Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cb0e5a053392746…

MALICIOUS

PDF

34.9 KB Created: 2021-07-03 12:03:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a9fac578f91bb6b929bba8a2eb15a68d SHA-1: 53e4f05556d68da9204843ee0e8c17375eff8fbf SHA-256: 6cb0e5a05339274609738855259455e32d2b8528498dea7419327443d77292af
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising 'free generators' and 'hacks' for games like Roblox. The primary malicious URL identified is http://netcdn.tw/app/431946152/roblox-unlimited-robux-hack-apk-game-hack. This indicates a social engineering lure designed to trick users into visiting a potentially harmful site, 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.tw/app/431946152/roblox-unlimited-robux-hack-apk-game-hack In PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/moon-active_GM406889139.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/youtube-roblox-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/comment-gagner-des-robux-sans-hack_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/how-to-hack-other-peoples-accounts-on-roblox_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/free-tiktok-like_GM835599320.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/hack-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/free-roblox-games-scripts_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/how-to-get-free-robux-on-roblox-on-computer_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/roblox-game-pass-hack-2021_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/free-promo-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/coin-master-daily-spins_GM406889139.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/best-roblox-games-free_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/roblox-scripting-free-help_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/how-to-get-free-spins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/are-tiktok-free-views-hack_GM835599320.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/coin-mster-free_GM406889139.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/how-to-hack-somone-roblox-unpachable_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/300-free-spins-coin-master_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_off00002fce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FCE 22336 bytes
SHA-256: 89e0a53f027e3a1a7f4b25a5ba3b3e3efc9f2bf3ab990d960a50e69c0ac62436
font_01_sfnt_off00006187.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6187 19632 bytes
SHA-256: efd485c9dcbeb3d80c6e4efc75070c94f8ad969661de88090ce5efd647094b04

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