Malicious PDF — malware analysis report

Static analysis result for SHA-256 411dd83b9c570ce7…

MALICIOUS

PDF

42.2 KB Created: 2021-05-16 19:37:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 3bd93fccd432ba7aa039c4ebc690d920 SHA-1: 35094d376c57464ee849b8570f064e220fe8aa5f SHA-256: 411dd83b9c570ce7f3cc7399ec8eca5e2fe0122e2793e3239deda3264fc8535a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users to external websites, masquerading as game hack generators. The primary link directs to 'netcdn.xyz', a known malicious redirector. The document body, though partially corrupted, contains references to 'Roblox Hack' and the same malicious URL, reinforcing the lure. The presence of multiple PDF-specific heuristics indicating malicious redirector links and game hack lures strongly suggests a phishing or scamming attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/431946152/roblox-hack-ga-game-hack In PDF document text
    • http://montchanintt.fr/images/roblox-executor-free-download_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://montchanintt.fr/images/coin-master-hack-355_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/hack-coin-master-using-cheat-engine_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/how-to-hack-coin-master-ios-jailbreak_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/how-to-get-free-unlimited-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/free-coin-app_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • http://montchanintt.fr/images/free-robux-now_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/how-do-you-get-roblox-money_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/how-do-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://montchanintt.fr/images/hack-coin-master-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • https://rblx.landIn 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_off000044a3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x44A3 27108 bytes
SHA-256: 468d372be6e8deba507fb96d6c31f3aac3e3240d2b16971978d0c4be74ac7c56
font_01_sfnt_off00008295.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8295 18184 bytes
SHA-256: 3275d650180bfb45a9fb7d5756aac43dcbbafe87c7818dab7a1b2e1f44194404

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