Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea2305aada527ec7…

MALICIOUS

PDF

33.3 KB Created: 2021-06-19 03:30:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e83340f0b90926f85ca1ae1ceb7358a5 SHA-1: 7e6cea03f45849ba2465a8d93f8c3c269b273bed SHA-256: ea2305aada527ec77a2da0ba5f4a19d2b807d668ed9a1d4b17a36ac3297f15e2
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains a malformed exploit stream and links to known malicious redirector infrastructure. The document body and embedded URLs suggest a lure for free game currency or hacks, specifically targeting users interested in Robux or Coin Master. The primary malicious URL identified is http://netcdn.co/app/431946152/free-robux-limited-offer-game-answers-game-hack, which likely serves as a gateway to further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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 http://netcdn.co/app/431946152/free-robux-limited-offer-game-answers-game-hack In PDF document text
    • http://montchanintt.fr/images/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/robux-generator-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/free-roblox-codes-2021_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/hack-mod-coin-master_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/how-to-hack-robux-using-inspect_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/how-to-get-free-robux-with-crome_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/what-are-points-for-in-roblox_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/minecraft-free-download-ipad_GM479516143.pdfIn PDF document text
    • http://montchanintt.fr/images/free-robux-please_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/roblox-games-com-free_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/master-coin-hack-game_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • http://montchanintt.fr/images/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/coin-master-free-spin-and-coins-links_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
font_00_sfnt_off00002df0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DF0 21236 bytes
SHA-256: 4e3b1c744a07312adb0cdfac9e2ebb7e034a867381f1b6a32fe03ff1b6f4c410
font_01_sfnt_off00005c17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C17 19352 bytes
SHA-256: 4b58e1a88705bce024cfd067ead4e3791547eaeba88275162e04131f4f7904a7

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