Malicious PDF — malware analysis report

Static analysis result for SHA-256 163f627f2da8ce43…

MALICIOUS

PDF

36.1 KB Created: 2021-07-04 08:17:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 6657a932257de4ebd1d82713452115e6 SHA-1: 691f5e4d1e33e4378628d6ff073e1ba411e736d8 SHA-256: 163f627f2da8ce43abdfc58dc21a3384c2d615788fb77f23ebd8c8817bd93a5c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a game hack lure to entice users to click on a malicious URL. The primary link, http://netcdn.tw/app/431946152/roblox-adopt-me-hacks-2021-game-hack, is presented as a way to get hacks for Roblox. The document body and heuristics confirm this redirection behavior, indicating a phishing or malware distribution attempt. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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.tw/app/431946152/roblox-adopt-me-hacks-2021-game-hack PDF link annotation
    • https://perpustakaan.itda.ac.id/repository/free-tiktok-likes-app_GM835599320.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/minecraft-linux-free_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-free-coins-generator_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/hack-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-get-coin-master-free-spins-in-email_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/admin-vs-hacker-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-home_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-adidas-shirt-free_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/cheat-in-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-new-link-free-spin_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-we-are-number-one-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/fly-hack-roblox-cheatgg_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/get-roebucks-com_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-roblox-animations_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_002_off00003096.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3096 24032 bytes
SHA-256: f585126e828fa70fdf91d9bdc493d508892799ac1394d863d65e3be4f95ac1c2
font_01_sfnt_off00006617.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6617 19708 bytes
SHA-256: 3e7968c6009158f39a26a5e9beb619e98d82cfcdddd9bb58ca36d4861618e68e

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