Malicious PDF — malware analysis report

Static analysis result for SHA-256 de41c927b3680191…

MALICIOUS

PDF

33.9 KB Created: 2021-06-20 08:19:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 9942205cb715752275c4f44c48ef525f SHA-1: ab9200e81a188dc452371aa7228debdd35a5f728 SHA-256: de41c927b3680191e21e593366d5905c06dc014303d930c3d25b5594f84c42ab
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 0.9980

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.co/app/431946152/roblox-the-legend-of-the-bone-sword-rpg-hack-script-game-hack PDF link annotation
    • http://gts.edu.gh/library/repository/minecraft-jar-free_GM479516143.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/is-it-possible-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/spin-and-coin_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/impact-hack-roblox-download_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/como-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/working-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-get-free-hair-in-roblox_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/cookies-to-buy-robux-free_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-tricks_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-no-password_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-free-executor_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E1B 21756 bytes
SHA-256: 03828d25d3c44c8ae8869c11440c05b07956291360b1e350dc5907f3e035940a
font_01_sfnt_off00005df3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF3 19560 bytes
SHA-256: 0da9aa5228d4215c949eb3a18442ccf7d4771fae5053c34dd3b86d7452a1c8df

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