Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf1a946e035924ef…

MALICIOUS

PDF

34.5 KB Created: 2021-06-17 23:39:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: f2a1407e2a10bd33c0a5553b2cc3730c SHA-1: b8a3d85e031391d027e45d5a0becf2ce830a172a SHA-256: cf1a946e035924efc87e0b5ce79b6efb4f452a1557c9c656f5b15291f6ba4420
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a prominent link disguised as a game hack generator, specifically for Roblox. This lure, combined with the 'ML_NYX_PDF_MALICIOUS' heuristic and the presence of embedded URLs, strongly suggests a phishing or malware distribution attempt. The document body, though partially corrupted, reinforces the lure by mentioning 'Roblox How To Hack Into Builderman' and includes numerous related URLs.

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/roblox-how-to-hack-into-builderman-game-hack PDF link annotation
    • http://perpustakaan.ipts.ac.id/repository/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/roblox-install-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/minecraft-xbox-one-code-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/free-bugatti-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/coin-master-unlimited-spin-and-coin-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/free-roblox-paladins-exploits_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/sk8er-download-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/roblox-2021-how-to-cheat-in-fencing_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/cs-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/roblox-hack-gui_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/earn-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/free-robux-now-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/hack-tiktok-fans-free_GM835599320.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/minecraft-apk-android-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off00002fbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FBC 21780 bytes
SHA-256: c9e5d83cdf3ccbcdd7d962a5de3f368672947cc0d590497e6f1c25a62e766a5d
font_01_sfnt_off00005ff8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF8 19620 bytes
SHA-256: f049da812dfd1b1ad61c306f2a31ee3ff46e0fbe93a6646f8cb277b979805ba5

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