Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c9ce962c40f0b56…

MALICIOUS

PDF

42.0 KB Created: 2021-05-17 16:34:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c512e58e85508a4edb60f34abe3b278b SHA-1: 9088e42b06fc4626eb0077ba666f82c205e7caa4 SHA-256: 7c9ce962c40f0b5684c2e75b3758fdb3fc52e649582b510ca672f75c0a61f614
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link disguised as a game hack generator, which redirects to known malicious infrastructure. The document body and embedded URLs suggest a lure for users seeking free in-game items or cheats. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirector designed to lead users to potentially harmful content or further exploits.

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/479516143/is-minecraft-vr-free-game-hack In PDF document text
    • https://www.donjastubica.hr/files/coinmaster-free-spins-link_GM406889139.pdfIn PDF document text
    • http://www.donjastubica.hr/files/coin-master-free-spins-link-2021-download_GM406889139.pdfIn PDF document text
    • https://www.donjastubica.hr/files/how-to-make-a-server-in-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://www.donjastubica.hr/files/roblox-games-with-free-radio_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/roblox-but_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/master-free-spin_GM406889139.pdfIn PDF document text
    • http://www.donjastubica.hr/files/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.donjastubica.hr/files/how-to-change-your-username-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.donjastubica.hr/files/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://www.donjastubica.hr/files/microsoft-bing-robux_GM431946152.pdfIn PDF document text
    • http://www.donjastubica.hr/files/real-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.donjastubica.hr/files/how-can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.donjastubica.hr/files/roblox-com-free-play_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/coin-master-33-hack-version-download_GM406889139.pdfIn PDF document text
    • https://www.donjastubica.hr/files/minecraft-java-edition-free-trial_GM479516143.pdfIn PDF document text
    • https://www.donjastubica.hr/files/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • https://www.donjastubica.hr/files/how-to-get-free-robux-codes-2021_GM431946152.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_003_off00004bf5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BF5 24672 bytes
SHA-256: dd6db184466f21c0ff12784bde462bd7c59d9f4a233b79bc39099239914374e8
font_01_sfnt_off000083a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83A0 17704 bytes
SHA-256: 8bb0636472a21c77c03eb179316ec7672ebaf2fffc2d381e43d3ff9b7c84c5d1

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