Malicious PDF — malware analysis report

Static analysis result for SHA-256 718db1efc4f48189…

MALICIOUS

PDF

43.3 KB Created: 2021-06-07 07:44:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e958ec9af02de5c57a686b5064808c94 SHA-1: d182faaadca223d21991b0d9ba17cf47bc17bd51 SHA-256: 718db1efc4f481898538a9370f39564e6e2ae80f04ad8f5c069852a059fdd937
74 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-confidence heuristic indicating it links to a 'free generator / game hack' lure, specifically mentioning Roblox. The embedded URL, https://netcdn.tw/app/431946152/roblox-ninja-animation-package-free-game-hack, directly supports this lure. While no scripts were extracted, the nature of the lure and the PDF format suggest a potential for further malicious actions upon clicking the link, such as downloading a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 3

  • 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.
  • 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 https://netcdn.tw/app/431946152/roblox-ninja-animation-package-free-game-hack PDF link annotation
    • http://perpustakaan.stikim.ac.id/slims/repository/how-to-get-free-mods-in-minecraft_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/coin-master-cracked-apk-free-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/coin-master-free-spin-daily-bonus_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/coin-master-free-spins-today-39_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/is-java-minecraft-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/minecraft-beta-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/coin-master-free-pin_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/apk-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-coins-coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/coin-master-bonus_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/pokemon-go-free-or-pokeball-plus_GM1094591345.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/roblox-generator-no-human-verification_GM431946152.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
stream_004_off000050ee.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50EE 25096 bytes
SHA-256: 89a566c1d4fd78b8497269d62bd5f2a0e61de04fdb59c4497158f36b714e1a4e
font_01_sfnt_off00008b48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B48 19460 bytes
SHA-256: 85a2b331f6be4e149e72f5eec924b7817b3911d9c8fd5e437e2db89fef8f3779

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