Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c419a7a80bb5d93…

MALICIOUS

PDF

31.5 KB Created: 2021-07-22 16:53:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 881a21c9d336beb33d0239b0b5601dae SHA-1: c8b6416f504915128e68ad1c8a03b885ebe5e4af SHA-256: 4c419a7a80bb5d93ae343a7eef22a8915c89713a7bc7cba3bbcc1615c02323ee
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors and lures for game-related cheats, such as 'Free Minecraft Codes'. The document body explicitly contains the URL 'http://netcdn.tw/app/479516143/free-minecraft-codes-game-hack', which is identified as a malicious redirector. This suggests the document is part of a phishing campaign designed to lead users to potentially harmful content or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9893

Heuristics 4

  • 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.
  • 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.tw/app/479516143/free-minecraft-codes-game-hack In PDF document text
    • http://falconshipping-uae.com/userfiles/files/www-free-robux_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/minecraft-free-online_GM479516143.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/tiktok-follower-bot-free_GM835599320.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/hack-tiktok-fans-free_GM835599320.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/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_off00002b76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B76 21540 bytes
SHA-256: ef633eaab92b6256a61939d7a189267b479e1c2f9f2b1cc36294bfa37b427e46
font_01_sfnt_off00005a68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A68 17884 bytes
SHA-256: ca0982e5699fcbbad1c272e9f6df792bd17b0fef580afa6f1747d77cedc77eee

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