Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a74e334684d3d47…

MALICIOUS

PDF

35.6 KB Created: 2021-06-28 04:28:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ee07b880196b985bcd38d82bbf551db9 SHA-1: 2269f3e3f725b2f546aef85a5338cd5dc9238310 SHA-256: 3a74e334684d3d47033b775ca14429da62158b97a221ec32243bef52e29e51de
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 generators to entice users to click on embedded links. The primary link, http://netcdn.co/app/431946152/roblox-music-id-break-free-game-hack, is identified as a malicious redirector. The document's structure and embedded links suggest an attempt to deliver a second-stage payload or lead users to a phishing site.

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.co/app/431946152/roblox-music-id-break-free-game-hack In PDF document text
    • http://cintabaca.org/katalog//repository/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-get-free-clothes-roblox-2021_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/best-free-admin-games-in-roblox_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/script-hack-2021-roblox_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/free-roblox-promo-code_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/rbx-free_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/free-mods-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/hack-roblox-apk_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/free-robux-generator-that-really-works-that-works-right-away_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/free-robux-no-saving-site-youtubecom_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/roblox-free-clothes-generator_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/free-robux-groups-2021_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/free-roblox-boy-hair_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/download-hacked-games-com-coin-master_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/how-can-i-get-free-coinsn-coin-master_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/80-free-spins-coin-master_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_off0000318e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x318E 22796 bytes
SHA-256: 919684422792c8f4f098c48a7a8d29466a52d00f8880c050ae509c7b17916858
font_01_sfnt_off000064f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64F5 19448 bytes
SHA-256: cf3d6f28be876890aa7c7fb43c5fc5275e1d146dd2654aeadda8a31f5f2e34a9