Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c67e83daad72576…

MALICIOUS

PDF

44.1 KB Created: 2021-05-11 01:32:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 4729454b77999b6d69ed92a1b23b3c10 SHA-1: 104ca21a7a14f2c5ba20451d3c9ed5c44ca21e00 SHA-256: 2c67e83daad72576087f94a3f146e562461fa67410a54ef09c37bb884a0b3ee5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, with a primary focus on 'game hacks' and 'free generators' for popular games like Roblox and Minecraft. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates this is a social engineering tactic to trick users into visiting malicious sites. While no scripts were directly extracted, the embedded URLs suggest a potential for downloading further malicious content or redirecting to phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

Heuristics 4

  • 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.
  • 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.xyz/app/431946152/roblox-adopt-me-hack-game-hack PDF link annotation
    • https://fib.ub.ac.id/sac//repository/minecraft-java-account-free_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/master-coin-hack-app_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/i-want-free-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/8bp-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/how-to-play-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/android-coin-master-3433-apk-hack_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-executors-for-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-hack-online-2021_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/robux-for-surveys_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-roblox-premium_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-free-spins-link-31-march-2021_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/coin-master-daily-gifts_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
stream_003_off00004ae7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AE7 26352 bytes
SHA-256: 3af4fa5cb8a786ce37587f79defad8373ab25094d5701fa51d02bdab1bfa4dda
font_01_sfnt_off00008842.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8842 18832 bytes
SHA-256: 4d658ccafa0b893d8d7fed2f8c747f895118d61cffd562c1959dd86f9709654a

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