Malicious PDF — malware analysis report

Static analysis result for SHA-256 3282fe755259f94c…

MALICIOUS

PDF

34.8 KB Created: 2021-06-20 06:53:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 9b23e98131178fd598a5e1cab2d38011 SHA-1: 0131b6437a5ac3e82758e5154e910ab91636b311 SHA-256: 3282fe755259f94ca3dbcb405443ad2d3ce4f735f6e024f026c5ec0321f62d14
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free currency to trick users into clicking malicious links. The primary link, http://netcdn.co/app/431946152/roblox-hacks-project-alpha-game-hack, is identified as a known malicious redirector. While no scripts were extracted, the document's structure and embedded URLs strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites.

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/roblox-hacks-project-alpha-game-hack In PDF document text
    • https://yowchang.com/image/data/files/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/roblox-noclip-hack_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/roblox-survey-for-robux_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/coin-master-free-download-for-pc_GM406889139.pdfIn PDF document text
    • https://yowchang.com/image/data/files/hack-xp-net-generators-coin-master_GM406889139.pdfIn PDF document text
    • https://yowchang.com/image/data/files/dungeon-quest-free-account-roblox_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
    • https://yowchang.com/image/data/files/minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • https://yowchang.com/image/data/files/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • https://yowchang.com/image/data/files/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • https://yowchang.com/image/data/files/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/how-to-get-a-free-radio-on-roblox_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/coin-free-spin_GM406889139.pdfIn PDF document text
    • https://yowchang.com/image/data/files/coin-master-game-free-play-online_GM406889139.pdfIn PDF document text
    • https://yowchang.com/image/data/files/free-minecraft-generator_GM479516143.pdfIn PDF document text
    • https://yowchang.com/image/data/files/appsmob-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://yowchang.com/image/data/files/roblox-avatar-tester_GM431946152.pdfIn PDF document text
    • https://yowchang.com/image/data/files/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.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_off00002f2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F2E 22600 bytes
SHA-256: 3a940f81e2c865e3344246c38f68d4248d0aab0cf105069e3a6e718d6f58834f
font_01_sfnt_off00006196.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6196 19444 bytes
SHA-256: ae34353d1331427adc4437b209e68a379e52597f3e7b6518d2fd228949012c08