Malicious PDF — malware analysis report

Static analysis result for SHA-256 0584ecdac899b1d7…

MALICIOUS

PDF

34.0 KB Created: 2021-06-28 02:19:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3d96205b95ffa63933a315f2b4911a75 SHA-1: a02b1af440acb4a43e506c97cd0cb22785ec7817 SHA-256: 0584ecdac899b1d709879e70ae6ba8208c69b7d7344b34c5b83b86ae5b0c450d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a redirector URL that promises game hacks and free virtual currency, indicative of a phishing or scam lure. The ML classifier strongly flagged this PDF as malicious. While no scripts were extracted, the embedded URLs and the document body's content strongly suggest a social engineering attack aimed at tricking users into visiting malicious sites.

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/431946152/free-robux-hack-download-no-survey-game-hack In PDF document text
    • https://3qblocks.com.tw/image/data/files/roblox-assassin-coin-hack-2021_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-spin-codes-coin-master_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-hack-generator-tool_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-minecraft-hosting_GM479516143.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-attack-madness-hack_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-minecraft-account-and-password-generator_GM479516143.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-spin-online-tool-coin-master_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/tiktok-fans-free_GM835599320.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-roblox-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/wurst-112_GM479516143.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/wurst-commands_GM479516143.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/redline-roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/https-oprewards-com-roblox_GM431946152.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E32 22004 bytes
SHA-256: 9bd9e958708962de5d24bf0da8258a242232f88d823ad994b3c4fc7b3b6e436f
font_01_sfnt_off00005db5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB5 19760 bytes
SHA-256: 86388d291b6d0b35e0969e83cd2923424e91bf4d512d140d1cc0cccf0476c397

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