Malicious PDF — malware analysis report

Static analysis result for SHA-256 b567f0c48ff6e586…

MALICIOUS

PDF

35.8 KB Created: 2021-06-29 20:37:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6a520efd5934389806ab19748ac16a14 SHA-1: be31a6fbc587cac44d09b234a74baffe2ca48946 SHA-256: b567f0c48ff6e586d91fde584eff510c2a6cdbc4d134e10a87f430aff7295f36
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure for free game currency or hacks, specifically mentioning 'Robux' and 'game hack'. It contains multiple embedded links, with one prominent URL pointing to known malicious redirector infrastructure. The document body and heuristics indicate a social engineering attempt to drive users to potentially harmful websites, likely for credential harvesting or further malware delivery.

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-free-robux-no-hack-no-download-game-hack In PDF document text
    • https://library.iuli.ac.id/repository/royale-high-roblox-diamond-hack_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/bird-simulator-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/tiktok-free-followers-2021_GM835599320.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-free-robux-for-wiewers_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-pics_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-free-spins-glitch_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-free-robux-100-real_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/hacking-websites-for-robux_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-hack-me-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-2021-unpatched_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-get-free-coins-on-meep-city-roblox-2021_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-chat-hacks-script_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/robux-hack-no-reward-in-survey_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-roblox-card-generator-no-surveys_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_off000034b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34B7 22108 bytes
SHA-256: 5aa8da0cc34e51988c639d2069be244384c85a019d8f97e690a4bd22473d4226
font_01_sfnt_off0000654f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x654F 19572 bytes
SHA-256: 856251900293feddfb2d0dbfed8fbb72d43c47bf0891256b14587ecc4ab166cb

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