Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bedfdec0ab58035…

MALICIOUS

PDF

45.6 KB Created: 2021-06-07 03:39:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: fc844a3308437d926e28c64519a689d1 SHA-1: e2b1c4887559db92d75c5b8cf91abe767351f488 SHA-256: 7bedfdec0ab58035504552145a991e07a4b43fd26f3f530e3e9f7a913ac92395
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks, specifically for 'Hell on Roblox', to trick users into visiting a malicious URL. The embedded URL, https://netcdn.tw/app/431946152/how-to-hack-hell-on-roblox-game-hack, is identified as a high-risk redirector. While no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to facilitate initial access via social engineering, likely leading to further malicious activity on the linked site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9797

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 https://netcdn.tw/app/431946152/how-to-hack-hell-on-roblox-game-hack PDF link annotation
    • http://www.herricht.at/images/how-to-get-free-spins-on-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://www.herricht.at/images/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://www.herricht.at/images/village-coin_GM406889139.pdfIn PDF document text
    • http://www.herricht.at/images/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://www.herricht.at/images/free-coin-spin-daily-link-net_GM406889139.pdfIn PDF document text
    • http://www.herricht.at/images/fighting-free-card-coin-master_GM406889139.pdfIn PDF document text
    • http://www.herricht.at/images/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.herricht.at/images/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.herricht.at/images/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.herricht.at/images/fbchampion-com_GM406889139.pdfIn PDF document text
    • http://www.herricht.at/images/free-mojang-account-with-minecraft_GM479516143.pdfIn PDF document text
    • http://www.herricht.at/images/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.herricht.at/images/coinmaster-com_GM406889139.pdfIn PDF document text
    • http://www.herricht.at/images/lots-of-robux_GM431946152.pdfIn PDF document text
    • http://www.herricht.at/images/roblox-old-avatar_GM431946152.pdfIn PDF document text
    • http://www.herricht.at/images/free-robux-place_GM431946152.pdfIn PDF document text
    • http://www.herricht.at/images/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://www.herricht.at/images/free-robux-download_GM431946152.pdfIn PDF document text
    • http://www.herricht.at/images/coin-master-hack-with-facebook-login_GM406889139.pdfIn PDF document text
    • http://www.herricht.at/images/download-coin-master-apk-hacked_GM406889139.pdfIn PDF document text
    • https://www.micIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004e47.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E47 24388 bytes
SHA-256: b550672863ab0d796b0566ba092913368be5e6f37168667dedc8936d85b9097d
font_01_sfnt_off00008560.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8560 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008f12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F12 18344 bytes
SHA-256: 3662a233a7aa7d74fda08f7fdb23e0db3e94a2d003a5f3af7c482dc628307260

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