Malicious PDF — malware analysis report

Static analysis result for SHA-256 efe95caf4883492c…

MALICIOUS

PDF

39.9 KB Created: 2020-04-04 06:21:34 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 65c53215517af56a90ff870f93dbfcb8 SHA-1: 3d50d50379dd1c01216c37d86e21610c4bae01f7 SHA-256: efe95caf4883492c68d0342765cd4b61bed44949bd09d9ff3c13e459638af8c4
62 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 point to other PDF files. This behavior is indicative of a link farm or SEO spam campaign, designed to drive traffic or potentially host malicious content. The embedded URLs suggest a lure related to 'sand casting defects and remedies', which is likely a pretext to encourage clicks. No scripts were extracted, limiting the analysis of direct payload delivery.

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://mservices832.com/uploads/1/3/1/3/131379015/131379015.html#sand+casting+defects+and+remedies+pd
    • http://sassychurch.com/uploads/1/3/0/4/130483625/7964468.pdf
    • http://fgccontracting.net/uploads/1/3/0/3/130323630/2249720.pdf
    • http://shahnazi.xyz/uploads/1/3/0/5/130589250/resawesaw-zusimuroj-jexorixagaxi-purono.pdf
    • http://itero3dlab.com/uploads/1/3/1/4/131406614/9925111.pdf
    • http://agencebreizstore.com/uploads/1/3/1/3/131383575/5df965cb8.pdf
    • http://ganjamomma.com/uploads/1/3/0/6/130621531/2e6bf.pdf
    • http://buyphilproperties.com/uploads/1/3/0/3/130323462/zapagozapu_sonepiwopoz_jemexevituki.pdf
    • http://riddlemethiswithplastics.org/uploads/1/3/0/8/130813632/nibuxobubadeb.pdf
    • http://luxurysalesmiami.com/uploads/1/3/1/3/131379394/gukupugalu-rubibadomifon.pdf
    • http://synergydx.net/uploads/1/3/0/8/130813948/df52da97.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_off0000765c.bin
41882483281f4282c437de99da15ac6101fbedd35857047ecd94233ad798a74f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x765C 7156 bytes

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