Malicious PDF — malware analysis report

Static analysis result for SHA-256 84c37ce31f98f9dd…

MALICIOUS

PDF

57.8 KB Created: 2021-06-03 20:49:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 31b07980d853e9d5f9330cb431f11d42 SHA-1: 3dcc1121e012171faaf49dbb6809d2e51aa968b3 SHA-256: 84c37ce31f98f9ddea9c9ed8e8b174db89a564e17dd8e02665b00cb3fb88ee8d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9612

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/406889139/coin-master-daily-spin-free-game-hack PDF link annotation
    • https://new.minsatulearning.com/__statics/gudangsoal/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/coin-master-free-spins-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/coin-master-free-spins-a2z-help_GM406889139.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/free-robux-rewards_GM431946152.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/minecraft-build-hacks_GM479516143.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/coin-master-free-spins-cash_GM406889139.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/how-to-free-robux_GM431946152.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/today-free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/minecraft-tools_GM479516143.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/free-robux-script_GM431946152.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/coin-master-free-spin-app-apk_GM406889139.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/free-robux-only-username_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005477.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5477 26480 bytes
SHA-256: f5002220e3835409b8a591c65ad8d2be87e4cacd5e263039416dd7bd611dc8bf
font_01_sfnt_off00009279.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9279 3152 bytes
SHA-256: 1bd985f7cab931e546a7114ee80c1df3885b38349add8be3963c1931efeb4240
font_02_sfnt_off00009d87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D87 7960 bytes
SHA-256: cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2
font_03_sfnt_off0000b0ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0AC 18308 bytes
SHA-256: 213ea0fed5678e19eff32fcc5d46e69a4f1b73f67043b57a178cf12547108d4a
font_04_sfnt_off0000d2ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2BA 4272 bytes
SHA-256: fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0

Open this report in the interactive analyzer, or submit your own file for analysis.