Malicious PDF — malware analysis report

Static analysis result for SHA-256 974758dab5184f20…

MALICIOUS

PDF

35.2 KB Created: 2021-07-02 00:40:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1fcc1e8866bd125740732ec5a968432a SHA-1: 2f6e1d0da91881e09525915482afa125b89b67d5 SHA-256: 974758dab5184f204f360f6a6c03cc855a7d8e358ceb4205078490c6a1ced50f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to free game generators and hacks, specifically mentioning Roblox. It contains multiple embedded URLs that redirect to potentially malicious content, including a primary redirector at http://netcdn.co/app/431946152/youtube-how-to-play-roblox-bloxburg-for-free-game-hack. The presence of a visual download button further supports the deceptive nature of the document. While no scripts were extracted, the document's structure and embedded links strongly indicate a phishing or malware distribution attempt.

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/youtube-how-to-play-roblox-bloxburg-for-free-game-hack In PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-codes-2021-march_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-font-free-download_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-roblox-accounts-generator_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/100-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-no-clipping-hacks_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/the-unique-game-give-you-free-robux-no-pass-word_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-hack-any-roblox-account-dec-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-treelands-hack_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/hack-for-roblox-a-bizzare-day_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-get-unlimited-robux-with-cheat-engine_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/is-free-robux-real_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/clothes-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/auto-kill-hack-roblox-assassin_GM431946152.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_off0000313a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x313A 22456 bytes
SHA-256: f0cc5188e8bb35bfce52af16a90e31d089b0e2d41a200d3851a77e1b8ce90e95
font_01_sfnt_off00006311.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6311 19556 bytes
SHA-256: 5006bf9f14efcde0e95a56be5aa27b2423f19908b39769ff54bab674a9aa4d1c

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