Malicious PDF — malware analysis report

Static analysis result for SHA-256 79ece1602f3bb1a7…

MALICIOUS

PDF

44.0 KB Created: 2021-04-30 18:17:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a189522ef8b4211d7c75b7ad553fddec SHA-1: 94142ad51060aa410aae2a25fae030a9ed541926 SHA-256: 79ece1602f3bb1a702395c96f1c7eb35d20ea180cd58a1a20a71b131de8520fd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites offering game hacks and free in-game currency, a common lure for phishing or malware distribution. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_GAME_HACK_REDIRECT_LURE strongly indicate malicious intent. While no scripts were explicitly extracted, the document body and embedded URLs suggest a workflow designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

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 https://netcdn.xyz/app/431946152/norwegian-resort-music-roblox-hack-game-hack In PDF document text
    • https://lib-stie.yai.ac.id/repository/hack-robux-redboy.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-free-robux-by-inspecting-element.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-free-radio-on-roblox-mm2.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-instant-roblox-premium.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/hacker-avatar-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-robux-admin-hack.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/yt-roblox-hacks-admin-commands.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/synapse-roblox-free-download-2021.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-account-generator.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-hack-for-4-500-robux-inspection-code.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
stream_003_off00003f64.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3F64 31540 bytes
SHA-256: 04c5c71b3c234f03ea3a9924732d3b28a62cca7465c3a35df79bddc7d8b55ad2
font_01_sfnt_off00008778.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8778 19196 bytes
SHA-256: 2de141dd69a4cf1f148a3217cee7bf3bec160dad09f47f154dbb166113440db3

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