Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab77a99e35ec1a38…

MALICIOUS

PDF

42.8 KB Created: 2021-05-13 17:00:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: de79b966f23dbf9834280b3c169cef69 SHA-1: 6c27416d978e1365d948d9b0023c4cc8e34bf3dc SHA-256: ab77a99e35ec1a380b88bbf6d86d7058c3e59bc80ede3c256442e15b7bc8dad8
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains multiple links to external websites, primarily luring users with game hacks and generators. The presence of a remote support tool lure suggests an attempt to gain unauthorized access or deliver a secondary payload. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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/479516143/minecraft-pe-hacks-game-hack PDF link annotation
    • http://techmobil.pl/images/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-hack-cheat-generator-coins-and-spins-unlimited_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/roblox-sexually-abused_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/hack-coin-pro-coin-master_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-hack-2021-app-download_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-free-spins-and-coins-today_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/cmaster-club-coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/free-robux-exe_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/how-to-get-minecraft-for-free-on-xbox-360_GM479516143.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-free-raid-link_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/roblox-robux_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/how-to-hack-someones-roblox-account-2021_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
stream_003_off00004c2c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C2C 25748 bytes
SHA-256: 030a8c3fbfa1ae43f01ec92a172b8aef182626e329e8ed08878483d1b2d06eda
font_01_sfnt_off00008698.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8698 17892 bytes
SHA-256: fda2b16deba9a1c4b3626a8ad3479d009d1f56903d8778c05817a0c1608b8b5f

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