Malicious PDF — malware analysis report

Static analysis result for SHA-256 25b86df3d371b651…

MALICIOUS

PDF

35.1 KB Created: 2021-07-01 10:39:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: dc2145dc28262bb89c908c010e7b8036 SHA-1: 36cd3a6a14a2faee40916f6497f4b0f350fedb87 SHA-256: 25b86df3d371b65119287d8b0f88630f2d305fad24ef6d40cdd60ce74c812418
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The primary lure URL is http://netcdn.co/app/431946152/break-free-roblox-id-area-game-hack, which is part of a chain leading to other malicious PDFs hosted on artistaone.co. This indicates a phishing or social engineering attack aimed at tricking users into downloading further malware.

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/break-free-roblox-id-area-game-hack In PDF document text
    • http://artistaone.co/userfiles/files/roblox-wave-defender-hack_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/minecraft-free-apk-java-edition_GM479516143.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/minecraft-kill-aura_GM479516143.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/hack-server-vip-robux-gratis-sin-cortes_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/how-to-hack-coin-master-game_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/haktutsin-2021-09-coinmaster50freespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/safe-hack-for-coin-master-android_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/best-free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/30-free-robux_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/coin-master-apk-hack-mod-download_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/coin-master-heaven-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/robux-robux_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/pyudry-cheat-roblox_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/cheat-roblox-windows-store_GM431946152.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_off000030c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30C2 22952 bytes
SHA-256: 1dd6a590f796f72e089716812a9655f7aad651a13cdb10af6304156de8a22f66
font_01_sfnt_off0000644e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x644E 18996 bytes
SHA-256: 4ee15c3d88cb9913e16c388997a7d15a2e5b4d240a95bac5b31a2ab83d69db27

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