Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccb3f00d517990f8…

MALICIOUS

PDF

40.2 KB Created: 2020-04-11 09:21:19 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 5458a5cbccba279a2b20f5349341e0fc SHA-1: 66fd2e7f045f9af9037462b1f0292a1b509147b4 SHA-256: ccb3f00d517990f88d3f50f02b15edf5c0cbbb884fa597082c01cd100b124eaa
62 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, a technique often used to create SEO farms for malicious redirection. The primary heuristic identified a large link farm pointing to various PDF files on different domains. The embedded URL and the document body also point to external resources, suggesting a delivery mechanism that relies on user interaction with these links.

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://tcsonline.net/uploads/1/3/1/6/131607805/131607805.html#verbal+irony+in+macbeth
    • http://ninjadiveteam.com/uploads/1/3/1/4/131453753/pobok.pdf
    • http://vibeci.com/uploads/1/3/0/6/130603928/5efe1e.pdf
    • http://ms-kc.com/uploads/1/3/0/6/130639706/totijez.pdf
    • http://hcfaith.org/uploads/1/3/1/3/131381166/30168b551.pdf
    • http://loica-legrand.com/uploads/1/3/1/6/131606227/290005.pdf
    • http://cetkadienstleistung.de/uploads/1/3/0/5/130590756/tinukokuroxa.pdf
    • http://foefloridadistrict-2.com/uploads/1/3/0/7/130740622/3814137.pdf
    • http://justinmichaelmarsh.com/uploads/1/3/0/9/130969726/9d38fb.pdf
    • http://xisersolucionesinmobiliarias.com/uploads/1/3/0/7/130738989/nutomi_fuxuz_satagidekan_votesijuwizi.pdf
    • http://primerbatallon.com/uploads/1/3/0/5/130539726/dcec253.pdf
    • http://thesubscriptionlady.com/uploads/1/3/0/9/130969762/ebd484ba387fbd.pdf
    • http://saintandrewchristmasnovena.com/uploads/1/3/0/7/130739845/95538.pdf
    • http://xisersolucionesinmobiliarias.com
    • 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_off00006ce4.bin
f83fd5cf0d90c0bcd4dcc46888119208e25a1c32c66334338b3bf553833c29dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE4 7928 bytes
font_01_sfnt_off00008b8e.bin
3b6e56fc867960537a3c50726df58641bb8e1e109fe02107f0a92ce7672cb039		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B8E 1848 bytes

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