Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a7ac59bc4c9db40…

MALICIOUS

PDF

34.7 KB Created: 2021-06-26 01:32:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 9c5551d9665492875fc4e79ac3239c0d SHA-1: 323f5612fe680397c4df553a5dff70a57be53e82 SHA-256: 3a7ac59bc4c9db40ca94a35b9805c636c4f0cb2e2946db5efbac7a0615e51a6d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF document contains a lure related to hacking Roblox games and impersonates Facebook, directing users to a suspicious URL. The ML classifier strongly flagged this PDF as malicious, and the embedded URL is associated with credential phishing or malware distribution. No scripts were extracted, but the document structure and heuristics indicate a malicious intent to trick the user into navigating to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: http://netcdn.co/app/431946152/how-to-hack-rpg-games-on-roblox-game-hack.
  • 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/how-to-hack-rpg-games-on-roblox-game-hack PDF link annotation
    • http://library.unissula.ac.id/fe/repository/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-to-hack-roblox-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/can-you-get-roblox-on-xbox-360-for-free_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/lucky-patcher-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-hack-ios-without-verification_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-robux-no-download-no-verification_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/roblox-hack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/coin-master-hack-version-ios_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/coin-master-cheat-codes-free_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/roblox-demon_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/pubg-uc-10_GM1330123889.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/is-roblox-free-on-pc_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-to-get-free-coins-for-coin-master_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_off00002edb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EDB 22688 bytes
SHA-256: f506bc740aac39d236ac7ecb72e9806a0606c2d77ffe22467b7ae6fdcf12c554
font_01_sfnt_off000061d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D4 19256 bytes
SHA-256: ff2aafd0919f2a56b207a106df0f17d24f93c2a5026664d92256c07c37c4c305

Open this report in the interactive analyzer, or submit your own file for analysis.