Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8b31539809d804f…

MALICIOUS

PDF

41.7 KB Authoring application: OpenOffice.org
MD5: beb4826da8ef076f59b84df481232781 SHA-1: e61410a16ef50f8042d188fcdd453059a1d7653d SHA-256: f8b31539809d804f7259ac5cda175bd574596d82ba5b024c65884be35c8cf1b3
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified as a link farm. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or SEO abuse. The embedded URLs are the primary indicators of compromise, directing users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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 https://ruxenozekaxurup.weebly.com/uploads/1/3/0/2/130270893/4607044.pdf
    • https://nudonetokevokim.weebly.com/uploads/1/3/0/5/130588343/1716439.pdf
    • http://noxufa.bslg.ru/uploads/2020/01/27/mobodopawunar_barogumif_pekiluwedel_ligarulenuzapen.pdf
    • http://revanchy.ru/uploads/2020/01/28/9ea4a07ab0.pdf
    • https://manupezali.weebly.com/uploads/1/3/0/3/130313173/wutorifoxo-zipojosu.pdf
    • http://boweridute.andrusha.xyz/uploads/2020/01/28/notajiv.pdf
    • http://sanantonioholyfamilychurch.weebly.com/uploads/1/3/0/5/130551262/larip.pdf
    • http://tovarioseni13.fun/uploads/2020/01/27/925139a2bdc679.pdf
    • http://kanub.fonariky.ru/uploads/2020/01/28/4158997.pdf
    • http://lamaz.bibaiboba.online/uploads/2020/01/28/058553eff.pdf
    • http://shinermotorsales.com/uploads/1/3/0/4/130488332/4867963.pdf
    • https://fapesobajikom.weebly.com/uploads/1/3/0/5/130590499/nojabusufopekulor.pdf
    • http://kepupew.ukrainian-girls.top/uploads/2020/01/29/2831423.pdf
    • http://xiri.vulkan-azart777.online/uploads/2020/01/27/364dba40d0c.pdf
    • http://gateway-3ds.ru/uploads/2020/01/27/8c7430cd2e.pdf
    • http://wiw.freemservice.com/uploads/2020/01/27/5340852.pdf
    • http://adelmanspenguins.weebly.com/uploads/1/3/0/4/130476320/milimapukugojabub.pdf
    • http://nicolitulk.com.au/uploads/1/3/0/2/130287881/130287881.html#audi+a4+2004+workshop+manual
    • http://adelmanspenguins.weebly.com/uploads/1/3/0/4/130476320/mil

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000014eb.bin
c2176124afaa4bd2214a252c3207f1d4297c45efae4cb1143dc60680f68534e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14EB 8340 bytes

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