Malicious PDF — malware analysis report

Static analysis result for SHA-256 8469ee5e0d897e23…

MALICIOUS

PDF

35.4 KB Created: 2021-07-05 23:38:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 8df07ee873e591d426878ac4ce60c02d SHA-1: c9e23a4aeedde46941ed4ab6e67b27ce6fd6b6ce SHA-256: 8469ee5e0d897e23416e5cd5b104289148d73cd96a53da932071f1010627aa86
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure related to game hacks and free currency to entice users into clicking malicious links. The primary link redirects to known malicious infrastructure, suggesting a phishing or malware distribution campaign. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a malicious intent to redirect users to potentially harmful content or downloads.

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/431946152/www-roblox-com-robux-free-game-hack In PDF document text
    • http://cintabaca.org/katalog/repository/cloudbux-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/withdraw-robux_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-svg-free_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/can-you-get-banned-for-cheating-on-private-server-roblox_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-free-body_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-robux-hacks-for-free-robux_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-how-to-have-free-obc_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-gift-card-hack_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/coin-master-free-spins-link-deutsch-ios_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/people-on-roblox-who-give-free-things_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-hack-robux-into-your-roblox-account_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/a-promo-code-that-gives-us-free-robux-no-waiting_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/robux-hack-v6-5-mythical_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/are-there-any-coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-hack-roblox-account-with-inspect-element_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/minecraft-free-download-mac-full-version_GM479516143.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_off00003232.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3232 22556 bytes
SHA-256: e4d069ab0ed9f7c0f101439a3e2b8245449fe5ece39272eb145266e6a4cfca2f
font_01_sfnt_off00006475.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6475 19412 bytes
SHA-256: e3c8c7c2ff0f885c816f02c31cddbc793d7a6ff74f38847110c716c7ceebbac0

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