Malicious PDF — malware analysis report

Static analysis result for SHA-256 e84a46db53a7eb5c…

MALICIOUS

PDF

35.3 KB Created: 2021-06-26 23:55:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f3e6b30e0a46ff31518ce13ff52a5f9e SHA-1: f630f66cad83faa7a79d5911e087bfb19b1673b8 SHA-256: e84a46db53a7eb5cc2060aeee5181b1e71128b9ac16f1c682058e48707903e62
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to a URL that is also flagged as malicious infrastructure. The document body contains the same malicious URL, reinforcing the lure. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/unpatched-cheat-engine-roblox-pokemon-game-hack In PDF document text
    • http://www.sbairs.com/datas/files/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/cheat-codes-desert-treasure-quest-for-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coin-master-hack-apk-ios_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coin-master-cards-for-free_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/rbxp-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/archery-master-3d-hack-unlimited-coins-cheats_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/minecraft-windows-free_GM479516143.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-robux-sites-no-verification_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coin-master-pro-hack_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/roblox-how-to-play-welcome-to-bloxburg-for-free_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/how-to-create-group-in-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/robux-no-survey_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/roblox-nerf-fps-hacks_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/robux-cheat_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coin-master-free-box_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
font_00_sfnt_off00003041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3041 22592 bytes
SHA-256: 9a47bf661de1aac9b6812ccab21ae515cffe545b7bc656ab0d24eb574450f3b3
font_01_sfnt_off000062e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E6 19808 bytes
SHA-256: 22f9229a15fd482cdb8d4b614c36814aa20d81b58c9cd514956860e11009ff73

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