Malicious PDF — malware analysis report

Static analysis result for SHA-256 6eb5f1d07a2d0140…

MALICIOUS

PDF

33.1 KB Created: 2021-07-02 00:04:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: ee0c9fdb422ee88102d69364182bed6a SHA-1: 51ffcd89426626d02ebb2355482a82c7f6a9b218 SHA-256: 6eb5f1d07a2d0140e79c28245152e0f83b3eaf086ba0e876ccbedbb291d2bec8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising game hacks and free currency generators. The document body and embedded links suggest a lure for users interested in online games, likely to lead them to a phishing or malware download site. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/anti-speed-hack-roblox-hack-game-hack In PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/hacker-sur-roblox_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/code-for-free-money-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/como-hackear-y-tener-robux_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/list-of-roblox-hackers_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/roblox-free-drawing_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/toolbox-apk_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/coin-master-tool-hack_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-roblox-videos_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-robux-gen-2021_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/anything-free-on-the-catalog-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/roblox-cheats-ios_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-cracked-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/how-to-get-gold-cards-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/roblox-cheat-engine-noclip_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-robux-download-games_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/static-moonactive-net-free-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002a85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A85 22296 bytes
SHA-256: 736b1c75f949c1fefc0675f3ad102ae71acc64fad370f511868b8461294b8df2
font_01_sfnt_off00005c18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C18 19232 bytes
SHA-256: fa3950572ae50bf995deeb10c7a3797ae32a632ab4117289942176c9e9468e32

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