/3/0/5/130550796/f982d1.pdf
    • http://aceafterschoolcare.com/uploads/1/3/0/6/130639690/nixejabef_zawove_pisata_gatabilub.pdf
    • http://baxrelax.com/uploads/1/3/0/2/130289773/desenuxeratofa-balemesujeda-bolok-lovukefogon.pdf
    • http://essentiallybergmann.com/uploads/1/3/0/2/130272981/fepasekajowajutes.pdf
    • http://brentritchie.com/uploads/1/3/0/2/130291702/6399376.pdf
    • http://supertrampsale.com/uploads/1/3/0/7/1
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008670.bin
3392e91b86bb501242da929a235e76b473bb9dea59a6177027e119a326e17b48		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8670 10232 bytes
font_01_sfnt_off0000aacd.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAACD 2652 bytes
font_02_sfnt_off0000b436.bin
81d43050ba91d49228ae231686423dfde62ccdfd6eb44243228859e1fb6bcaf7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB436 16408 bytes

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