Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1ec742d8fd87b78…

MALICIOUS

PDF

47.1 KB Created: 2020-04-19 00:27:51 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3b199e6110ef8528672b88629b74ea31 SHA-1: b673c8c91a1f23583841fcc2a852394216573eda SHA-256: f1ec742d8fd87b7896be12b3aa81fe30faab3b7f382de6243499c23d0f8fc4ea
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to similarly structured URLs on different domains. This indicates a link farm or SEO scam designed to drive traffic to various websites. The document body, though heavily obfuscated, contains references to 'image search app android' and the authoring application 'wkhtmltopdf', suggesting a lure to a fake application or service. 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://drobgyn.net/uploads/1/3/0/6/130620450/130620450.html#image+search+app+android
    • http://fitlifeaudio.com/uploads/1/3/0/6/130605376/kowovi-jasuvadafo-kezomojijuk-nuriku.pdf
    • http://cornwall2theandes.com/uploads/1/3/0/4/130477351/sajudukevod.pdf
    • http://volareestheticsbykali.org/uploads/1/3/0/6/130621223/dadodagiz_vivudizefulivi_vidikagite_bafodujuxasoziv.pdf
    • http://pondsandmore.net/uploads/1/3/0/5/130589064/34cbb075.pdf
    • http://empathizeothers.com/uploads/1/3/1/4/131453960/8174892.pdf
    • http://valleyfloors.com/uploads/1/3/1/3/131398219/8328724.pdf
    • http://kingfrozensrl.com/uploads/1/3/0/5/130546497/2295428.pdf
    • http://anitamua.com/uploads/1/3/1/6/131606305/af04f71.pdf
    • http://boxguru.co/uploads/1/3/0/7/130776241/9d4a561d185.pdf
    • http://casareport.info/uploads/1/3/0/7/130739140/vikibuza-kuluwuve-nidituwupe.pdf
    • http://abalonofcalifornia.com/uploads/1/3/0/6/130604251/8227691.pdf
    • http://neoliva.org/uploads/1/3/1/3/131382595/zewonoredenasew.pdf
    • http://casareport.info/uploads/1/3/0/7/130739140/vikibuza-kuluwuve-niditu
    • 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_off00009125.bin
92b6dd1e5bfe4ebda4aa1a8266572198dd79f7f3194c4f3e8d46f1a076858bb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9125 8084 bytes

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