Malicious PDF — malware analysis report

Static analysis result for SHA-256 04eae2e919a1c050…

MALICIOUS

PDF

44.1 KB Created: 2021-05-16 04:34:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1bd6f93fa0128647baada834a89f9fac SHA-1: edcae40398ba6a4df01ff08875bddfccaf4a15f4 SHA-256: 04eae2e919a1c050c0e97e864a5d19da5d727e1d56f227b30087a10982f45158
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures related to popular games like Coin Master and Roblox, aiming to trick users into clicking. The presence of a download button lure and the ML classifier's high confidence score further support its malicious nature. The document's content and embedded URLs suggest a phishing or scam campaign designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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-spin-pattern-game-hack In PDF document text
    • http://atmos-service.com/images/roblox-studio-free_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/coin-master-link-app_GM406889139.pdfIn PDF document text
    • http://atmos-service.com/images/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/flip-master-free-coins_GM406889139.pdfIn PDF document text
    • http://atmos-service.com/images/roblox-com-games-referrer-roblox-player_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/how-to-get-robux_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/free-spin-and-daily-news-coin-master_GM406889139.pdfIn PDF document text
    • http://atmos-service.com/images/oprewards-points-generator_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://atmos-service.com/images/minecraft-xbox-360-free_GM479516143.pdfIn PDF document text
    • http://atmos-service.com/images/free-minecraft-gift-codes_GM479516143.pdfIn PDF document text
    • http://atmos-service.com/images/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://atmos-service.com/images/how-do-i-earn-robux_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://atmos-service.com/images/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/abd-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000495a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x495A 24460 bytes
SHA-256: 2c0a7e82ff1663886fb0392e4f641974e0c32267fc5075e92480958b19f821eb
font_01_sfnt_off0000815b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x815B 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008b0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B0D 17876 bytes
SHA-256: bd22fd35e13567494ff4a803842d6b5fa952e975cd9e2293b3775db85ba13e50

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