Malicious PDF — malware analysis report

Static analysis result for SHA-256 03a37904bb620495…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 20:14:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 3f6baba97e313ce508288abef96dbbba SHA-1: 936dcd86070a72184f0ba5c5fe1f0bcbf498e293 SHA-256: 03a37904bb6204952b92648a972236ea1b78651a555f8ba75581468e25004f3b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as "free generator / game hack" lures. The document body and embedded links suggest a scam related to game cheats and in-game currency. The presence of multiple redirector links indicates a high likelihood of malware distribution or phishing.

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/get-free-coins-for-coin-master-game-hack In PDF document text
    • http://lib.icbc-indonesia.org//repository/easy-robux-today_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/roblox-apk-download-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/minecraft-pe-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/cheat-codes-feels-great-roblox-id_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/cheat-codes-for-roblox-dragon-ball-rage_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-robux-august-2021_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/robux-download_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/pokemon-go-free-roam_GM1094591345.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/how-to-get-minecraft-pe-for-free-ios_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/roblox-robux-card-hack_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/roblox-hack-extreme-nijecotr_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/coin-master-levels_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/big-brother-roblox-exploits-free-download_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/demon-roblox_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/coin-master-hack-org_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-robux-with-out-human-ver_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/tiktok-free-hashtags_GM835599320.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_off000035af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35AF 22004 bytes
SHA-256: 9b5a1ddb4024165f1beee6cf3f0c643709f8d9cd939258695541ac1763d09623
font_01_sfnt_off00006625.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6625 17996 bytes
SHA-256: 793c2fef5a083e44e02865ee398021caab62ffe133b92055440f57cdc5712e5a