Malicious PDF — malware analysis report

Static analysis result for SHA-256 26195d89af5c2761…

MALICIOUS

PDF

34.3 KB Created: 2021-06-27 18:47:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f000bbcea246525f4509e28c5293cfe2 SHA-1: e1493f1215a54407df4af60ca863f31b79808590 SHA-256: 26195d89af5c27611ee28b3821e1c4e3f7ea7fa959f517858497d09bc22b2bbe
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links to a known malicious redirector, disguised as game hack generators. The ML classifier strongly flagged this PDF as malicious. The embedded URLs likely serve as a lure to download a second-stage payload or lead to a phishing site.

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/mob-buster-robux-hack-game-hack In PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/free-robux-2021-hack_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/hire-someone-to-hack-a-roblox-account_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/como-usar-hack-en-los-juegos-de-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/roblox-edit-money-value-cheat_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/pastebin-headless-horseman-free-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/free-roblox-veify-hat_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/roblox-game-dev-life-free_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/free-card-codes-robux_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/fort-wars-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/weapon-hack-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/hack-gen-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/roblox-cookies-roblosecurity-free-cookies_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/robux-free-com_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/free-robux-for-surveys_GM431946152.pdfIn PDF document text
    • http://digilib.pustaka.unand.ac.id/repository/roblox-phantom-forces-rank-hack_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_off0000301c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x301C 22180 bytes
SHA-256: 01a5e98fd3d9f6fc391d85a2add6ddd13d4fc1fcfe5d5f124922886249e5aef6
font_01_sfnt_off0000611d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x611D 19024 bytes
SHA-256: 66e6d22b5ae4706c84d4d210eb99e584977bcb72fae0da715ea6a0c37fcde334

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