Malicious PDF — malware analysis report

Static analysis result for SHA-256 948a4b6422dd3691…

MALICIOUS

PDF

50.0 KB Created: 2021-05-17 22:31:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 08178227f7e364ead7832353a5c17114 SHA-1: e006889c8ea8624e85cf3f7943ded9131692be5a SHA-256: 948a4b6422dd3691dc88f294177db687835eaa9db1ffd6bc24c1e2ceec23d7da
122 Risk Score

Malware Insights

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

The PDF document contains multiple links to game hack generators, specifically targeting 'Roblox Free Robux Hack'. It also includes an instruction to disable security software, a common tactic to bypass defenses. The primary malicious URL identified is https://netcdn.xyz/app/431946152/roblox-free-robux-hack-game-hack, which likely serves as a landing page for a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8594

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.
  • 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
  • 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-free-robux-hack-game-hack PDF link annotation
    • http://lib.unwahas.ac.id/repository/how-to-hack-coin-master-game-ios_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/games-like-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/get-robux-today_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/coin-master-hack-without-downloading-apps_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/coin-master-free-spins-cheat-deutsch_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/fb-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/minecraft-pe-free-download-android_GM479516143.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/how-can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/coin-master-gift-link-hack_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/coin-master-hack-spin-generator-tool_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/coin-master-free-spins-links-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000495b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x495B 25788 bytes
SHA-256: 57b15fdfdd11b5862e86c858157a8c75c5ab784a4f497a89fc20de1b1a36bd9c
font_01_sfnt_off0000849e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x849E 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008e84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E84 7448 bytes
SHA-256: a76ff9b4805dcff342f7268a16e2e3c2ff2b31b96c381fe4deb6ceea777bce90
font_03_sfnt_off0000a067.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA067 18488 bytes
SHA-256: 44072fbb5c45a7604268a2c6438126b7db3492802a9c8847ecb07522db400813

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