Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bba2d30ffceefc2…

MALICIOUS

PDF

36.1 KB Created: 2021-07-05 13:58:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: cf0b5372e438fa2f1963d272e89614d6 SHA-1: a9002d49f9ef676b2a87f70707ceac497f12cbff SHA-256: 6bba2d30ffceefc22466499cd4c0d6ff543f29739178451e52fb9dafd009a094
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appears to be a free generator or game hack. The primary link, http://netcdn.tw/app/406889139/online-coin-master-free-spin-app-game-hack, is identified as a malicious redirector. The document's structure and embedded links suggest an attempt to direct users to potentially malicious websites, likely for phishing or malware distribution.

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.tw/app/406889139/online-coin-master-free-spin-app-game-hack In PDF document text
    • http://lib.bppsdmp.pertanian.go.id/main/repository/earn-free-robux-online_GM431946152.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/firestone-training-map-free-model-leaked-roblox_GM431946152.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/robux-free-c_GM431946152.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/como-hackear-cuenta-de-roblox-sin-saber-la-contrasea_GM431946152.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/bunbun-girl-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/main/repository/how-much-tiktok-free-view-creator-fund_GM835599320.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/tiktok-likes-free-2021_GM835599320.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/what-do-roblox-points-do_GM431946152.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/free-jeff-the-killer-face-roblox_GM431946152.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/free-printable-roblox-images_GM431946152.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/robux-xyz_GM431946152.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/minecraft-free-android_GM479516143.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/como-descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/roblox-dick-hack_GM431946152.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/main/repository/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/minecraft-pe-free-download-android_GM479516143.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/roblox-hack-get-unlimited-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/roblox-sword-blox-online-hack_GM431946152.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/roblox-boku-no-roblox-remastered-hack-proxo_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
stream_002_off0000345d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x345D 23992 bytes
SHA-256: 85cf411477cd3533faf2ac9939fbf8e65bd4a5352ab7919dfca6a8d260a99123
font_01_sfnt_off00006afa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AFA 18248 bytes
SHA-256: 8511f034c042b64c11128f6e64b973dd4e7735d2e311e35d0d6ef7240f4bb090

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