Malicious PDF — malware analysis report

Static analysis result for SHA-256 18d5a5775f8f4a6f…

MALICIOUS

PDF

46.9 KB Created: 2021-06-03 23:13:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 649a13b086bbadcb37fbd40c2724aba9 SHA-1: 2bd0e0c2276bce2bef67d3fdef451887760d0fd4 SHA-256: 18d5a5775f8f4a6f7e859535e9764ff6d1c4babcdcabbb5920531eb9d6f8d5e3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and converters to entice users to click on embedded links. The primary link, https://netcdn.online/app/479516143/universal-minecraft-converter-free-game-hack, is identified as a malicious redirector. The document's structure and embedded links suggest an attempt to lead users to potentially malicious sites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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 https://netcdn.online/app/479516143/universal-minecraft-converter-free-game-hack In PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/free-roblox-money_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/minecraft-free-app_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-cheat-engine-hack_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-free-coins-app_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/robux-redeem_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/minecraft-free-download-mac-full-version-2021_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/body-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-hack-uk_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coinmaster-com_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/are-there-any-coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-minecraft-skins-pe_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005310.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5310 24956 bytes
SHA-256: 35ee3920946225605436516e4ed899cc5e9393700bfc56c86dc26af33dbe3a5b
font_01_sfnt_off00008b3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B3C 2940 bytes
SHA-256: ae8acc7f13e86db3aed98d7dfb73e70e16f4dedb45e9f0467460b76f54e1a1bb
font_02_sfnt_off0000954a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x954A 18084 bytes
SHA-256: e9d0f0345694b9a79203755563a3dfebd4f00fdb0e59242a0f52e95bef3afb94

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