Malicious PDF — malware analysis report

Static analysis result for SHA-256 7420f53a6711765a…

MALICIOUS

PDF

34.7 KB Created: 2021-06-30 12:20:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: e6ddaccd35c0add72079b9f8ff07fa51 SHA-1: 132a800ce958053254fb8d4d8811a86fd7cedfb4 SHA-256: 7420f53a6711765a8f05d8cfd08f1c554bc2e1c90d6b135715e1747568d75a07
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to what appears to be a game hack or generator lure, specifically targeting Roblox and Coin Master. The primary link, http://netcdn.co/app/431946152/como-descargar-roblox-hackeado-2021-game-hack, is flagged as a malicious redirector. The document body and heuristics indicate a social engineering tactic to trick users into visiting malicious sites, likely for further malware delivery or credential harvesting.

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/como-descargar-roblox-hackeado-2021-game-hack In PDF document text
    • https://planetzoe.hr/files/coin-master-hack-ios-download-2021_GM406889139.pdfIn PDF document text
    • https://www.planetzoe.hr/files/hotels-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/get-free-robux-info_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/robux-download_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/free-robux-mod_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://planetzoe.hr/files/how-to-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://planetzoe.hr/files/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/how-to-change-your-username-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/get-free-spins-on-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.planetzoe.hr/files/free-minecraft-codes-2021_GM479516143.pdfIn PDF document text
    • https://planetzoe.hr/files/gengreating-free-roblox-redeeem-codes_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://www.planetzoe.hr/files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/roblox-vehicle-simulator-free-vip-server-link-2021_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/roblox-avatar-editor-free_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/roblox-hack-no-human-verification-2021-no-survey_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/how-to-create-a-minecraft-server-for-free_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_off00003033.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3033 21952 bytes
SHA-256: c4a585e54b63861132a377cf2d1ec85b636639d090fe5edd99ca4aa4ebf392dd
font_01_sfnt_off000060ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60AB 19660 bytes
SHA-256: 5604877efa1bb043d8e7e66be39eb008c161fa52a3d0a4ca06e60898064c9ddd

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