Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c4a691e61754d26…

MALICIOUS

PDF

33.6 KB Created: 2021-06-19 23:49:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3b0727af3e1b10efda23644b3c315439 SHA-1: efc5181de6c0bcb7e1934700836980cc41cbe5d4 SHA-256: 9c4a691e61754d26617874f0929e8f167c74725a44cbc191939c5c6d78c831f2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically designed to lure users with promises of game hacks and generators. The document body and extracted URLs indicate a phishing attempt, likely to distribute further malware or compromise user accounts. No scripts were extracted, but the PDF structure and embedded links strongly suggest a malicious intent to redirect users to harmful content.

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/natevang-hacks-robux-game-hack In PDF document text
    • http://educhina.mn/editor/files/free-roblox-scripts_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-100-robux_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/roblox-cheat-speed-simulator-2_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-coin-master-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/can-you-earn-robux_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/roblox-troll-outfits-free_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/how-to-hack-roblox-accounts-2021_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_off00002dc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DC0 21932 bytes
SHA-256: 3f177747c5fd5ca1887879cc9b22f29ef7bf8a548803b509a500d418a02c43d9
font_01_sfnt_off00005e4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E4D 18940 bytes
SHA-256: 42eadf3a512251f3230c1322b0dc19e46b3a4b40bbd6c7940adc61bae53f8154

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