Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e89b003bb4326a5…

MALICIOUS

PDF

44.4 KB Created: 2021-05-16 07:36:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 39007ea07fb5018f80ae27a54781e922 SHA-1: dfd614b897e35e32f7c1a135b2a4cef971b66262 SHA-256: 3e89b003bb4326a5612e6fca9a9def51d314a4016e8abbe6166f4b744c486be4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector infrastructure, specifically advertising free game currency and hacks for popular games like Coin Master and Robux. The primary redirector URL is https://netcdn.xyz/app/406889139/coin-master-20-free-spins-link-today-game-hack, which is flagged as malicious. The document body and embedded URLs suggest a social engineering lure to trick users into visiting these sites, likely leading to further malware downloads or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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-20-free-spins-link-today-game-hack In PDF document text
    • http://global-tech-security.be/images/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://global-tech-security.be/images/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://global-tech-security.be/images/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://global-tech-security.be/images/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://global-tech-security.be/images/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
    • http://global-tech-security.be/images/real-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://global-tech-security.be/images/coin-master-village-3_GM406889139.pdfIn PDF document text
    • http://global-tech-security.be/images/coin-master-free-spins-2021-app_GM406889139.pdfIn PDF document text
    • http://global-tech-security.be/images/synapse-roblox-free_GM431946152.pdfIn PDF document text
    • http://global-tech-security.be/images/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • http://global-tech-security.be/images/robux-for-surveys_GM431946152.pdfIn PDF document text
    • http://global-tech-security.be/images/juego-hackeado-de-coin-master_GM406889139.pdfIn PDF document text
    • http://global-tech-security.be/images/coin-master-sound-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://global-tech-security.be/images/coin-master-hack-iosgods_GM406889139.pdfIn PDF document text
    • http://global-tech-security.be/images/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • http://global-tech-security.be/images/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://global-tech-security.be/images/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://global-tech-security.be/images/coin-master-tool-hack_GM406889139.pdfIn PDF document text
    • http://global-tech-security.be/images/coin-master-free_GM406889139.pdfIn PDF document text
    • http://global-tech-security.be/images/roblox-g_GM431946152.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_off0000484b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x484B 24232 bytes
SHA-256: 4cf9f62025d834b8614ec356e0f8ce48a081d95de13f008764587014593cb575
font_01_sfnt_off00007fb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FB6 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off000089a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89A1 18708 bytes
SHA-256: 12e287a5003346b2d0ade94f1738d16a0662f4443659e1f710297a0eebb69c5d

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