Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab5eee05031120b0…

MALICIOUS

PDF

33.2 KB Created: 2021-07-05 12:12:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f9ffa4e2d13f1dcebd0e6ed9ceea9886 SHA-1: 4eba1c3b26fdeb6735fbfb4a710922863ab5d607 SHA-256: ab5eee05031120b096ea07c2c325a901e4b9f5d36e51a89b5c89fdf0714c0645
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a password-protected-archive lure. 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 0.9824

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/431946152/roblox-hacked-version-download-game-hack PDF link annotation
    • http://daskrimti-jabar.web.id/library/repository/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-robux-no-human-verification-superfast-inspect-no-password-2021_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/pubg-uc-30_GM1330123889.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/roblox-images_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/legit-coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/noob-vs-pro-vs-hacker-vs-god-minecraft_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-to-get-bear-mask-free-roblox_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-game-legitimate-hack-without-signing-up-or-shareing_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/5-robux-free_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/speed-hack-roblox-ccv3-2021_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-free-robux-no-fike_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/getting-hacked-on-roblox-prank_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/mad-factor-mad-city-hack-roblox_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/coin-master-free-spins-link-today-blogspot_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-boombox-gear-free_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_off00002bc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BC7 21952 bytes
SHA-256: 65a62feefd3920002e6ad75eb887555e9b09a1d15dc4da3d7b8044f4b992ca7b
font_01_sfnt_off00005bdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BDB 19416 bytes
SHA-256: 9d5287d246acb7a414ddd994cb225a807af433da1dde6decd511f50bd1ef31e8

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