Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ff2a5ea50f441df…

MALICIOUS

PDF

41.9 KB Created: 2021-05-15 03:30:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d772124215b8d69a9b63e903b0f7792c SHA-1: 224a028b6e3a29814b3b59d716fe0d70506fe767 SHA-256: 7ff2a5ea50f441df9019d6676d55f792cc770180a968e5551404bfc6f3c7d8f5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free coins to trick users into clicking malicious links. The primary link, 'https://netcdn.xyz/app/406889139/free-coins-coin-master-2021-game-hack', is identified as a known malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a potential for further malicious actions, such as downloading additional payloads or redirecting to phishing 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-coins-coin-master-2021-game-hack In PDF document text
    • https://elearningman1kotacirebon.sch.id/__statics/gudangsoal/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • https://elearningman1kotacirebon.sch.id/__statics/gudangsoal/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://elearningman1kotacirebon.sch.id/__statics/gudangsoal/files/free-coins-coin-master-today_GM406889139.pdfIn PDF document text
    • https://elearningman1kotacirebon.sch.id/__statics/gudangsoal/files/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • https://elearningman1kotacirebon.sch.id/__statics/gudangsoal/files/coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • https://elearningman1kotacirebon.sch.id/__statics/gudangsoal/files/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • https://elearningman1kotacirebon.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • https://elearningman1kotacirebon.sch.id/__statics/gudangsoal/files/100-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearningman1kotacirebon.sch.id/__statics/gudangsoal/files/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • https://elearningman1kotacirebon.sch.id/__statics/gudangsoal/files/how-to-change-your-name-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://elearningman1kotacirebon.sch.id/__statics/gudangsoal/files/coin-master-hack-355_GM406889139.pdfIn PDF document text
    • https://elearningman1kotacirebon.sch.id/__statics/gudangsoal/files/roblox-games-com-free_GM431946152.pdfIn PDF document text
    • https://elearningman1kotacirebon.sch.id/__statics/gudangsoal/files/pop-slots-free-vegas-casino-slot-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • https://elearningman1kotacirebon.sch.id/__statics/gudangsoal/files/free-roblox-followers-generator_GM431946152.pdfIn PDF document text
    • https://elearningman1kotacirebon.sch.id/__statics/gudangsoal/files/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearningman1kotacirebon.sch.id/__statics/gudangsoal/files/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • https://elearningman1kotacirebon.sch.id/__statics/gudangsoal/files/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • https://elearningman1kotacirebon.sch.id/__statics/gudangsoal/files/coin-master-daily-free-rewards_GM406889139.pdfIn PDF document text
    • https://elearningman1kotacirebon.sch.id/__statics/gudangsoal/files/do-coin-master-hacks-work_GM406889139.pdfIn PDF document text
    • https://elearningman1kotacirebon.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-download-hack_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
stream_003_off00004a79.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A79 24332 bytes
SHA-256: 5e39930556dc770ef9e8b567a91530d594012d7aaa5144992b22809e677b8f4c
font_01_sfnt_off000081c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81C1 18112 bytes
SHA-256: 0727bd4027d3f5eec951b181c2bc31ee4d98e10eed2c862aff41d240a04f60ea

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