Malicious PDF — malware analysis report

Static analysis result for SHA-256 69df764b4c0fae23…

MALICIOUS

PDF

32.7 KB Created: 2021-07-19 17:10:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 9ec54086ad6a1223595e9581561a3c64 SHA-1: cc845aeeab387b1fcd0323d0d3b3e75d5b05e27b SHA-256: 69df764b4c0fae23cdb59867f847c0c15a1ecf8c9b1e702eecf3e7bf559af375
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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 http://netcdn.tw/app/431946152/mobihack-net-roblox-hack-game-hack PDF link annotation
    • https://shjbottle.com/upload/files/how-to-get-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • https://shjbottle.com/upload/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • https://shjbottle.com/upload/files/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • https://shjbottle.com/upload/files/claim-free-robux_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/free-tiktok-followers-no-human-verification_GM835599320.pdfIn PDF document text
    • https://shjbottle.com/upload/files/free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://shjbottle.com/upload/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/free-minecraft-skin-packs_GM479516143.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_off000028db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28DB 22704 bytes
SHA-256: ab49f7f8a2970fb710d88a3bc39c7ec4e080182a0f5d6b9baf9507cff59e5dd6
font_01_sfnt_off00005ba6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BA6 18952 bytes
SHA-256: eaa376580ef2471b72a923b4e976f2aeead2b1a901135636722948f13097cdd4

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