Malicious PDF — malware analysis report

Static analysis result for SHA-256 339918748d203eee…

MALICIOUS

PDF

34.1 KB Created: 2021-07-04 00:49:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 67efa7bc9c827c0805f886b19f60e06f SHA-1: f2787d1e5824aa7ace9f3be31bebbaaac2f3ea26 SHA-256: 339918748d203eee69fea1fe95ba1cc19fd2053389033d465fa22755da30928e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, with a primary focus on 'game hacks' and 'free currency' lures. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates a malicious intent to redirect users to potentially harmful content. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or social engineering attack aimed at tricking users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/how-to-hack-roblox-accounts-2021-game-hack PDF link annotation
    • http://opac.acehresearch.org/repository/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/pokemon-go-free-online-play_GM1094591345.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/free-robux-net_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/roblox-microsoft-rewards_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/coin-master-online-free-spin_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/how-to-get-free-robux-december-2021_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/free-gold-cards-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/minecraft-app-store-free_GM479516143.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/free-coins_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/free-minecraft-skins-ps4_GM479516143.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/roblox-free-items-2021_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/coin-master-hack-online-link_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/roblox-hair-for-free_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ee6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EE6 21788 bytes
SHA-256: 1b871e85a8d75ed0550e87644e5dce9c8aadfd35d415826d082741a888c6265b
font_01_sfnt_off00005ecd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ECD 19468 bytes
SHA-256: c059e5ce0b13cf3e98c6bfdb87126f354e1dae45520eeb333857e6d2b791b0b8

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