Malicious PDF — malware analysis report

Static analysis result for SHA-256 05a6d0b50792e718…

MALICIOUS

PDF

44.2 KB Created: 2021-05-12 09:41:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 018c153e6b24ad2d10aa378daebbeb1b SHA-1: 09b49af6b715182132011f23213e1f7201c809aa SHA-256: 05a6d0b50792e718cb797d68181f5cfffa5df0052aa00a50c8dc68d95b80e62f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to a known malicious redirector infrastructure. The embedded URL and document body content reinforce this, suggesting the document's purpose is to trick users into visiting a site offering 'free Robux' or 'game hacks'. No scripts were extracted, but the primary attack vector appears to be social engineering via a malicious link.

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 https://netcdn.xyz/app/431946152/roblox-promo-code-to-get-free-robux-game-hack In PDF document text
    • https://www.library.kysm.edu.my/repository/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://library.kysm.edu.my/repository/free-roblox-templates_GM431946152.pdfIn PDF document text
    • https://www.library.kysm.edu.my/repository/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.library.kysm.edu.my/repository/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • https://library.kysm.edu.my/repository/coin-master-hackcom-xyz_GM406889139.pdfIn PDF document text
    • https://www.library.kysm.edu.my/repository/code-free-robux_GM431946152.pdfIn PDF document text
    • https://library.kysm.edu.my/repository/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://www.library.kysm.edu.my/repository/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • https://www.library.kysm.edu.my/repository/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.kysm.edu.my/repository/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • https://library.kysm.edu.my/repository/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • https://library.kysm.edu.my/repository/how-to-get-free-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.kysm.edu.my/repository/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://library.kysm.edu.my/repository/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • https://library.kysm.edu.my/repository/free-spin-coin-master-instagram_GM406889139.pdfIn PDF document text
    • https://www.library.kysm.edu.my/repository/free-robux-group_GM431946152.pdfIn PDF document text
    • https://library.kysm.edu.my/repository/how-to-get-free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.library.kysm.edu.my/repository/coin-master-unlimited-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://library.kysm.edu.my/repository/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • https://library.kysm.edu.my/repository/coin-master-hack-link_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_off00004b9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B9E 26888 bytes
SHA-256: ff02fd79618bc78401adba43de4b5d3896ec1500c7893a169c1ded08ffc19c33
font_01_sfnt_off0000893c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x893C 18780 bytes
SHA-256: 57e6eef1fbc3af66d8c5b48d94799429ebee4b6256a60c8d2844d61f1a05fc0c

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