Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bca2ac354569240…

MALICIOUS

PDF

33.7 KB Created: 2021-06-28 23:18:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b244631b144b009e44c03ab1fe17b502 SHA-1: b5524d721b66674e27248b856fb3e72e2fa9ade1 SHA-256: 7bca2ac354569240103eaad18cc2551e3f66716d1d538281d9310437879aa9b9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game currency and hacks to entice users. It contains multiple embedded URLs, including a critical link to a known malicious redirector infrastructure at http://netcdn.co/app/431946152/free-robux-xbox-one-2021-game-hack. The document body and heuristics indicate a social engineering tactic to drive users to potentially malicious sites, likely for credential harvesting or malware delivery.

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/free-robux-xbox-one-2021-game-hack In PDF document text
    • https://razredna-nastava.net/files/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/how-to-get-free-robux-no-inspecting_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-multiplayer-minecraft-server_GM479516143.pdfIn PDF document text
    • https://razredna-nastava.net/files/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://razredna-nastava.net/files/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/coin-master-20-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/how-tto-get-free-robux_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/www-robux-us_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/f-r-e-e-that-spells-free-roblox-id_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
    • http://razredna-nastava.net/files/coin-master-hack-apk-july-29_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-coins-coin-master-blog_GM406889139.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_off00002c72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C72 22424 bytes
SHA-256: a3da37cb07f66f1a2e798bf53bbd1d9d3382606405aa68f46557e66dcd0c4ac5
font_01_sfnt_off00005e28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E28 19116 bytes
SHA-256: c24637a24d35dff3e9a38a449ecba13ce69939e7d4dec6a4c073da71cdc2db45

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