Malicious PDF — malware analysis report

Static analysis result for SHA-256 f685ec80955d7179…

MALICIOUS

PDF

34.9 KB Created: 2021-06-19 15:14:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a848272b9ab4f6ff23c47a996601b7c5 SHA-1: 71e146bac05d07c664227d6ea17d2cc604628882 SHA-256: f685ec80955d717962d9ae8cc581dfcc196ecaff308fa91f2b5a730445b2d255
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for game hacks and free currency, with a prominent link to a known malicious redirector. The ML classifier also flagged this PDF with high confidence. The embedded URL likely leads to a phishing or malware download page, attempting to trick users into clicking through a malicious link.

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/how-to-get-on-bloxburg-for-free-on-roblox-game-hack In PDF document text
    • http://repository.unla.ac.id/repository/coin-master-free-coins-link-facebook_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-get-legit-robux-for-free_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-hack-2021-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/minecraft-client-download_GM479516143.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/lazyblocks-com-robux_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/ww-roblox-come_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-cheats-and-hacks_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/minecraft-free-online-unblocked_GM479516143.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-how-to-activate-hack-gui-script_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-dinosaur-world-progression-cheat_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-hack-tool-no-human-verification_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-robux-hack-us_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_off0000318a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x318A 22368 bytes
SHA-256: 446df5fbba1dce514f27219bba78666446ecef7a8e6a9544c0e6ff7b11b80e50
font_01_sfnt_off00006342.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6342 19056 bytes
SHA-256: b5dc2e2638b94113e1bb0b4c710951aef49ecf2d4cf828204b8c4cdd233f94cd

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