Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ffb59dcc48e6739…

MALICIOUS

PDF

34.6 KB Created: 2021-06-29 01:21:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7d55026dd3edfb4b390aacd7f7a9e48d SHA-1: 5b0459e50b3b93bd41064794cffa78bc655f2540 SHA-256: 8ffb59dcc48e6739a9f81509f7cdb4bebeaff5ea054e02d92629bdabc9b306e8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ML classifier strongly flagged this PDF as malicious, and it contains numerous embedded URLs pointing to game hacks and cheats. The document body, though partially corrupted, also contains references to these hacks and a primary URL, suggesting a lure to download potentially harmful content. No scripts were extracted, but the presence of external URIs and the high ML score indicate a high likelihood of malicious intent.

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/ultimate-driving-roblox-hack-game-hack In PDF document text
    • http://lib.fekon.untad.ac.id/repository/jojno-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-rub-hack-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-get-a-free-face-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-case-clciker-hack_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-hacks-for-pet-food_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-hack-prision-life-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/apps-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-cheats-deutsch-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-duplicate-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/como-conseguir-el-egg-hunt-de-hacker-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-hack-roblox-account-february_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/auto-kill-hack-roblox-assassin_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-kick-off-hack-download_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-spins-on-coin-masters_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_off00002f2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F2C 22420 bytes
SHA-256: 0c85377713ccca786cf76bb714548cdb94ee74af572dc94db58aa0fbab044ea2
font_01_sfnt_off0000610b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x610B 19420 bytes
SHA-256: d2c63f0f57c8c3a37d29a8fc2d310b9ee2a1f803ee7c530734e4397197481b5e

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