Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e0225f134736d82…

MALICIOUS

PDF

32.0 KB Created: 2021-07-19 16:35:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 006f3976ae91df4e34903da438a21d71 SHA-1: c3f068c3f5188a6c247592b0dd62fc90e8f76e72 SHA-256: 6e0225f134736d82fd1d6e19e8a38afce98be33838bce7ac5e9b48c0a57b66f7
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/free-robux-no-verification-needed-game-hack PDF link annotation
    • https://goodtools.tw/upload/files/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • https://goodtools.tw/upload/files/minecraft-multiplayer-free_GM479516143.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-get-free-robux-2021-no-human-verification_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_off00002907.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2907 21740 bytes
SHA-256: 2a31397fe2d591a6d17dde6f9997acc40811685f77d1acb9e113ef3e1beaadda
font_01_sfnt_off000058d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58D4 18960 bytes
SHA-256: f84c00a5f4de0f0f56267fefbe81f6503166d680d0fb608a7d78e26982bbbcac

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