Malicious PDF — malware analysis report

Static analysis result for SHA-256 b094810e60164b72…

MALICIOUS

PDF

34.5 KB Created: 2021-07-05 19:06:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 133a3ae5e252f291e2291f952129bd94 SHA-1: 7484461aeca5a27dcd833067698a57f47e44d107 SHA-256: b094810e60164b72719fba2cf505bc30dfa406258cffb1b474f0a5dfcb93120a
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for game hacks and generators, directing users to a known malicious redirector. The primary link, http://netcdn.tw/app/479516143/minecraft-java-edition-download-free-game-hack, is designed to lead users to potentially harmful content or further malware. The document's structure and embedded URLs strongly suggest a phishing or social engineering attack aimed at tricking users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/479516143/minecraft-java-edition-download-free-game-hack In PDF document text
    • https://perpustakaan.urindo.ac.id/repository/roblox-free-download-games_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/robloxhacks_GM431946152.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/free-tiktok-followers-without-survey_GM835599320.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/install-free-game-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/roblox-bloxburg-free-money-glitch_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/free-robux-com_GM431946152.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/cheat-roblox-elemental-battlegrounds_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/coin-master-free-spins-generator-no-human-verification_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/free-tiktok-likes-generator_GM835599320.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/coin-master-daily-free-spin-and-coin_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
font_00_sfnt_off00003154.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3154 22200 bytes
SHA-256: ad1d0d399b8e2e4b30bcd0166c1f5a82704a5a43c65957e19772c6fade6887ed
font_01_sfnt_off00006298.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6298 18856 bytes
SHA-256: 5b5dffd1801a7646d4903e54774a45840ad7d6456fb30c9e0aec91f174fc5586

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