Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3554a67c0021e3d…

MALICIOUS

PDF

35.2 KB Created: 2021-06-26 12:28:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 68a3fd789563f2867fdc44f9f32a4f8a SHA-1: 3d9e03f091d5509f098daf2b2a1b1a9ea49c6d8a SHA-256: b3554a67c0021e3d10055f4cad72ab87238f8527475aced43496a8c21a0cb5cf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to malicious redirectors, masquerading as 'game hacks' or 'free generators' to lure users into downloading potentially malicious content. The primary lure URL is http://netcdn.co/app/431946152/roblox-cheat-client-juillet-2021-game-hack, which is part of a known malicious infrastructure. The document body and embedded URLs suggest a social engineering tactic to trick users into downloading unwanted software.

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/roblox-cheat-client-juillet-2021-game-hack In PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-robux-cards-free_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/azon-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-spins-for-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-works-no-surveys-no-human-verification-code_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/www-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-2021-windows-10_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/best-roblox-hacked-clients-2021-youtube_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-prison-life-cheat-codes_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/robuxmatchcon_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-how-to-get-japan-sushi-card-free_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/exploit-hack-download-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-hack-without-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/robux-hack-on-wish_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_off0000304d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x304D 22652 bytes
SHA-256: 256502de4262fa2dfc900a062dd7180f18e6e73de6ed12a806244b2045953373
font_01_sfnt_off0000631f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x631F 19584 bytes
SHA-256: f62ec7219d37be42882e7c151821b0f7c23486d2e79c6e5a3e4f517609f981a4

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