Malicious PDF — malware analysis report

Static analysis result for SHA-256 09d8712162c429ce…

MALICIOUS

PDF

33.6 KB Created: 2021-06-29 13:05:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: fa5ef8c2442ed5b22665fc58176a23c3 SHA-1: cc355d7e8a4ef2e4f093f3b1fedb41c1e7dea48c SHA-256: 09d8712162c429ce9d962dab5b9d45fd28af0b5a9e0b53eb8f72046c07342abb
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/431946152/free-cloth-in-roblox-game-hack PDF link annotation
    • http://perpus.stmik-im.ac.id/repository/free-unused-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-free-clothes-girl_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-get-free-robux-2021-not-patched_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-daily-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-free-robux-game-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/sites-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-account-been-hacked_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/robux-cheat-codes-2021-pc_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-face-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-rpg-hack_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-free-spins-and-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/but-link-says-free-robux-walter_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/comment-avoir-des-robux-gratuit-avec-hack_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-get-free-robux-on-roblox-december-2021_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_off00002ec7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EC7 21816 bytes
SHA-256: 00d20ca9eb7013c7abb063bb47587af1b88f1a4ded35b39b3016c1ec0a174fce
font_01_sfnt_off00005ebd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EBD 18920 bytes
SHA-256: 5cb28285abdbcc4b8c793abbdd57358ae8bf3c0a060690ed9c2c3797abd61ba3

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