Malicious PDF — malware analysis report

Static analysis result for SHA-256 740b696c870a3679…

MALICIOUS

PDF

33.9 KB Created: 2021-07-05 22:14:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b85ee9973740eeee2715f139ec85982a SHA-1: ed9f0a9d0ffd66d27ea36807a4cd93043242c87c SHA-256: 740b696c870a3679d6467be98c44673a4b3322e81e099a2a89a04f836f4b8133
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/bloxland-earn-free-robux-game-hack PDF link annotation
    • http://lib.vipklh.ru/repository/a-wolf-or-other-roblox-otter-space-cheats_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-jailbreak-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-marketplace-for-free_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-alcutally-works_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-free-dowlod_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/yt-comment-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-get-free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-com-free-robux-obby_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/obc-free-roblox-account_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/25-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-f-88-gun-free_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/earn-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-free-gui-op_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-murder-mystery-2-halloween-hack-candy_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-exectuer-roblox_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-make-a-modded-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-jailbreak-free-exploit_GM431946152.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_off00002e02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E02 22436 bytes
SHA-256: 2c2e4b858333bf1fccd48dc0ffde659f0ded172c1a884075f9df94080825ebdf
font_01_sfnt_off00005fb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB3 18964 bytes
SHA-256: e1def2a9526019231b9d88ec7edfc28da13730703cf387a4434b27a982203b29

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