Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e2c94fa01cedb1d…

MALICIOUS

PDF

35.3 KB Created: 2021-07-04 10:06:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 70a9ed6fc4674c6fc7c9169c53a192b7 SHA-1: 6d8799b509eb3a5f42d46add827b81dd159fe312 SHA-256: 1e2c94fa01cedb1d1224b12fe5b4b1c95ec6c24893042acae147856a0a02c495
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document employs a common lure of free in-game currency and hacks for popular games to entice users. It contains multiple embedded URLs that redirect to potentially malicious sites, including one explicitly labeled as a 'free generator / game hack' redirector. The ML classifier also strongly indicated maliciousness, suggesting the document is designed to lead users to a malicious download or exploit. No scripts were extracted from this sample.

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/free-roblox-followers-generator-2021-game-hack PDF link annotation
    • http://rivne.media/ckfinder/userfiles/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://rivne.media/ckfinder/userfiles/files/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://rivne.media/ckfinder/userfiles/files/roblox-sexually_GM431946152.pdfIn PDF document text
    • http://rivne.media/ckfinder/userfiles/files/coin-master-hack-app-for-iphone_GM406889139.pdfIn PDF document text
    • http://rivne.media/ckfinder/userfiles/files/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • http://rivne.media/ckfinder/userfiles/files/is-roblox-free-on-pc_GM431946152.pdfIn PDF document text
    • http://rivne.media/ckfinder/userfiles/files/coin-master-stop-attack-hack_GM406889139.pdfIn PDF document text
    • http://rivne.media/ckfinder/userfiles/files/coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://rivne.media/ckfinder/userfiles/files/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://rivne.media/ckfinder/userfiles/files/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://rivne.media/ckfinder/userfiles/files/youtube-free-roblox-account_GM431946152.pdfIn PDF document text
    • http://rivne.media/ckfinder/userfiles/files/make-free-robux_GM431946152.pdfIn PDF document text
    • http://rivne.media/ckfinder/userfiles/files/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://rivne.media/ckfinder/userfiles/files/como-conseguir-robux-gratis-2021-sin-hack_GM431946152.pdfIn PDF document text
    • http://rivne.media/ckfinder/userfiles/files/free-flip-master-coins_GM406889139.pdfIn PDF document text
    • http://rivne.media/ckfinder/userfiles/files/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://rivne.media/ckfinder/userfiles/files/coin-master-hack-app-ios_GM406889139.pdfIn PDF document text
    • http://rivne.media/ckfinder/userfiles/files/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • http://rivne.media/ckfinder/userfiles/files/roblox-change-username-for-free-nanoo_GM431946152.pdfIn PDF document text
    • http://rivne.media/ckfinder/userfiles/files/free-coin-master-app_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_off000031f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31F5 22444 bytes
SHA-256: 7a7eef3e20b9fd641f0aeb282940efda73c9c3e4657968b1da71c095dd31bb3b
font_01_sfnt_off000063ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63FF 19320 bytes
SHA-256: 596a923784bfe79cbb538eb6264a58472b034a0b8c68b8708d14b0a77177cb7e

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