Malicious PDF — malware analysis report

Static analysis result for SHA-256 149698a0cba4c45f…

MALICIOUS

PDF

34.1 KB Created: 2021-06-24 12:10:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 7450d56b1fa2aac37244dd436cbf026d SHA-1: 1856233cdec06ecf3b7aaea38792f1126152506b SHA-256: 149698a0cba4c45f0e74f13f0ba00ed42d28b22a240c4d1cd463aac4e43eee00
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 0.9980

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 http://netcdn.co/app/479516143/minecraft-116-free-game-hack PDF link annotation
    • https://new.minsatulearning.com/__statics/gudangsoal/files/roblox-girl_GM431946152.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/free-robux-please_GM431946152.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/coin-master-raid-hack_GM406889139.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/minecraft-pocket-edition-apk-free-download_GM479516143.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/coin-master-free-spin-app-iphone_GM406889139.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/free-spin-coin-master-new-link_GM406889139.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/can-i-have-robux_GM431946152.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/www-free-robux_GM431946152.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/free-promo-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/minecraft-free-no-virus_GM479516143.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/minecraft-launcher-free_GM479516143.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/roblox-g_GM431946152.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/coin-master-daily-rewards-link_GM406889139.pdfIn PDF document text
    • https://new.minsatulearning.com/__statics/gudangsoal/files/how-to-get-a-lot-of-robux_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_off00003207.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3207 22172 bytes
SHA-256: aa43a5ac5f87cf8b3a84c45aac9beb25e18f5768450ef1ea4fe1ae0489911232
font_01_sfnt_off0000634f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x634F 18132 bytes
SHA-256: b2108519a49c60d844da2629d098a57ee686039b5b96c7053660c600cced3d73

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