Malicious PDF — malware analysis report

Static analysis result for SHA-256 b80d9248fe4874d4…

MALICIOUS

PDF

46.3 KB Created: 2021-05-15 16:55:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9213971caa7af3b39b3adf796b188e2a SHA-1: 3dd3acf028bc3f407bb99cf49f6c99f96d415c2b SHA-256: b80d9248fe4874d4922a3d4916d1671b313a6b42d73cf4459c8148aae257be57
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The document body and extracted URLs indicate a social engineering attempt to trick users into visiting these sites, likely for further malware delivery or phishing. No scripts were extracted, but the presence of malicious redirectors and the lure content strongly suggest a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9278

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/431946152/codes-to-get-free-robux-game-hack In PDF document text
    • https://www.hotschool.com.au/images/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • https://www.hotschool.com.au/images/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.hotschool.com.au/images/easy-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.hotschool.com.au/images/coin-master-hacker-club_GM406889139.pdfIn PDF document text
    • https://www.hotschool.com.au/images/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.hotschool.com.au/images/cheating-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.hotschool.com.au/images/how-to-get-minecraft-for-free-on-mobile_GM479516143.pdfIn PDF document text
    • https://www.hotschool.com.au/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://www.hotschool.com.au/images/hack-download_GM431946152.pdfIn PDF document text
    • https://www.hotschool.com.au/images/fb-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://www.hotschool.com.au/images/hack-coin-master-ios-download_GM406889139.pdfIn PDF document text
    • https://www.hotschool.com.au/images/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdfIn PDF document text
    • https://www.hotschool.com.au/images/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://www.hotschool.com.au/images/coin-master-hack-apk-facebook-login_GM406889139.pdfIn PDF document text
    • https://www.hotschool.com.au/images/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://www.hotschool.com.au/images/hack-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://www.hotschool.com.au/images/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.hotschool.com.au/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://www.hotschool.com.au/images/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://www.hotschool.com.au/images/free-robux-no-human-verification-or-survey-2021_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_off00004c60.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C60 26348 bytes
SHA-256: ff9e869551fe50bd10933a800ea6bc8b05c484803d1be1acfc5025a8b60dc8c4
font_01_sfnt_off000087f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87F9 2984 bytes
SHA-256: 15fa605262285dfa73b694d259bab9c45b3003b991993000b226b6edb761bd99
font_02_sfnt_off0000924c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x924C 18292 bytes
SHA-256: c4e16f213ba515826b0fc8bd2adb9a42249615e2a7fe5232f5ebe2d4ec6172c1

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