Malicious PDF — malware analysis report

Static analysis result for SHA-256 330571e4a690b356…

MALICIOUS

PDF

45.4 KB Created: 2021-06-07 16:11:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9fcb949138c4fb20a5e5d7518b76bac6 SHA-1: da1f9634caad6a59d9bc8e7fea86b18ab86d5ef3 SHA-256: 330571e4a690b3561ea57a050376b9a6b30cc2df253a7c3c1e3352a3d0f22685
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector infrastructure, specifically promoting game hacks and generators, which is a common lure for phishing or malware distribution. The ML classifier also flagged this PDF as malicious. The embedded URL https://netcdn.tw/app/431946152/cheat-roblox-vehicle-simulator-money-game-hack is a primary indicator of malicious intent, likely leading to a further stage of infection or a scam.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.tw/app/431946152/cheat-roblox-vehicle-simulator-money-game-hack In PDF document text
    • https://www.manmed.info:443/images/is-minecraft-free-on-mac_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/minecraft-launcher-free_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-hack-2021-without-verification_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-roblox-accounts-with-builders-club_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/minecraft-bedrock-client_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-spins-coin-master-android_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/how-to-earn-robux_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/cheats-for-coin-master_GM406889139.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_004_off0000511f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x511F 26824 bytes
SHA-256: cdf8d0eca6d12678292cfd0c9707db4d214cfb73c56ec6c61916c1ac9174f017
font_01_sfnt_off00008c05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C05 19312 bytes
SHA-256: d2f5b01b49e0fc8acee5065b0df76e7bcc26cb7deefeeb8368b25548c85c5282

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