Malicious PDF — malware analysis report

Static analysis result for SHA-256 014e0f5699df5b6c…

MALICIOUS

PDF

45.4 KB Created: 2021-05-16 09:18:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4b4e79dbe627a73ce326aab3cbadd3ff SHA-1: cb2173f86e020087db4ba3aef7b932ccfe8506a2 SHA-256: 014e0f5699df5b6c715a72713ea8f3176323b0d30e1941d17c2e2c996faa3e34
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. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest a phishing or redirection attempt. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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 https://netcdn.xyz/app/431946152/free-robux-no-downloading-apps-game-hack PDF link annotation
    • http://mittlenberg.ch/images/how-to-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://mittlenberg.ch/images/coin-master-hack-ios-no-verification_GM406889139.pdfIn PDF document text
    • http://mittlenberg.ch/images/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://mittlenberg.ch/images/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • http://mittlenberg.ch/images/roblox-hackprogamers-com_GM431946152.pdfIn PDF document text
    • http://mittlenberg.ch/images/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://mittlenberg.ch/images/roblox-cheat-robux_GM431946152.pdfIn PDF document text
    • http://mittlenberg.ch/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://mittlenberg.ch/images/coin-master-for-pc-free-download_GM406889139.pdfIn PDF document text
    • http://mittlenberg.ch/images/free-coins-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://mittlenberg.ch/images/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://mittlenberg.ch/images/how-to-get-free-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://mittlenberg.ch/images/roblox-source_GM431946152.pdfIn PDF document text
    • http://mittlenberg.ch/images/coin-master-game-free_GM406889139.pdfIn PDF document text
    • http://mittlenberg.ch/images/blox-rewards_GM431946152.pdfIn PDF document text
    • http://mittlenberg.ch/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://mittlenberg.ch/images/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • http://mittlenberg.ch/images/free-robux-only-username_GM431946152.pdfIn PDF document text
    • http://mittlenberg.ch/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://mittlenberg.ch/images/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4887 25436 bytes
SHA-256: b979991ca2ae63c75bd3e85d232117585f6fbab14393670ba81de7cb4d7e4f4d
font_01_sfnt_off000081cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81CD 2820 bytes
SHA-256: 972979c3a46100cf5f8fd289bc6fbd2496ff75fec0e3f6753648c72ec6eba714
font_02_sfnt_off00008b6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B6D 19404 bytes
SHA-256: 49b6dfa9b56ae39db803e39cb2f1ecc2093e69bc279e239e32c5359198169209

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