Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc7819cd755290dc…

MALICIOUS

PDF

42.2 KB Created: 2021-05-14 01:03:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: da80fdd58735858fd93d0a8596666962 SHA-1: bea42031dde7b55abc0e7b98cc0ab0b154bf26de SHA-256: cc7819cd755290dc9d44aeb55cb0120258d7570f9ceddf708827dc2615e9b9e8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically promoting 'free game hacks' and 'generators' for popular games like Roblox and Coin Master. The primary lure URL is https://netcdn.xyz/app/431946152/free-roblox-toys-game-hack, which is flagged as malicious. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting these sites, likely leading to further malware downloads or phishing attempts. No scripts were extracted, but the embedded URLs and heuristic firings strongly indicate a malicious redirector chain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/431946152/free-roblox-toys-game-hack In PDF document text
    • https://audev.com/images/robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://audev.com/images/coin-master-hack-version-33-2_GM406889139.pdfIn PDF document text
    • https://www.audev.com/images/best-hack-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://audev.com/images/coin-master-hack-september-2021_GM406889139.pdfIn PDF document text
    • https://audev.com/images/rewards-roblox_GM431946152.pdfIn PDF document text
    • https://audev.com/images/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.audev.com/images/flip-master-free-coins_GM406889139.pdfIn PDF document text
    • https://audev.com/images/www-roblox-robux_GM431946152.pdfIn PDF document text
    • https://audev.com/images/coin-master-apk-hack-35-8_GM406889139.pdfIn PDF document text
    • https://www.audev.com/images/coin-master-free-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • https://audev.com/images/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • https://www.audev.com/images/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://audev.com/images/free-chest-coin-master_GM406889139.pdfIn PDF document text
    • https://audev.com/images/real-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://audev.com/images/krnl-download_GM431946152.pdfIn PDF document text
    • https://www.audev.com/images/free-realistic-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • https://www.audev.com/images/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.audev.com/images/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://audev.com/images/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://audev.com/images/coin-master-daily-bonus_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
font_00_sfnt_off00004b52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B52 24684 bytes
SHA-256: 75ca0ddf25d16282bd8f18441f071317ec2f883fd7f5cfa14c86141b7a47fd90
font_01_sfnt_off00008327.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8327 18128 bytes
SHA-256: ced59fa1f5966ac3cb16d2fbea4d1e317d998f5f31502ffb274740285f9cbd45

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