Malicious PDF — malware analysis report

Static analysis result for SHA-256 baf5c08de86dc111…

MALICIOUS

PDF

44.5 KB Created: 2021-05-11 05:01:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8792f630ba262fb644d00be6b3cf10b4 SHA-1: 1e6fe80f439573e9434902139dc1817b3b1d7572 SHA-256: baf5c08de86dc111af3f6588e593614437fe82860bec55cce7a5b983835efe76
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting "free generator / game hack" lures. The ML classifier strongly indicated maliciousness, and the presence of a visual download button further supports a deceptive workflow. The primary IOC is the redirector URL which is likely used to serve a second-stage payload.

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 https://netcdn.xyz/app/479516143/minecraft-free-download-unblocked-game-hack In PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/minecraft-xbox-360-free-download-code_GM479516143.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/free-vip-roblox_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/coin-free-master_GM406889139.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/coin-master-hack-mod-apk-unlimited-spins_GM406889139.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/roblox-heroes-online_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/how-do-i-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/coin-master-today_GM406889139.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/freespins-coin-master_GM406889139.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/strucid-aimbot_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/getrobux-come_GM431946152.pdfIn PDF document text
    • http://sistem.amikomsolo.ac.id/perpus/repository/20-free-spin-link-coin-master_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
stream_003_off00004cfd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CFD 28300 bytes
SHA-256: b5936ee952274cb8b546bfce87e67611c27ac975d9bac8337432be8632d5d343
font_01_sfnt_off00008a4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A4B 18804 bytes
SHA-256: 351b73efa1cf4358b07b283040b01ec481d6b0b50516ad4f4e94e13994b713ed

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