Malicious PDF — malware analysis report

Static analysis result for SHA-256 f19d72ca8a2b30d4…

MALICIOUS

PDF

35.4 KB Created: 2021-06-30 02:40:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 00fb4d6cc01ffdb11eb2ad4a99bf05f3 SHA-1: 6649c76ebb01ffa0219416b2e318346fe0a6ebf0 SHA-256: f19d72ca8a2b30d42ce6097528bba10d516f5218086c7f1229110c039de16bc7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free currency. The primary redirector URL is http://netcdn.co/app/431946152/roblox-account-pin-hack-game-hack, which likely serves as a gateway to further malicious content or phishing pages. The document's content and embedded links strongly suggest a social engineering attack aimed at tricking users into visiting compromised or malicious websites.

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-account-pin-hack-game-hack In PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/hack-that-can-bypass-new-roblox-update_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-roblox-clothes-templates_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/minecraft-free_GM479516143.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/official-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/ex7-roblox-free_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/www-robux_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-robux-no-scam-or-survey-or-hack_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/infinite-jump-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/script-executor-roblox-free_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/live-free-robux-codes_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_off000031b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31B3 22872 bytes
SHA-256: 9ae7d515cbd91174855880cc304eb3d97a50aaeb28ae550a169981facad5bd99
font_01_sfnt_off00006529.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6529 19176 bytes
SHA-256: 44954282971fef735174b5963bc6083ad24fcbe8338d6456d74b88f54aded2a8

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