Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dfbea7e47e9df66…

MALICIOUS

PDF

46.8 KB Created: 2021-06-08 14:47:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 2792352dbc740149e7c514f457947698 SHA-1: 42af18ce5ebfb4349e559d693565456ec9d6fdb3 SHA-256: 3dfbea7e47e9df66c8d64023d47e132b0cec8db70fd538d962fdfb918be38968
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs that lure users with promises of game cheats and generators, such as 'Roblox Pc Cheats'. These URLs redirect to external sites, likely to host further malicious content or phishing pages. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.tw/app/431946152/roblox-pc-cheats-game-hack PDF link annotation
    • http://feuerwehr-rheinau.de/images/coin-master-hack-club_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/coin-master-free-spins-iphone-2021_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/pubg-uc-live_GM1330123889.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/free-robux-2021-no-scam_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/app-master_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/how-to-get-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/hack-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/coin-master-time-hack_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/pubg-uc-30_GM1330123889.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_004_off00005267.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5267 28572 bytes
SHA-256: fcd1b64f2b047c9eac54d89a66d15f1541405e7865a303abd73a2a4c3eb4c689
font_01_sfnt_off00009403.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9403 18436 bytes
SHA-256: 6a125c6df86e25b7b459077e0a4aa990340e13f59d6434ee8ef93910ed074aeb

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