Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2da3e1418f535a2…

MALICIOUS

PDF

45.9 KB Created: 2021-06-03 14:34:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-02
MD5: b32009098f85d1a844d2e3351d388e95 SHA-1: 7d9dfe2f6583693d134a13498299600a4f764416 SHA-256: e2da3e1418f535a2669ab23928a20a2f27fe6ad05755f1f862056842fb1075f4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising 'free generators' and 'game hacks' for popular games. The ML classifier also flagged this PDF as malicious. The embedded URLs are designed to lure users into clicking, likely leading to further malware downloads or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.online/app/406889139/google-play-coin-master-free-spins-game-hack In PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/easy-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/try-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/optifine-pe_GM479516143.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-free-spin-and-coin-link-2021-today_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/get-free-robux_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-hack-spins-game-download_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/minecraft-iphone-free_GM479516143.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-hack-software-download_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/play-coin-master-online-free_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-robux-websites-no-human-verification_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
stream_004_off00004e66.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E66 29872 bytes
SHA-256: b0a116187b0177b3ef105aba03f470d05909c878a934aad5ccb63f0fc4dffe72
font_01_sfnt_off00009030.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9030 18580 bytes
SHA-256: 159b8c9b1a2eefbbab3f5eb8e11562dfe96c3187e7709bb0bd16e4420bc442bb

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