Malicious PDF — malware analysis report

Static analysis result for SHA-256 94ce452b38861a45…

MALICIOUS

PDF

41.6 KB Created: 2021-05-14 12:08:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4f3a3a13d4ccfd3428239a3485848a81 SHA-1: ab9ee43910472d27c69ca18e2d06d63c8c044aaa SHA-256: 94ce452b38861a457dd88d8528b00d5db6cc245ff65cde1abdb8e0740f7e1ccd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free spins' to lure users. The ML classifier strongly indicated maliciousness, and the presence of numerous embedded URLs pointing to known redirectors confirms a phishing or scam attempt. No scripts were extracted, but the document's structure and embedded links are designed to trick users into navigating to potentially harmful sites.

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/406889139/free-400-spins-coins-master-game-hack In PDF document text
    • http://www.dimalcco.com/images/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://www.dimalcco.com/images/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://www.dimalcco.com/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.dimalcco.com/images/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://www.dimalcco.com/images/coinmaster-spin-ml-link_GM406889139.pdfIn PDF document text
    • http://www.dimalcco.com/images/coin-master-spin-link-2021_GM406889139.pdfIn PDF document text
    • http://www.dimalcco.com/images/coin-master-shield-hack_GM406889139.pdfIn PDF document text
    • http://www.dimalcco.com/images/coin-master-hack-apk-35-18_GM406889139.pdfIn PDF document text
    • http://www.dimalcco.com/images/como-hackear-coin-master-2021-espaol_GM406889139.pdfIn PDF document text
    • http://www.dimalcco.com/images/free-800-robux_GM431946152.pdfIn PDF document text
    • http://www.dimalcco.com/images/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.dimalcco.com/images/coin-master-free-spins-app-for-iphone_GM406889139.pdfIn PDF document text
    • http://www.dimalcco.com/images/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://www.dimalcco.com/images/free-spin-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://www.dimalcco.com/images/get-more-robux_GM431946152.pdfIn PDF document text
    • http://www.dimalcco.com/images/coin-master-online-hack-link_GM406889139.pdfIn PDF document text
    • http://www.dimalcco.com/images/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://www.dimalcco.com/images/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • http://www.dimalcco.com/images/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.dimalcco.com/images/can-you-actually-get-free-robux_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_off00004756.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4756 24820 bytes
SHA-256: 858e66aa2145386ae56fabdac32476865255b2bb6759da88df764587d1493d3b
font_01_sfnt_off0000807c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x807C 18120 bytes
SHA-256: 83d73b5d15900ebf4c8e8e4c37772eeea58eeced4667d8a4ec0d9f93b93c7b15

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