Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce22ef669626860c…

MALICIOUS

PDF

45.1 KB Created: 2021-05-16 20:00:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: aa6459cc296bf9f407262dfd95380a02 SHA-1: e07f79bead6f463ea098f02d52693bff67968bda SHA-256: ce22ef669626860c1da41f54c86647c74cf6832aa7b68584e090ec1c87fe4102
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 'free generator / game hack' lures. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful sites. No scripts were extracted, but the document's structure and embedded links strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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/431946152/free-robux-with-no-survey-game-hack In PDF document text
    • http://cosver.eu/images/coin-master-free-account_GM406889139.pdfIn PDF document text
    • http://cosver.eu/images/coin-master-free-spins-23-march-2021_GM406889139.pdfIn PDF document text
    • http://cosver.eu/images/how-to-hack-coins-in-archery-master-3d_GM406889139.pdfIn PDF document text
    • http://cosver.eu/images/free-roblox-clothes-boy_GM431946152.pdfIn PDF document text
    • http://cosver.eu/images/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://cosver.eu/images/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://cosver.eu/images/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://cosver.eu/images/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://cosver.eu/images/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://cosver.eu/images/how-to-make-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://cosver.eu/images/free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://cosver.eu/images/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://cosver.eu/images/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://cosver.eu/images/wurst-hacks_GM479516143.pdfIn PDF document text
    • http://cosver.eu/images/how-to-change-your-username-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://cosver.eu/images/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://cosver.eu/images/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://cosver.eu/images/free-coin-master-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://cosver.eu/images/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • http://cosver.eu/images/free-coins-coin-master-link_GM406889139.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004742.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4742 25520 bytes
SHA-256: 0fd99bf357c52b8a37865cf149e19fbc29005d500a5d373dbad1cfd21a23e250
font_01_sfnt_off00008213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8213 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off00008bc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BC4 18896 bytes
SHA-256: c9a06fd84da7c680e9235c6c693ba85d62e2f793adf65e6d39442d95d7fb6fc9

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