Malicious PDF — malware analysis report

Static analysis result for SHA-256 24eecb3223651b43…

MALICIOUS

PDF

44.1 KB Created: 2021-06-03 04:21:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 33e73d8e3ef073d72ead8ebb395071fa SHA-1: ae3884f1d92e4369377831d7c16ef25e8628bfad SHA-256: 24eecb3223651b43b8b448d6884dcb4140271828a4860cc8b34403c882b16231
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as a game hack generator. The heuristic firings indicate a malicious redirector and a lure for game hacks. While no scripts were extracted, the embedded URLs are the primary indicators of malicious intent, likely leading to further compromise or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/479516143/how-to-use-wurst-game-hack In PDF document text
    • https://encounternepal.com/userfiles/files/minecraft-skins-download-free_GM479516143.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/free-roblox-app_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/coin-master-game_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/free-coin-app_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/tiktok-free-fans_GM835599320.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/minecraft-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/coin-master-website_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/robux-online_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/free-robux-without-offers_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
font_00_sfnt_off000052e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52E3 24612 bytes
SHA-256: 0ca2b6b544e83ca173507ed328fa89a9f7cb12e4a19755d39bc7e1d59e3e868d
font_01_sfnt_off00008a47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A47 18052 bytes
SHA-256: a68273e95d9ad8d33f951bd54b666654e65060786c21df7f799ba901f89a275f

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