Malicious PDF — malware analysis report

Static analysis result for SHA-256 d64f8a5e822922ab…

MALICIOUS

PDF

47.6 KB Created: 2020-04-17 00:46:34 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 56c414e3ba8807a270a951cba16154bd SHA-1: 90df5a3de633f7cab38466dc2166d4df4246bb33 SHA-256: d64f8a5e822922ab3f939d18f228830d5fd588f4c019121277ed4cc6153ec2bd
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 follow a pattern suggesting an SEO spam or phishing campaign. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, with 'legacycpadvisors.net' being a dominant host. The embedded URI 'http://shoreditchsocial.com/uploads/1/3/0/6/130620581/130620581.html#interim+reporting+gaap' further supports the lure of accessing external content. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

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://shoreditchsocial.com/uploads/1/3/0/6/130620581/130620581.html#interim+reporting+gaap
    • http://legacycpadvisors.net/uploads/1/3/0/5/130588701/bopozadefa.pdf
    • http://vistarapainting.com/uploads/1/3/0/9/130969110/4745701.pdf
    • http://atlantaescaperooms.com/uploads/1/3/0/6/130621205/xokiwisas.pdf
    • http://connorlumley.com/uploads/1/3/0/5/130544379/zeladikage.pdf
    • http://seavyfarms.com/uploads/1/3/0/2/130288761/1713626.pdf
    • http://bronlabs.com/uploads/1/3/0/3/130313242/nugejag_jifaz.pdf
    • http://brokeboysociety.com/uploads/1/3/1/4/131406621/2159333.pdf
    • http://makepotusgreatagain.org/uploads/1/3/1/3/131379168/e27d6.pdf
    • http://russellcase.net/uploads/1/3/0/8/130814104/1273890.pdf
    • http://rejuvenateyourmuscles.com/uploads/1/3/0/7/130740609/notab-mixudixafig-tikekigiboku-dejirezesitoxu.pdf
    • http://coppininternational.com/uploads/1/3/0/6/130621527/lovibi.pdf
    • http://anuep.com/uploads/1/3/0/5/130546294/givitajiw.pdf
    • http://rayconstructionllc.net/uploads/1/3/0/4/130476555/jalofiwupa.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008822.bin
ae7c5cd22bc6df9546edfda83985ddacd27b5a227e0456d40a7cd6652e314e7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8822 8468 bytes
font_01_sfnt_off0000a890.bin
e91619dfd4c72a85464d95ef1ba4e67df13020651c42071bafbe521a61d9f7fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA890 2652 bytes

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