Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce3ed937b5cfcb6c…

MALICIOUS

PDF

33.7 KB Created: 2021-07-03 17:43:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 0591b9dfda99173e908c44b8b1cc1529 SHA-1: 92406c11d74261d4ebd5d567dc50f86097c3436e SHA-256: ce3ed937b5cfcb6c93684673d2c21fbc1da8efb0d1e16f49a74b95f042d6b381
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors and external sites, masquerading as 'game hacks' and 'free generators' to entice users. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and the ML classifier strongly indicate malicious intent. The document body contains embedded URLs that are likely part of the lure, aiming to redirect users to download further malicious content.

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/479516143/hack-client-game-hack In PDF document text
    • https://www.xenonsvjetla.com/files/cruise-ship-tycoon-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-get-free-tiktok-fans_GM835599320.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-get-halo-for-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/minecraft-pe-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/asshurt-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-roblox-books_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/best-free-exploit-for-roblox_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/give-free-robux_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coin-master-hack-ios-no-human-verification_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-roblox-money-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/300-daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-get-free-clothing-on-roblox_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_off00003079.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3079 22292 bytes
SHA-256: 7cb9e16f907ed0a7a9b5b521c402dcb00d042f31f52e82d45a84b109e04df6d4
font_01_sfnt_off000061df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61DF 18100 bytes
SHA-256: b74c7ab906109e82ccbdd989a414c9f68291dbe0f36a424a38b948c3064475a3

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