Malicious PDF — malware analysis report

Static analysis result for SHA-256 e148676ad4b653d1…

MALICIOUS

PDF

47.4 KB Created: 2021-05-15 13:36:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 9f054905793b561e4fce16c85ac0a063 SHA-1: ea946ca24400d4bc5c928ab8eb69be4948376157 SHA-256: e148676ad4b653d106be1fdd5b79e62159265bc822b4fbb97e424abea257fc5a
82 Risk Score

Malware Insights

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

The PDF document contains a lure for a 'Roblox Hacked Version Download' and directs users to a URL that promises game hacks. This is a common social engineering tactic to trick users into downloading malicious files. The ML classifier also flagged this PDF as malicious, increasing confidence in its malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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-hacked-version-download-game-hack PDF link annotation
    • http://www.gzsuihe.com/Public/upload/editorfiles/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.gzsuihe.com/Public/upload/editorfiles/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.gzsuihe.com/Public/upload/editorfiles/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.gzsuihe.com/Public/upload/editorfiles/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://www.gzsuihe.com/Public/upload/editorfiles/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.gzsuihe.com/Public/upload/editorfiles/how-to-duplicate-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://www.gzsuihe.com/Public/upload/editorfiles/how-to-play-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • http://www.gzsuihe.com/Public/upload/editorfiles/roblox-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.gzsuihe.com/Public/upload/editorfiles/claim-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://www.gzsuihe.com/Public/upload/editorfiles/minecraft-free-download-mac-full-version_GM479516143.pdfIn PDF document text
    • http://www.gzsuihe.com/Public/upload/editorfiles/win-free-robux_GM431946152.pdfIn PDF document text
    • http://www.gzsuihe.com/Public/upload/editorfiles/minecraft-free-android_GM479516143.pdfIn PDF document text
    • http://www.gzsuihe.com/Public/upload/editorfiles/coin-master-free-in-app-purchases-jailbreak_GM406889139.pdfIn PDF document text
    • http://www.gzsuihe.com/Public/upload/editorfiles/coin-master-hack-version-download_GM406889139.pdfIn PDF document text
    • http://www.gzsuihe.com/Public/upload/editorfiles/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://www.gzsuihe.com/Public/upload/editorfiles/free-minecraft-java-edition-account_GM479516143.pdfIn PDF document text
    • http://www.gzsuihe.com/Public/upload/editorfiles/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://www.gzsuihe.com/Public/upload/editorfiles/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.gzsuihe.com/Public/upload/editorfiles/hack-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://www.gzsuihe.com/Public/upload/editorfiles/freespinandcoinblogspotcom-2021-11-coinmasterfreespinandcoinlinkshtml_GM406889139.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_003_off00004bb3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BB3 26460 bytes
SHA-256: eb6cd540b111165ab96cb87f9ffe06b521d12cab6d474f8aa51b32ef61f655ad
font_01_sfnt_off000087f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87F6 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off0000949e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x949E 18940 bytes
SHA-256: 045b97c0477fa0a77fe25df190f3dc8d91b636a592878cab4dc6788bf6280dbe

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