Malicious PDF — malware analysis report

Static analysis result for SHA-256 128eb4cc567f1574…

MALICIOUS

PDF

45.5 KB Created: 2021-06-03 13:15:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0780c07ce61841447be7ba27921b74f1 SHA-1: 6dc3e28f34418965371f50772a63089d1bc508cb SHA-256: 128eb4cc567f1574005f528092e19be650bc90aaa54ec87599087d5c94e49ece
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and free in-game currency, directing users to external URLs. The presence of embedded links and the 'game hack redirector' heuristic strongly suggest a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded links indicate a potential for further malicious actions, such as downloading additional payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 https://netcdn.online/app/406889139/how-to-get-free-spins-on-coin-master-without-waiting-game-hack PDF link annotation
    • http://lib3tell.stptrisakti.net//repository/pokemon-go-free-8-km-egg_GM1094591345.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/coin-master-mod-apk-free-download-for-android_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/minecraft-sign-up-free_GM479516143.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/minecraft_GM479516143.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/real-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/coin-master-jackpot-hack_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/rbx-claim_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/are-there-any-coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/apk-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/2021-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/make-your-own-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/roblox-adopt-me-free-pets_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/coin-master-daily-spin-link-app_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/hack-coin-master-iphone_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
stream_004_off00005198.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5198 25932 bytes
SHA-256: 53af38f9fcf9156eb125f4aaab429b9f8108c61b2b6f02d67e39d4687d4830cf
font_01_sfnt_off00008def.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DEF 18844 bytes
SHA-256: 74e90038a15acf9d59ef996dfbbccefa77ce85bd889c53575e7537e702976194

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