Malicious PDF — malware analysis report

Static analysis result for SHA-256 20eb0f8880f07762…

MALICIOUS

PDF

44.5 KB Created: 2020-04-27 06:28:03 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 01702f623e5c24d275a7d7595f880c04 SHA-1: 8e90a36e7a3579e35d8d09bd1239b8eff9486e3a SHA-256: 20eb0f8880f077624f23c1ba977d4d65dc9c5fa80605efde56ec4ada96df661e
92 Risk Score

Malware Insights

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

The PDF document is identified as malicious by an ML classifier and contains a large number of external links, many of which point to other PDF files hosted on similar domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The document's apparent purpose is to deceive users into clicking these links, potentially leading to malware downloads or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://grasbeinter-design.com/uploads/1/3/1/0/131070820/131070820.html#affidavit+of+support+and+consent+template
    • http://mushroomceuticals.com/uploads/1/3/0/7/130739470/58164e4405.pdf
    • http://sunnydaybistro.com/uploads/1/3/0/6/130621315/40a7647b5bfa94.pdf
    • http://johnnyvdrum.com/uploads/1/3/1/6/131606940/9c6901cfb8f51a.pdf
    • http://touch-of-madness.com/uploads/1/3/0/2/130288909/ce6b5d0b86b2d7.pdf
    • http://assuredmarketresources.com/uploads/1/3/0/6/130639790/1096498.pdf
    • http://dhevents.com/uploads/1/3/0/6/130621965/1638502.pdf
    • http://seniorinsuranceadvisor.net/uploads/1/3/0/8/130874467/78680.pdf
    • http://strenthbasedteambuilding.com/uploads/1/3/1/1/131163931/miwovape.pdf
    • http://harrishomesteadfl.biz/uploads/1/3/1/3/131398473/9856341.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_off0000888b.bin
7e869541e14874844310cfdc13e0801285d5d0f1e1513c044de29563a8fbb745		 pdf-font-stream PDF embedded font (sfnt) at offset 0x888B 7476 bytes

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