Malicious PDF — malware analysis report

Static analysis result for SHA-256 9be95bc7c7af8bdd…

MALICIOUS

PDF

33.8 KB Created: 2021-07-04 10:15:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 40d91bb2ffa18a2827e2c71154e4780b SHA-1: 3107f009b7df3ff6010a9461330de08f73f8068b SHA-256: 9be95bc7c7af8bdd2b1ee5a8f049dd2f403ddfa16000fb9652f7f79d8efb4a05
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector infrastructure, specifically promoting 'free generator / game hack' content related to Roblox. The heuristic firings indicate these links lead to known malicious redirectors. While no scripts were extracted, the embedded URLs and the nature of the lures suggest an attempt to drive users to potentially malicious sites for credential harvesting or further malware delivery.

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/free-roblox-toy-codes-not-used-game-hack In PDF document text
    • http://lib.mappifhui.org/repository/free-robux-no-survey-and-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/robux-sites_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-com-r_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/microsoft-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-coin-master-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-giftcard-codes-july-12-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/overhaul-roblox-free-shop_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/best-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/checkbackgroundnet-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-hack-a-player-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-roblox-tshirt-shark-blox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-the-legendary-swords-rpg-hack-script_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/dll-files-hack-for-roblox-vehicle-simulator-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/get-free-robux-info_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/horizon-in-roblox-money-hack-may-2021_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
font_00_sfnt_off00002f9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F9A 21484 bytes
SHA-256: 0926d6519ec0df72aff657b48789b05b349be49bc4883259ec7d67880c163216
font_01_sfnt_off00005eab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EAB 19108 bytes
SHA-256: 7e46580f317f2341111cc3e3bb4543cf5aa0b0f80032ba117b7a990766b99810