Malicious PDF — malware analysis report

Static analysis result for SHA-256 22dc009fe851ace3…

MALICIOUS

PDF

33.8 KB Created: 2021-06-19 10:09:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f40e516a8612144067f6e44c4c70beaa SHA-1: 6b96ca7327f8426f9edd3c0a3d03e8e95b7fb8ec SHA-256: 22dc009fe851ace30a90dd0f1bf24e70b34f08d00d279c7ca66fa0b5c7c006b4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating it links to malicious redirector infrastructure, specifically promoting 'free generator / game hack' lures. The document body and embedded URLs reinforce this by advertising free Robux and game hacks, ultimately pointing to the malicious URL http://netcdn.co/app/431946152/how-to-get-free-robux-no-games-game-hack. This suggests a phishing or scam campaign designed to trick users into visiting malicious sites.

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/how-to-get-free-robux-no-games-game-hack In PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-mod-version-free-download-34-4_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/tiktok-free-recharge-500_GM835599320.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-hacks-on-roblox-booga-booga_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-card-collection-hack_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-robux-roblox-no-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/pokemon-go-free-nickname_GM1094591345.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-minecraft-addons_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-free-300-robux_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/is-minecraft-vr-free_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-free-tiktok-fans_GM835599320.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-robux-codes-on-iphone_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-robux-site-that-works_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-cards-hack-2021_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-free-hoodie-template_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_off00002f5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F5D 21484 bytes
SHA-256: 069fb4ab64b66d3590bd38cda185be5012a5f95f16a5e1f4dd4a79f263589391
font_01_sfnt_off00005e66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E66 19244 bytes
SHA-256: f3c6e234e19e69f73cf4139e623a3cd91b2dfd9e39727552a3cd214ff95efe11

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