Malicious PDF — malware analysis report

Static analysis result for SHA-256 73d5bc776268e11d…

MALICIOUS

PDF

34.3 KB Created: 2021-06-19 13:47:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bd3f5a11ac8db582eab64a79b0f62337 SHA-1: d2f1969412d9cbe0f48c082c64e6e5c4e651e830 SHA-256: 73d5bc776268e11dd51c6e1d8382ececc94898bc302c84c8ba875b5cbd22929d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The primary lure is 'Vehicule Simulator Roblox Hack', which points to a known malicious redirector. This indicates a social engineering tactic to trick users into visiting potentially harmful sites, likely for further malware delivery or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.co/app/431946152/vehicule-simulator-roblox-hack-game-hack In PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/coin-master-hack-reddit_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/play-robloxcom-free_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/daily-free-coin-and-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/app-for-pubg-uc_GM1330123889.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/hack-pokemon-go-free_GM1094591345.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/robux-website_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/hacked-server-roblox-id_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/pokemon-go-free-app_GM1094591345.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/minecraft-xbox-free_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/roblox-games-with-free-radio_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/airport-in-roblox-free-download_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-coin-master-links_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_off00002d91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D91 22488 bytes
SHA-256: 22d3eb1ad7950140e18e27508c5062303350b44e4d160670995562fb52455b06
font_01_sfnt_off00005f80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F80 19580 bytes
SHA-256: d294f8434486d37d6b71d46c3b36cab5f1741fb2301e9db96c6519f779a5bf7b

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