Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a5841590241f7ad…

MALICIOUS

PDF

42.8 KB Created: 2021-05-16 10:30:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7257f7e3ee19b24bdc2f7cecb2305bc4 SHA-1: 2285e0e75eb91df8f217eb50e0e57a4f1430fac3 SHA-256: 0a5841590241f7ad0f11eb6de210d5aeb1b07840f0f20441e574a9994b1376e1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains embedded links that lead to known malicious redirectors, specifically promoting a "Coin Master Hack Tool". The document body and heuristics indicate a lure designed to trick users into downloading potentially unwanted or malicious software. The primary attack vector appears to be social engineering via a fake generator/hack tool.

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-hack-tool-v1-9-download-free-game-hack In PDF document text
    • http://feuerwehr-rheinau.de/images/legit-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/coin-master-heaven-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/free-robux-download_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/se-puede-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/coin-master-hack-cydia_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/get-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/free-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/coin-master-hack-mod-apk-download_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/coin-master-hack-no-verification-no-signup_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000481f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x481F 25876 bytes
SHA-256: c724f5ebfbbba3435ddce9cccd08a82eb9741ae92683de2be0126a1ebc1a3f94
font_01_sfnt_off0000833e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x833E 18864 bytes
SHA-256: f6546c931e30ebe5b0f44735796ae8f725f630439fc19eae70f9e7cc234a2321

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