Malicious PDF — malware analysis report

Static analysis result for SHA-256 00337120056d072a…

MALICIOUS

PDF

37.2 KB Created: 2021-06-26 12:04:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c1a59a8bfa955ad7db9422707afa399c SHA-1: 30843a2a87e8d673d99b751b7de5d3136c810933 SHA-256: 00337120056d072af53ff6968849907c2249572e825cb4fdc109bfa1e5d8d35a
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links and a specific URL, all pointing to sites offering free in-game items or hacks. The heuristic PDF_SEO_LINK_FARM indicates a large number of such links, suggesting a coordinated effort to direct users to potentially malicious download sites. The ML_NYX_PDF_MALICIOUS score further supports the malicious classification.

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-roblox-account-with-obc-lifetime-2021-game-hack PDF link annotation
    • https://rsudmangusada.badungkab.go.id/new/public/ckfinder/userfiles/files/how-do-i-get-robux_GM431946152.pdfIn PDF document text
    • https://rsudmangusada.badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • https://rsudmangusada.badungkab.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • https://rsudmangusada.badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-connection-lost-hack_GM406889139.pdfIn PDF document text
    • https://rsudmangusada.badungkab.go.id/new/public/ckfinder/userfiles/files/como-hackear-coin-master-gratis_GM406889139.pdfIn PDF document text
    • https://rsudmangusada.badungkab.go.id/new/public/ckfinder/userfiles/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • https://rsudmangusada.badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://rsudmangusada.badungkab.go.id/new/public/ckfinder/userfiles/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://rsudmangusada.badungkab.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-roblox-in-real-life_GM431946152.pdfIn PDF document text
    • https://rsudmangusada.badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • https://rsudmangusada.badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-programmers_GM406889139.pdfIn PDF document text
    • https://rsudmangusada.badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-daily-free-rewards_GM406889139.pdfIn PDF document text
    • https://rsudmangusada.badungkab.go.id/new/public/ckfinder/userfiles/files/hacked-client-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://rsudmangusada.badungkab.go.id/new/public/ckfinder/userfiles/files/june-29-coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://rsudmangusada.badungkab.go.id/new/public/ckfinder/userfiles/files/mcpe-optifine_GM479516143.pdfIn PDF document text
    • https://rsudmangusada.badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-hacker-club_GM406889139.pdfIn PDF document text
    • https://rsudmangusada.badungkab.go.id/new/public/ckfinder/userfiles/files/how-to-get-gojirasaurus-free-ancient-earth-roblox_GM431946152.pdfIn PDF document text
    • https://rsudmangusada.badungkab.go.id/new/public/ckfinder/userfiles/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://rsudmangusada.badungkab.go.id/new/public/ckfinder/userfiles/files/password-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://rsudmangusada.badungkab.go.id/new/public/ckfinder/userfiles/files/how-to-hack-roblox-with-kali-linux-virtualbox_GM431946152.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_off000034ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34AE 23356 bytes
SHA-256: a2102b9ae0a39c237149be51c7db6f678bf96ee3bce8a3c8623e762404a3e5d0
font_01_sfnt_off000069a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69A0 20040 bytes
SHA-256: 830835bffb522096db02c545260fb6b88de5ee82dada2c5053eaf93fdc2b682e

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