Malicious PDF — malware analysis report

Static analysis result for SHA-256 96623c7d9bf71fdb…

MALICIOUS

PDF

35.2 KB Created: 2021-07-05 22:30:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a3aff7d27febe8f83e922ac8c61366cc SHA-1: 9ba932adb86e3210d24edcfd37e8955ab7a71a17 SHA-256: 96623c7d9bf71fdbcf042675a65394c7c1fdb449ee3e12bb6a24e2620cc9ec83
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'free Robux' and game hacks, directing users to a suspicious URL. The ML classifier strongly indicated maliciousness, and the embedded URLs suggest a phishing or scam attempt. No scripts were extracted, but the document structure and embedded links are indicative of a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/blox-fish-free-robux-game-hack PDF link annotation
    • https://vieclamjapan.com/upload/files/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/can-simeone-hack-your-roblox-account-theough-discord_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/roblox-anniversary-free-card_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/30-robux-free_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/art-money-hack-roblox_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/free-robux-for-kids-that-can-hack-it_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/robux-generator-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/roblox-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/va-a-ser-hackeado-roblox-en-2021_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/play-roblox-for-free-on-google_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/roblox-bucks-hack-deutsch-erfahrungen_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_off000031a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31A2 22832 bytes
SHA-256: 8092f176d2aa6f7862fafef33f060e240175c3a4f177ab526c4ac4bf897a3bcc
font_01_sfnt_off000064bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64BD 19076 bytes
SHA-256: 3cf60c739c0884d91aaf202ef0ac6a46c83ef9e91b02a5e84cfbee5a7d00e491

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