Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ca4c98a4a32ddde…

MALICIOUS

PDF

34.4 KB Created: 2021-06-28 05:29:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 96034dd04a08f33dec43840b156e4b75 SHA-1: af90703568d333183925726ae995299522d11e3f SHA-256: 6ca4c98a4a32ddde1f79618a32a4ba6796bf7b1ca71deb9d62df3e1274196322
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains links that lead to a known malicious redirector, disguised as game hacks and generators. The document body and embedded links suggest a social engineering lure to trick users into visiting potentially harmful websites. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence 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/roblox-bakers-valley-cheats-game-hack In PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-fb-free-spins-link_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/can-you-earn-free-robux-in-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/earn-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/cm-spins_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-free-vip-in-roblox-top-model_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-roblox-photoshop-apps_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-easy-tix-cheat_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-hack-level-7_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-pet-food-hack_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-free-giveaway-obby_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-promo-codes-pastebin_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-fe-btools-script-hack_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-free-robux-bc-only_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-group_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-money-hack_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_off00002e51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E51 22512 bytes
SHA-256: 6c6847802f9890d04c22bee0d5cf94a022ba4fb15738f64c5c67e241c2105250
font_01_sfnt_off00006081.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6081 19240 bytes
SHA-256: bf9d30707987765ad84ca9b7fbd7a2c119b6ce30a12c28ca770f579b165ba176

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