Malicious PDF — malware analysis report

Static analysis result for SHA-256 59497b6c1e12cdfc…

MALICIOUS

PDF

33.2 KB Created: 2021-07-20 12:09:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 438623b32a57e55bad51010cfa32d4a1 SHA-1: b48a0fa12c2f6b65cb57633d973ac9bc78306234 SHA-256: 59497b6c1e12cdfccc354e87745f22d071583d72b24d2bda45a792e858858a14
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to 'Minecraft Java Edition Free Trial' to trick users into clicking a link. The link, http://netcdn.tw/app/479516143/minecraft-java-edition-free-trial-game-hack, redirects to known malicious infrastructure, indicating a phishing or malware distribution attempt. The presence of multiple PDF-specific heuristics and embedded URLs strongly supports this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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/479516143/minecraft-java-edition-free-trial-game-hack In PDF document text
    • https://sponajaib.com/ckfinder/userfiles/files/tiktok-for-free_GM835599320.pdfIn PDF document text
    • https://sponajaib.com/ckfinder/userfiles/files/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://sponajaib.com/ckfinder/userfiles/files/minecraft-realms-free_GM479516143.pdfIn PDF document text
    • https://sponajaib.com/ckfinder/userfiles/files/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://sponajaib.com/ckfinder/userfiles/files/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://sponajaib.com/ckfinder/userfiles/files/free-tiktok-followers-no-human-verification-or-survey_GM835599320.pdfIn PDF document text
    • https://sponajaib.com/ckfinder/userfiles/files/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • https://sponajaib.com/ckfinder/userfiles/files/minecraft-font-free_GM479516143.pdfIn PDF document text
    • https://sponajaib.com/ckfinder/userfiles/files/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdfIn PDF document text
    • https://sponajaib.com/ckfinder/userfiles/files/coin-master-free-cards_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_off00002d09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D09 22772 bytes
SHA-256: fe88b7e8afba4a399e3163a34a7470e8de4b83e2fa6d0df5e75047f6c6c3a8e5
font_01_sfnt_off00006011.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6011 18240 bytes
SHA-256: 1be29b22a500e2a60a7236cc7f3818504a778037c129f908a3826a58d12b939a

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