Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e441928e91bd3a7…

MALICIOUS

PDF

42.8 KB Created: 2021-05-15 05:09:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d99293ec8fa315efabbc3cc39b0524ef SHA-1: 7200ec47b9947c8d7e0544ac617c32a5c6085946 SHA-256: 4e441928e91bd3a7695b22c78a86df180e76c4a4f800a00c05f976c46e2848ad
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically advertising 'free spins' and 'game hacks'. The ML classifier also flagged this PDF as malicious. The presence of these lures and the redirection to known malicious domains indicates an attempt to trick users into visiting potentially harmful sites, likely for further exploitation or credential harvesting.

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/free-spins-coin-master-2021-game-hack In PDF document text
    • https://www.essentracomponents.com.my/images/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://www.essentracomponents.com.my/images/roblox-com-r_GM431946152.pdfIn PDF document text
    • https://www.essentracomponents.com.my/images/free-exploits-for-roblox_GM431946152.pdfIn PDF document text
    • https://www.essentracomponents.com.my/images/village-4-coin-master_GM406889139.pdfIn PDF document text
    • https://www.essentracomponents.com.my/images/free-robux-earn_GM431946152.pdfIn PDF document text
    • https://www.essentracomponents.com.my/images/minecraft-tools_GM479516143.pdfIn PDF document text
    • https://www.essentracomponents.com.my/images/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • https://www.essentracomponents.com.my/images/legit-coin-master-hack-october-2021_GM406889139.pdfIn PDF document text
    • https://www.essentracomponents.com.my/images/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://www.essentracomponents.com.my/images/minecraft-pocket-edition-free-apk_GM479516143.pdfIn PDF document text
    • https://www.essentracomponents.com.my/images/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://www.essentracomponents.com.my/images/minecraft-free-app_GM479516143.pdfIn PDF document text
    • https://www.essentracomponents.com.my/images/coin-master-free-coin-and-spin-app_GM406889139.pdfIn PDF document text
    • https://www.essentracomponents.com.my/images/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • https://www.essentracomponents.com.my/images/coin-master-link-spin_GM406889139.pdfIn PDF document text
    • https://www.essentracomponents.com.my/images/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://www.essentracomponents.com.my/images/coin-master-free-spins-apple_GM406889139.pdfIn PDF document text
    • https://www.essentracomponents.com.my/images/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://www.essentracomponents.com.my/images/apk-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.essentracomponents.com.my/images/coin-master-daily-free-spins-hack_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
stream_003_off00004cec.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CEC 24676 bytes
SHA-256: b4a48db2b50643ab8d59f2c58e7be8977c9ccc032bdb387a9d660550770c7726
font_01_sfnt_off00008518.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8518 18288 bytes
SHA-256: 9732707b45c862b7a6ef8ea2418900def9be3650c6b325207d932644f64622ad

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