Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cdca5d78fa63409…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 16:19:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5c932525c33ae9a15e3fe969ea017550 SHA-1: 19d4d09bcbceffef62d464547a41a79d597cf1a0 SHA-256: 1cdca5d78fa63409c363e45e23f6b655f8b79991b86bb72924a0f42839a9904c
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-risk heuristic indicating it links to a game hack generator lure. The document body and embedded URLs point to various game-related hacks and generators, ultimately redirecting to the IOC URL. This suggests a social engineering tactic to trick users into downloading potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.tw/app/479516143/minecraft-pe-hack-client-ios-game-hack PDF link annotation
    • http://www.library.gkigadingserpong.org/repository/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-gaben-hack_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-roblox-passwords_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/minecraft-java-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-immortal-hack-blood-of-iron_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-links-for-free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-hack-unlimited-spins-apk-download_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/como-hackear-robux-facil_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-free-robux-game-no-password_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-free-gift-cards-list_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-to-hack-into-bloxburg-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/minecraft-windows-10-hack-client-2021_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-obby_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_off000031d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31D7 22796 bytes
SHA-256: 44f83ad96e28c3bd23f36ab412b64c3b6fc1b8d1e01d1f69aacbac1d074d2f1f
font_01_sfnt_off000064b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64B7 18396 bytes
SHA-256: 55df802e59d6610b41512bdd6f439a6918b0909585890d481d3eba566528df0e

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