Malicious PDF — malware analysis report

Static analysis result for SHA-256 c02b9b03a9efaa15…

MALICIOUS

PDF

41.8 KB Created: 2021-05-12 15:19:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f12d882ab948f8b54297a3f75a439398 SHA-1: deaddbd02ad7b114b517e68dd9f05d2ab41dae0d SHA-256: c02b9b03a9efaa15701891d19324580ccd2c4294322f4b3eb5cc4fb0807cbb9c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising "game hacks" and "generators". The primary lure URL is https://netcdn.xyz/app/406889139/coin-master-root-hack-game-hack, which is associated with other malicious PDF documents. The document body and embedded artifacts do not contain executable scripts, but the presence of multiple malicious links strongly indicates a phishing or scam attempt.

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-root-hack-game-hack In PDF document text
    • http://kermas.eu/images/_GM479516143.pdfIn PDF document text
    • http://kermas.eu/images/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/coin-master-game-free-download_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/free-minecraft-java-edition_GM479516143.pdfIn PDF document text
    • http://kermas.eu/images/how-to-send-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/coin-master-game-hacks_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/best-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://kermas.eu/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/coin-master-hack-reddit_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • http://kermas.eu/images/master-free-spin_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/robux-cheat_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/robux-free-online_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_off000049b7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49B7 25248 bytes
SHA-256: 437d54fed1bafebe5966bd255418e29d6e9ab7bac7192f4f443a8d732e9401e1
font_01_sfnt_off000082ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82AC 17716 bytes
SHA-256: 3314f7b38d470594eaa73d4973565fc6f74845bbaa83b1a4a8a9c9b025514e4b

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