Malicious PDF — malware analysis report

Static analysis result for SHA-256 b366c9728de21ec1…

MALICIOUS

PDF

34.8 KB Created: 2021-06-22 14:36:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8f73e9003f726c04fd723eb566613703 SHA-1: 810f2998c5115d2f998bae3d0f52f932769b17d9 SHA-256: b366c9728de21ec14819f4a73c53befc405a13c22a112f90ca80cedb4d3dee57
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and infrastructure, disguised as 'free generators' and 'hacks' for popular games. The document body and embedded URLs strongly suggest a lure for users seeking in-game advantages, which ultimately leads to malicious sites. The presence of multiple redirector links indicates a high likelihood of further malicious activity, such as malware delivery or phishing.

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/roblox-set-hack-com-game-hack In PDF document text
    • http://ofthalmiatrosthess.gr/images/cheat-engine-kicks-me-from-roblox_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/free-tiktok-followers-no-human-verification_GM835599320.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/how-to-get-free-roblox-hats-2021_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/google-how-do-you-get-robux_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/ro-ghoul-roblox-hack_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/free-toy-codes-roblox-2021_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/how-to-get-free-robux-100-works-2021_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/coin-master-free-redeem-code_GM406889139.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/roblox-hack-rar_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/picture-roblox_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/free-coin-master-spins-blogger_GM406889139.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/how-to-get-free-spins-grom-coin-master_GM406889139.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/roblox-xbox-360-download-free_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/free-roblox-executor_GM431946152.pdfIn PDF document text
    • http://ofthalmiatrosthess.gr/images/free-roblox-accessories_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
font_00_sfnt_off00002f59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F59 22988 bytes
SHA-256: a07db856528f02022219f7cb3205ef6cbb1a5977ff378b8c95459212e279150d
font_01_sfnt_off0000631a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x631A 19020 bytes
SHA-256: 5bbd75cdfe95c9af9a41a02e154f1cdb991331e6247d4b30c0482e507206d43d

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