Malicious PDF — malware analysis report

Static analysis result for SHA-256 50c7c5c9ce80cbe9…

MALICIOUS

PDF

36.4 KB Created: 2021-07-03 22:57:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 3ce0e4614b298205f9f270b03054786a SHA-1: cc31a8b71b1fc62d256cc0979ca60791e10d53f1 SHA-256: 50c7c5c9ce80cbe90eea1b7f448fb68bb087dbba5c145c9e478439496689051f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting "free generators" for popular games. The primary lure URL, http://netcdn.tw/app/406889139/get-free-spins-coin-master-game-hack, is flagged as a known malicious redirector. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting potentially harmful sites, likely to download further malware or engage in scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/406889139/get-free-spins-coin-master-game-hack In PDF document text
    • http://tasleemdubai.com/userfiles/files/rbx-earn_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/voodygamescom-roblox-hack_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/roblox-how-to-kick-players-with-cheat-engine_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/can-you-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/coin-master-free-spins-link-no-verification_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/free-game-pack-coin-master_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/how-to-play-minecraft-with-friends-for-free_GM479516143.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/tiktok-viewer-free_GM835599320.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/can-robux-hacks-ruin-your-computer_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/coin-master-golden-cards-hack_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/seven-roblox-hack_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/coin-master-hack-app-download-free_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_off000038fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38FE 22852 bytes
SHA-256: c95c89651010f82418682557d251cbf144138f6c477f02a0e8c997c1caa4cded
font_01_sfnt_off00006c33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C33 18176 bytes
SHA-256: 4615fa8d24c7ab701dc83bbe602e927cac2a2c7f7d4d6f21c8af2f2227b09e12

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