Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb836bb5630d5e86…

MALICIOUS

PDF

36.1 KB Created: 2020-04-01 18:41:21 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ffca4d8407c983355ae9dabe66211b6b SHA-1: 0fc43579a1d5b68ac252917bfa14ecc0c399d7fa SHA-256: fb836bb5630d5e86cf5d1e89e0a1ce874c02765f7a76fbc4a7a0663d039885ad
62 Risk Score

Malware Insights

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

The PDF contains a large number of external links, a technique often used for SEO spam or to distribute further malicious content. The document body mentions 'architecture form space and order book pdf download', suggesting a lure to entice users to click on the embedded links. The primary heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, with 'gatesvillehsgamingcon.info' being a dominant host. 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://impact-active.com/uploads/1/3/0/7/130775092/130775092.html#architecture+form+space+and+order+book+pdf+download
    • http://gatesvillehsgamingcon.info/uploads/1/3/1/1/131163651/zifilimuxoron_tuxiguwegojijok.pdf
    • http://jrtproductions.com/uploads/1/3/0/6/130622091/sovezakologul.pdf
    • http://pacificcarehome.net/uploads/1/3/0/5/130546244/a7bf89dabbb4.pdf
    • http://listingalchemy.com/uploads/1/3/1/3/131383294/poxefomupu_fatigejutul.pdf
    • http://newchicagoschool.net/uploads/1/3/0/7/130775049/vesen-wuputavizaxa.pdf
    • http://radioavan.com/uploads/1/3/0/6/130605440/mawuda.pdf
    • http://carpetcleaning719.com/uploads/1/3/0/2/130287242/mulum_makebejitu_nirali.pdf
    • http://black365designs.com/uploads/1/3/0/7/130776520/xefexadumek.pdf
    • http://saintaugustinenews.com/uploads/1/3/0/4/130476859/cf42e1cfb5b9db5.pdf
    • http://whereiskara.com/uploads/1/3/0/6/130603709/994f5.pdf
    • http://bspetshop.com/uploads/1/3/0/2/130287548/gedewokidabenexuvi.pdf
    • http://hamdenhallfaces.com/uploads/1/3/0/7/130776580/6440764.pdf
    • http://naviencehairco.com/uploads/1/3/0/5/130590589/nuvinosizasiz.pdf
    • http://onedaywritten.com/uploads/1/3/0/5/130588240/5463952.pdf
    • http://accreditedestateplanningclasses.com/uploads/1/3/0/7/130776719/6788926.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_off00006370.bin
dc0e903e88aadc87bb1f8cfa0eca5c5ad0c3bf2158bb9a746b5d97b550b79fc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6370 8156 bytes

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