Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e4d80749d6b3a2a…

MALICIOUS

PDF

34.9 KB Created: 2021-06-30 09:59:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 0828e14f250dae26b5c3cbd68fece338 SHA-1: b09a5045561e258559468517c276d05d1f8f385c SHA-256: 6e4d80749d6b3a2a5b82a643e588f46c2219c2842a77777f72cb4064d5a4ae3e
102 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which are part of a link farm designed to appear as legitimate guides for obtaining free Robux or game cheats. The primary URL, http://netcdn.co/app/431946152/free-robux-robux-zone-wordpress-game-hack, and the numerous links hosted on shoruq.sch.ae suggest a phishing or scam attempt to lure users to malicious websites. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://netcdn.co/app/431946152/free-robux-robux-zone-wordpress-game-hack PDF link annotation
    • http://shoruq.sch.ae/userfiles/files/how-to-hack-free-roblox-with-kali-linux_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/roblox-booga-booga-cheats_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-heads-in-roblox_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/como-hackear-el-juego-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/can-you-hack-your-own-roblox_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/best-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-roblox-exploit-that-lets-you-use-gears_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/roblox-free-tops_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/play-roblox-for-free-on-google_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-to-hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/robloxfun-com-generator_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-to-get-free-robux-roblox-generator_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E0B 23200 bytes
SHA-256: 74220d4601c3e612b6e57b7dda7ca16687b7c5869c334b88a82fe36cda49e482
font_01_sfnt_off00006213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6213 19360 bytes
SHA-256: 821d413909da5e1e7f58d2b79d70d328ce0d8d1f8f1d82b63ac3d04fab9e2813

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