Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee7a5cbeded9b40c…

MALICIOUS

PDF

33.2 KB Created: 2021-07-06 13:12:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ec4a4195f31fdd5f57a2aabac2ad0fc6 SHA-1: 3a8cc729f81a98af81e26a17bcb8dd1b3be9335b SHA-256: ee7a5cbeded9b40c00a4fce9a31d203dd8b3e139ea49e119dfabfbe3b5a7f698
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The ML classifier strongly flagged this PDF as malicious. While no scripts were extracted, the document's content and embedded URLs indicate a phishing or scam attempt, likely serving as a lure for further malicious activity.

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.tw/app/431946152/get-free-robux-game-hack In PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/tiktok-comments-free_GM835599320.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/how-to-get-free-outfits-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/coin-master-hack-unlimited-spins-and-coins-cheats_GM406889139.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/get-free-spins-on-coin-master-links_GM406889139.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/coin-master-heaven-free-spins-link_GM406889139.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/free-coin-master-stuff_GM406889139.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/coin-master-hacksco_GM406889139.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/coin-master-free-spins-today-new_GM406889139.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/coin-master-free-spins-no-generator_GM406889139.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/free-robux-live_GM431946152.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/robux-generator-no-human-verification-or-survey_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_off00002eae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EAE 21312 bytes
SHA-256: e27e6ea43644933cc1f9395688032851241b971f68d7042efebab886acb100ae
font_01_sfnt_off00005d1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D1D 18820 bytes
SHA-256: 04d56578d6fa3a791f42370f0ef4c3dea66af1fdc194d67c4390c65d423efb6d

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