Malicious PDF — malware analysis report

Static analysis result for SHA-256 bad30c90276d8cf8…

MALICIOUS

PDF

46.5 KB Created: 2021-06-03 13:29:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 005f71d549906d13748b58ca85b83ee8 SHA-1: a147ad12dbf02d175ac162b0b858a21fe4ce8b38 SHA-256: bad30c90276d8cf816d2ac3ca6d073c1fa36aae9af0b2196c62af331d01cd393
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a lure for a game hack generator, which is a common pretext for malware delivery. It also contains instructions to disable security software, indicating malicious intent. The embedded URL likely leads to a malicious download or exploit.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

Heuristics 6

  • 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.
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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 https://netcdn.online/app/431946152/earn-robux-online-game-hack PDF link annotation
    • http://library.yamasi.ac.id//repository/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-free-spin-and-trading-group_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-minecraft-account-and-password-2021_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-redeem-codes-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/minecraft-pe-free-download-android_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/minecraft-server-free-trial_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/pubg-uc-center_GM1330123889.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/minecraft-bedrock-download-pc-free_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-coin-master-spins-link-download_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/roblox-free-clothes-girl_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/minecraft-112-2-hacked-client_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005040.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5040 25456 bytes
SHA-256: b8fefbb88b7914507b58c832b0e4e418a26f0bda6ba9dfaae6061c91d5b824cd
font_01_sfnt_off000088ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88EF 2880 bytes
SHA-256: b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e
font_02_sfnt_off000092d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92D9 18272 bytes
SHA-256: e6eced877659066c34013b103860b906c86501a59a1910c9f6214b5af76174f4

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