Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bbe2ee1d8391b67…

MALICIOUS

PDF

42.1 KB Created: 2021-05-12 05:45:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cec9514a81236fab9c1864ed315efe96 SHA-1: a8355af6ced3a3dc3ae03a90f433806c5db207ea SHA-256: 4bbe2ee1d8391b67256074254b994db276e3cc48882a37549fa3edfd6375c48e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a known malicious infrastructure, specifically promoting a 'hack coin master' lure. The presence of a visual download button and the ML classifier's high confidence score indicate a malicious intent to trick users into visiting potentially harmful sites. No scripts were extracted, but the primary attack vector appears to be social engineering via deceptive links.

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/hack-coin-master-apk-mod-game-hack In PDF document text
    • https://www.dressel-immobilien-mv.de/images/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dressel-immobilien-mv.de/images/moonactive-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dressel-immobilien-mv.de/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.dressel-immobilien-mv.de/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.dressel-immobilien-mv.de/images/roblox-robux-generator-http-freerobuxgenerator-xyz_GM431946152.pdfIn PDF document text
    • https://www.dressel-immobilien-mv.de/images/how-to-o-get-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://www.dressel-immobilien-mv.de/images/real-coin-master-hacks_GM406889139.pdfIn PDF document text
    • https://www.dressel-immobilien-mv.de/images/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • https://www.dressel-immobilien-mv.de/images/roblox-install-free_GM431946152.pdfIn PDF document text
    • https://www.dressel-immobilien-mv.de/images/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • https://www.dressel-immobilien-mv.de/images/coin-master-unlimited-spin-apk-free-download_GM406889139.pdfIn PDF document text
    • https://www.dressel-immobilien-mv.de/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.dressel-immobilien-mv.de/images/free-coins-for-coin-master-blogger_GM406889139.pdfIn PDF document text
    • https://www.dressel-immobilien-mv.de/images/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • https://www.dressel-immobilien-mv.de/images/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.dressel-immobilien-mv.de/images/free-coins-for-flip-master-online_GM406889139.pdfIn PDF document text
    • https://www.dressel-immobilien-mv.de/images/how-to-win-attack-madness-in-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.dressel-immobilien-mv.de/images/free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.dressel-immobilien-mv.de/images/free-robux-com-real_GM431946152.pdfIn PDF document text
    • https://www.dressel-immobilien-mv.de/images/download-minecraft-java-edition-free_GM479516143.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_off00004ab5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AB5 24476 bytes
SHA-256: 3458e6012964aa09e4b5cc67d57d2e2942f055cec4a985a7631f591d5c1e50d8
font_01_sfnt_off000082a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82A9 18068 bytes
SHA-256: 9a1fe8593802629ca91e824aef9790fcb981ac5ee6ac3e1bb8e6d1b292261c5d

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