Malicious PDF — malware analysis report

Static analysis result for SHA-256 fef0dcf2194f2489…

MALICIOUS

PDF

34.1 KB Created: 2021-06-19 20:02:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 904faffad329bf8ee8c6b21c03136b47 SHA-1: 3b07e017bc44299d3cac665e9c6dda8c98007b89 SHA-256: fef0dcf2194f2489e5f8058a96b4adf7c088035f2d118e4a56bfa34d4dbb2e0c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs that redirect to malicious infrastructure, specifically advertising 'free generators' and 'game hacks'. The ML classifier strongly flagged this PDF as malicious. The primary lure appears to be a scam related to in-game currency or cheats, designed to trick users into visiting potentially harmful sites.

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.co/app/431946152/robux-cheats-2021-game-hack In PDF document text
    • http://lib.mappifhui.org/repository/minecraft-xbox-one-free_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-hack-fast-org_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/robuxglobalcom-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-hack-roblox-rpg-games_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-close-snippet-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/hack-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/archery-master-3d-apk-and-mod-free-download-unlimited-coins_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-free-clothing-how-to_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-add-cute-clothes-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-clothes-on-roblox-with-bc_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/no-human-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/hacks-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-gamepasses-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/minecraft-java-hacks_GM479516143.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_off00002dbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DBB 22404 bytes
SHA-256: d1475505c6463e7a64edf3da7e5e2701b363f65d6dad8a1e8bd0c6614ab9eed8
font_01_sfnt_off00005fa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FA3 19224 bytes
SHA-256: d35a0ec033c452b17b540afdebc26a7e55f05f1f9ce621d51fe1c3686ba8b531

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