Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ee80d6f3b5d51e0…

MALICIOUS

PDF

34.8 KB Created: 2021-06-18 09:30:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 9ba7116170da08b02d7d6cbd6b43f056 SHA-1: 7ee07e67cd568edf56ff6813e50d576859108796 SHA-256: 5ee80d6f3b5d51e01c53ce44c6215cd060df29a402ef1e0c433fbfbde67cc183
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites that promise free in-game currency or hacks, such as 'how-to-hack-roblox-account-on-phone-game-hack'. This pattern, combined with the 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_GAME_HACK_REDIRECT_LURE' heuristics, strongly suggests a phishing or scam attempt designed to redirect users to potentially malicious content. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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 http://netcdn.co/app/431946152/how-to-hack-roblox-account-on-phone-game-hack In PDF document text
    • http://www.3d-gold.com.hk/upload/files/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/roblox-redeem_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/play-games-for-robux_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/free-tiktok-followers-without-survey_GM835599320.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/how-to-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/free-alt-accounts-roblox_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/free-accessories-roblox_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/coin-master-pro-hack_GM406889139.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/free-girl-hair-roblox_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/roblox-avatar-editor-free_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/optifine-pe_GM479516143.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/how-to-get-robux-for-free-grantz_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/universal-minecraft-converter-free_GM479516143.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/how-to-sue-roblox_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
stream_002_off00002f7f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F7F 22748 bytes
SHA-256: ff54bdffd425b557d12a82405e4573dd354f9a58ddf7d961b9d3086f1b6c2415
font_01_sfnt_off0000629d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x629D 19200 bytes
SHA-256: 0a314a3c935ca4e3e63afc526aded373e8bb3609550f276a980dfab975eb4576

Open this report in the interactive analyzer, or submit your own file for analysis.