Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba9471c9d2fb837c…

MALICIOUS

PDF

43.6 KB Created: 2021-06-03 04:59:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d2e6bb5fad6053f31ccb915333870b15 SHA-1: 1e2b1ef524a167b0608de59004494a51aaa96529 SHA-256: ba9471c9d2fb837cb03bcae5923f5f7728fc9757d0b94b5fe6f6cbbea9eeda02
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one identified as a malicious redirector, leading to a 'game hack' lure. The document body and embedded URLs suggest a social engineering attempt to trick users into visiting potentially harmful websites. No scripts were extracted, but the presence of malicious links and the lure indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/moonactive-coin-master-free-spins-game-hack In PDF document text
    • https://digilib.darmajaya.ac.id/repository/coin-master-free-spin-redeem-code_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/coin-master-free-link-app_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/roblox-earn-robux_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/coin-master-unlimited-spin-hack_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/how-to-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/actual-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/free-coin-spin-daily-link-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/is-windows-10-minecraft-free_GM479516143.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/coin-master-free-spins-2-5-2021_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/hack-coin-master-32-mod-apk_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/daily-free-spins-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_004_off000050d5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50D5 24676 bytes
SHA-256: 09d71b191e03f54f11a16f066ec76ddcf02d69eed4d35d216641df0006f18474
font_01_sfnt_off0000887f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x887F 18000 bytes
SHA-256: 607e24879c86e77aea2ecea8189ce1ac53cb07a44b728ea7b5016cea096443a5

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