Malicious PDF — malware analysis report

Static analysis result for SHA-256 43764e37b82e70ea…

MALICIOUS

PDF

42.4 KB Created: 2021-05-19 04:13:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d3e5e6a3c408ef637358e1c53712fba6 SHA-1: 3fb2773c11ca5423a8c6dd1d757c8446f89b9e24 SHA-256: 43764e37b82e70ea24ff0511a7d0ba8526a1c69685d41eadf95f49006dc9e845
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that lead to known malicious redirector infrastructure, specifically targeting users interested in game hacks and free in-game currency. The heuristic firings confirm the presence of malicious redirector links and a lure for game hacks. The document body, though partially corrupted, contains a prominent URL matching the malicious redirector.

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-on-coin-master-without-human-verification-game-hack In PDF document text
    • https://hotelyetihome.com/userfiles/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/how-to-get-free-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/minecraft-pe-server-hosting-free_GM479516143.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/minecraft-toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/free-minecraft-wallpaper_GM479516143.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/is-minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/free-400-spins-coins-master_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/coin-master-35-13-hack-download_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/coin-master-free-spins-link-no-verification_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/public-enemy-sun-prairie-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/coin-master-free-gift-link-2021_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/minecraft-pe-017-0-apk-free-download-android_GM479516143.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/robloxfun-com-generator_GM431946152.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_off000048fc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48FC 24656 bytes
SHA-256: e19f4352fed7501b96d0377265a5451a089590ed6cf32b2a4489321817ff6b1e
font_01_sfnt_off00008216.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8216 18784 bytes
SHA-256: 960842b6fe33ab0647d2f84e57a2bd0982928fead2374cfcf5cb9148229d7a4f

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