Malicious PDF — malware analysis report

Static analysis result for SHA-256 a54c1d17955f0ac9…

MALICIOUS

PDF

35.3 KB Created: 2021-07-01 06:04:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: efd4cf54f652036b1d11cf2c21f1ca3b SHA-1: 95c2106d146bd928ac736a8440a8b35c88935eb0 SHA-256: a54c1d17955f0ac93e9be44b52ab0954cf2c77fa5ca0595cd50afeeefa6183bf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The heuristic firings confirm the presence of malicious redirector links and a lure for game hacks. While no scripts were explicitly extracted, the document's structure and embedded URLs suggest it's designed to lead users to potentially harmful content or further malicious downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.co/app/406889139/can-lucky-patcher-hack-coin-master-game-hack In PDF document text
    • http://www.harveenent.com/uploaded_files/userfiles/files/mcpe-master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.harveenent.com/uploaded_files/userfiles/files/pokemon-go-free-quest_GM1094591345.pdfIn PDF document text
    • http://www.harveenent.com/uploaded_files/userfiles/files/roblox-avatar-tester_GM431946152.pdfIn PDF document text
    • http://www.harveenent.com/uploaded_files/userfiles/files/game-hunters-coin-master_GM406889139.pdfIn PDF document text
    • http://www.harveenent.com/uploaded_files/userfiles/files/free-spins-and-coins-com_GM406889139.pdfIn PDF document text
    • http://www.harveenent.com/uploaded_files/userfiles/files/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • http://www.harveenent.com/uploaded_files/userfiles/files/change-roblox-username-free_GM431946152.pdfIn PDF document text
    • http://www.harveenent.com/uploaded_files/userfiles/files/coin-master-free-gift-links-2021_GM406889139.pdfIn PDF document text
    • http://www.harveenent.com/uploaded_files/userfiles/files/what-is-a-minecraft-client_GM479516143.pdfIn PDF document text
    • http://www.harveenent.com/uploaded_files/userfiles/files/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://www.harveenent.com/uploaded_files/userfiles/files/free-multiplayer-minecraft-server_GM479516143.pdfIn PDF document text
    • http://www.harveenent.com/uploaded_files/userfiles/files/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • http://www.harveenent.com/uploaded_files/userfiles/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.harveenent.com/uploaded_files/userfiles/files/comment-utiliser-les-cheat-roblox_GM431946152.pdfIn PDF document text
    • http://www.harveenent.com/uploaded_files/userfiles/files/free-tiktok-and-like_GM835599320.pdfIn PDF document text
    • http://www.harveenent.com/uploaded_files/userfiles/files/hack-para-coin-master-sin-verification_GM406889139.pdfIn PDF document text
    • http://www.harveenent.com/uploaded_files/userfiles/files/how-to-get-free-pets-in-roblox-pet-simulator_GM431946152.pdfIn PDF document text
    • http://www.harveenent.com/uploaded_files/userfiles/files/free-tiktok-accounts-and-passwords_GM835599320.pdfIn PDF document text
    • http://www.harveenent.com/uploaded_files/userfiles/files/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.harveenent.com/uploaded_files/userfiles/files/free-robux-card-no-human-verification-2021_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_off00003218.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3218 23248 bytes
SHA-256: 53a45bd504ff63cc8f42e1bc6d2e0aaf3e5a9dc445b354012c251512fddf4a46
font_01_sfnt_off00006673.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6673 18644 bytes
SHA-256: 4aa2ecd7f30d135146cb0da63d14d78e4416c57184309ecfebfb2756f4fd5faa

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