Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb385e243284189c…

MALICIOUS

PDF

46.1 KB Created: 2021-05-16 14:46:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1d8a70e7bebf61cd5f2a5e16c2f26d92 SHA-1: 8cd6d97a80234aa17589597bba81f4f8f4a7f2b7 SHA-256: cb385e243284189cd85b92daf8a9f4292eafe68f0ffbd446eb83d43f31d81e12
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or free currency generators. The primary link, https://netcdn.xyz/app/406889139/50-free-spins-coin-master-links-game-hack, is identified as a malicious redirector. The document body and embedded links suggest a social engineering lure to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/406889139/50-free-spins-coin-master-links-game-hack In PDF document text
    • https://de-licht.com/image/data/files/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/heroes-online-roblox_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/coin-master-fun-hack-online_GM406889139.pdfIn PDF document text
    • https://de-licht.com/image/data/files/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • https://de-licht.com/image/data/files/pig-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://de-licht.com/image/data/files/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://de-licht.com/image/data/files/fast-robux-online_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/master-coin-free-link_GM406889139.pdfIn PDF document text
    • https://de-licht.com/image/data/files/coin-master-free-chest-link_GM406889139.pdfIn PDF document text
    • https://de-licht.com/image/data/files/free-robux-safe_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/play-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • https://de-licht.com/image/data/files/robux-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/coin-master-free-spin-daily-bonus_GM406889139.pdfIn PDF document text
    • https://de-licht.com/image/data/files/code-free-robux_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/download-coin-master-apk-hacked_GM406889139.pdfIn PDF document text
    • https://de-licht.com/image/data/files/com-roblox_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/coin-master-daily-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b26.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B26 25768 bytes
SHA-256: cf52b693ed288259126d0a0abc1ce9bbe3de18015c4e6b23403e9fa135a2dd1b
font_01_sfnt_off00008663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8663 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off0000918c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x918C 18364 bytes
SHA-256: 5f18526dee368ac18b20cf023ba1ff49340788242d54a3837ea53eed50d07245

Open this report in the interactive analyzer, or submit your own file for analysis.