Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b3f6d83785f5c6e…

MALICIOUS

PDF

35.5 KB Created: 2021-07-04 10:15:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 4b89af9cac7a35e66feb7bbdc40a88bf SHA-1: ad62dcab3c06f9cabf96fa995f9f32354cbad286 SHA-256: 2b3f6d83785f5c6ea340b6841707cc7a0569da911de43343e79599b5fb379844
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.tw/app/406889139/how-to-get-stuff-that-cost-coins-free-mpe-master-game-hack PDF link annotation
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/free-minecraft-wallpaper_GM479516143.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/v3rmillion-hacks-roblox-ro-ghoul_GM431946152.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/free-robux-net_GM431946152.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/roblox-account-free-hack_GM431946152.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/apps-that-will-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/rexex-free-robux_GM431946152.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/gamesofficenet-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/master-coins-free_GM406889139.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/free-spins-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/fashion-frenzy-roblox-game-free-download_GM431946152.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/bl4z3games-co-free-robux_GM431946152.pdfIn PDF document text
    • http://www.goaheadmigration.com/uploaded_files/userfiles/files/can-you-get-roblox-free-on-the-switch_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_off00003522.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3522 22564 bytes
SHA-256: 1449d685a93d97059d962618cfbef1488d9c06658fd832182b890c88d8923154
font_01_sfnt_off0000676c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x676C 18644 bytes
SHA-256: f341af33f223298e3a2d53ab743efb7ab8fae9c2fa52f38672b2c2fff0ff9f55

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