Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb7fb15397a4ce3b…

MALICIOUS

PDF

34.5 KB Created: 2021-07-06 00:07:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 448aada5d71b6b43d558c74d83f9ea2e SHA-1: 0baa4ae56bffa9a44e7ba3ccb9d462146d4218c1 SHA-256: fb7fb15397a4ce3b9c78c2468d525f14789989f62c4980d0da50eedf56621507
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is designed as a lure, presenting itself as a 'free generator / game hack' for popular games like Roblox and TikTok. It contains embedded links that redirect to malicious infrastructure, specifically http://netcdn.tw/app/835599320/tiktok-free-robux-codes-game-hack, which is flagged as a known malicious redirector. The document's primary function is to trick users into visiting these malicious sites, likely to deliver further malware or engage in phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/835599320/tiktok-free-robux-codes-game-hack In PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-piano-the-fat-ratmonody-hack-delay_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/45how-do-you-get-free-builders-club-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/hack-cs-go-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-100-robux_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-hack-roblox-jailbreak-on-ios_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-tiktok-followers-youtube_GM835599320.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-shirt-cheats_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-no-points_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-dead-winter-hack_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/tiktok-free-beer-for-a-year_GM835599320.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-be-a-admin-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-card-redeems_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-free-draw-2-tutorial_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-piano-gui-hack_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-mods-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/what-free-program-for-roblox-shirts_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-get-guns-in-roblox-hack_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
font_00_sfnt_off0000300e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x300E 22696 bytes
SHA-256: 3acaf0ec1f56963936c1df9e73738709d4870ac3a3c4095f91b9f19a20f656fe
font_01_sfnt_off000062c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C3 18652 bytes
SHA-256: 05050119ef5e291a15488da93c7407b81bd8b5ab9f6ca77c7888ca47432a6d2e

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