Malicious PDF — malware analysis report

Static analysis result for SHA-256 07c3dd12ccf7cd12…

MALICIOUS

PDF

42.3 KB Created: 2021-05-13 17:20:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8b7c773d6f803bc07a30dc608259f6f9 SHA-1: 4f9b2082bb397a8d30fdc0a9d6aba2b33a536e13 SHA-256: 07c3dd12ccf7cd12636694d907ba0d25955d0184e5ba1156723881da0161ab91
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that point to known malicious redirector infrastructure, specifically promoting "game hacks" and "free spins" for popular games. The presence of a visual download button lure and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content or further stages of an attack. Although no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering tactic to trick users into visiting malicious 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/coin-master-claim-spins-game-hack In PDF document text
    • http://regnataudio.com/images/hack-mod-coin-master_GM406889139.pdfIn PDF document text
    • http://regnataudio.com/images/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://regnataudio.com/images/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://regnataudio.com/images/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://regnataudio.com/images/how-to-get-minecraft-for-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • http://regnataudio.com/images/minecraft-free-download-no-virus_GM479516143.pdfIn PDF document text
    • http://regnataudio.com/images/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://regnataudio.com/images/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://regnataudio.com/images/village-3-coin-master_GM406889139.pdfIn PDF document text
    • http://regnataudio.com/images/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://regnataudio.com/images/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://regnataudio.com/images/coin-master-unlimited-spin-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://regnataudio.com/images/free-spins-coin-master-app-iphone_GM406889139.pdfIn PDF document text
    • http://regnataudio.com/images/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://regnataudio.com/images/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://regnataudio.com/images/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://regnataudio.com/images/level-coin_GM406889139.pdfIn PDF document text
    • http://regnataudio.com/images/roblox-robux-generator_GM431946152.pdfIn PDF document text
    • http://regnataudio.com/images/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • http://regnataudio.com/images/free-robux-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
stream_003_off00004b63.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B63 25104 bytes
SHA-256: 7395b756d234ab0d87f815e5678ac73ad965d05f9ed458e269abcee48d8fd442
font_01_sfnt_off000083d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83D3 18056 bytes
SHA-256: 910bba4e9b8698471f084902004854848b7ccdb185fd175879c14395f4b2f674

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