Malicious PDF — malware analysis report

Static analysis result for SHA-256 70bc10073d1e695e…

MALICIOUS

PDF

48.8 KB Created: 2021-06-03 08:35:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8c75dbc758dfb90ed0a63523d8b917c8 SHA-1: 6e45284b06a92afd6d53172b8d7dfb81842070aa SHA-256: 70bc10073d1e695ebdc3181027084f92621dd3aad8916a6c95d967e5a84b1a69
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as generators for game hacks and free currency. The primary malicious URL identified is https://netcdn.online/app/431946152/free-roblox-groups-with-funds-game-hack. The document body and heuristics indicate a lure designed to trick users into clicking these links, likely leading to further malware downloads or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.online/app/431946152/free-roblox-groups-with-funds-game-hack In PDF document text
    • http://hometech.tw/ckfinder/userfiles/files/static-moonactive-net-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://hometech.tw/ckfinder/userfiles/files/minecraft-java-edition-free-download-for-android_GM479516143.pdfIn PDF document text
    • http://hometech.tw/ckfinder/userfiles/files/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • http://hometech.tw/ckfinder/userfiles/files/is-roblox-free-on-pc_GM431946152.pdfIn PDF document text
    • http://hometech.tw/ckfinder/userfiles/files/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://hometech.tw/ckfinder/userfiles/files/free-robux-download_GM431946152.pdfIn PDF document text
    • http://hometech.tw/ckfinder/userfiles/files/roblox-hackprogamers-com_GM431946152.pdfIn PDF document text
    • http://hometech.tw/ckfinder/userfiles/files/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://hometech.tw/ckfinder/userfiles/files/download-coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
    • http://hometech.tw/ckfinder/userfiles/files/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://hometech.tw/ckfinder/userfiles/files/coin-master-online-hack-generator_GM406889139.pdfIn PDF document text
    • http://hometech.tw/ckfinder/userfiles/files/static-moonactive-net-rewards_GM406889139.pdfIn PDF document text
    • http://hometech.tw/ckfinder/userfiles/files/coinmasterfreespinlink_GM406889139.pdfIn PDF document text
    • http://hometech.tw/ckfinder/userfiles/files/free-robux-co_GM431946152.pdfIn PDF document text
    • http://hometech.tw/ckfinder/userfiles/files/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • http://hometech.tw/ckfinder/userfiles/files/free-spins-and-coins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://hometech.tw/ckfinder/userfiles/files/tiktok-free-credit_GM835599320.pdfIn PDF document text
    • http://hometech.tw/ckfinder/userfiles/files/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://hometech.tw/ckfinder/userfiles/files/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://hometech.tw/ckfinder/userfiles/files/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004eae.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EAE 27780 bytes
SHA-256: 3f23fae4479d6a1d99da77413445a0fbcc5403d38b8132d8a5c9079fee9b26a3
font_01_sfnt_off00008d11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D11 3652 bytes
SHA-256: bb99792b7d06124adf12bae890c0be95dc225207670f8a70ef8a8df3dea1f915
font_02_sfnt_off000099c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99C6 19028 bytes
SHA-256: 3400496694c4b95422a50533d9ab07e9ced2fd8b85931bd61225c3b69c3e3d7c

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