Malicious PDF — malware analysis report

Static analysis result for SHA-256 82e98830203f673c…

MALICIOUS

PDF

47.9 KB Created: 2021-06-03 05:54:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 971d54ef0bda570d0c3737ddc9269198 SHA-1: 6fba202b206b67a95f1bd59a47681003648967c6 SHA-256: 82e98830203f673ca4c212752d85ee19fdaad22a7a79f72e188ad6f8a23737fd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free currency, directing users to a known malicious redirector. The document contains multiple embedded URLs that likely serve as part of a phishing or scam campaign. The primary malicious URL identified is https://netcdn.online/app/431946152/roblox-fun-com-robux-game-hack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/431946152/roblox-fun-com-robux-game-hack In PDF document text
    • http://lib.untad.ac.id/repository/haktuts-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/pokemon-go-free-gifts_GM1094591345.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-do-you-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-daily-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/get-free-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-make-your-own-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-hack-game-download-ios_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/the-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/apps-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/grabpoints-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/20-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/minecraft-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-hack-tool-v1-9-pc_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-hack-apk-35-8_GM406889139.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_off000053e4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53E4 25044 bytes
SHA-256: cee01542b041f2e60984bab4a425af5ee902220011797c96bfca6b7300a0a795
font_01_sfnt_off00008d1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D1C 3460 bytes
SHA-256: 7f0b48eec8e6fd5b18d168c9ddbcaf2fa2459a2caa093712ac32cf07a4771a7d
font_02_sfnt_off00009887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9887 18348 bytes
SHA-256: 667e6d730a8a95846a6995e98a73d1f6ef2b359f0131404b1b78749ced9a3a97

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