Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9e9866abe8f87a6…

MALICIOUS

PDF

34.5 KB Created: 2021-07-06 06:00:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8ab4aaa1acb8a69984f311127f6f6b5a SHA-1: 9d49e80d826abea8ed6cd23d46fa8a9417309317 SHA-256: d9e9866abe8f87a6bcdbd6ffbe90a56ebc8d9366730fd0c06f72925edb6a4752
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a prominent external URI pointing to sites offering game cheats and hacks, suggesting a phishing or malware distribution lure. The ML classifier strongly flagged this PDF as malicious, and the presence of external links indicates an attempt to redirect the user to a potentially harmful resource. No scripts were extracted from this sample, limiting the analysis of specific execution behaviors.

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/roblox-cheat-codes-game-hack In PDF document text
    • http://lib.fekon.untad.ac.id/repository/safe-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/minecraft-free-download-2021_GM479516143.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-roblox-gamepasses-script_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/websites-that-give-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-hack-someones-account-in-roblox-apex_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-roblox-accounts-dantdm_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-get-back-a-hacked-accout-back-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-comcom_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-change-your-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/get-2021-free-robux-daily_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-get-hack-for-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-hack-in-roblox-prison-life-v20_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-33-hack-version-download_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-free-download-for-android-tablet_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/como-crear-hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-hack-mobile_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-person_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/freerubux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-do-you-hack-accouts-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-use-a-hack-script-in-roblox-pet-simulator_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_off00002f9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F9D 22528 bytes
SHA-256: 53a8e5cd0b87b8e92bac7f89d82b15c84f5efbce3d8f68ac1552225028955fb8
font_01_sfnt_off00006214.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6214 18932 bytes
SHA-256: a95ed2ebfaa41175af61b40c976dd9a66f12315416a1f48c3ae7e56a22336851

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