Malicious PDF — malware analysis report

Static analysis result for SHA-256 37c9676039496eac…

MALICIOUS

PDF

44.2 KB Created: 2021-06-04 03:06:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 07a7509f40ccc29cc69b5841f481c6a9 SHA-1: d075f4146e5fe2e67af965b0935a21184382297c SHA-256: 37c9676039496eac4005d87f4daeb0bc16980cb8ea1d4996f6aa81eb1a9b9096
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, masquerading as free game hacks or currency generators. The primary lure is a link to 'free tiktok followers instantly game hack'. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/835599320/free-tiktok-followers-instantly-game-hack In PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/coin-master-free-gold-cards_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/get-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/if-i-uninstall-minecraft-can-i-reinstall-it-for-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/coin-master-hack-lost-world-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/hack-a-game_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/roblox-download_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_off000050cc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50CC 25016 bytes
SHA-256: 4419bca0f9b1ea68f3e83e03cb8e5391279b1ceb055ea01fdb8386778e2fbd71
font_01_sfnt_off00008a9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A9F 18100 bytes
SHA-256: f27faf11ab9b731ff59c8a2736de67f71ae1dcd874c0843e76df7710bacb1c6d

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