Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e17747b4a4b208d…

MALICIOUS

PDF

43.6 KB Created: 2021-06-03 14:25:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 4528c4d4a2a8668b68bfbccf92ccea42 SHA-1: 2d38a2a99e24146eb5ac8e9ae7c885678c5eac6d SHA-256: 7e17747b4a4b208d46909c330febe5da188e4875b5ba39c1c98e8a53f60cb1c0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to a suspicious URL. The document body, though heavily obfuscated, also contains this URL. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

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/free-spin-coin-master-game-game-hack In PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/coin-master-free-cards-and-spin-link_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/coin-master-70-spin-link-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/free-minecraft-java-edition-account_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/free-robux-images_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/minecraft-cracked-client_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/coin-master-free-spins-no-generator_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/https-rbx-place-rewards_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/como-hackear-coin-master-sin-verificacion-humana_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_off000050ac.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50AC 24204 bytes
SHA-256: ea31af8c2de8c8a65553f02b2eac29f4caf853cfa2f715620502d35181cd06ad
font_01_sfnt_off0000882a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x882A 18148 bytes
SHA-256: 05f474a5dd778b1a8f82bb3f3194e0f6909204339d3dcef5442e6da61b36e890

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