Malicious PDF — malware analysis report

Static analysis result for SHA-256 88d2dd0b4d5b2e6a…

MALICIOUS

PDF

32.2 KB Created: 2021-06-27 18:09:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7c36fc1e0768a9d598ab155a1d1e0b2e SHA-1: c8c50a14e9c35948b4d50af55ac3baaed7b6fdcf SHA-256: 88d2dd0b4d5b2e6a5e158b6c6bebf950d4e00dc2be9ba9c54e86298fdda7c141
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting 'game hacks' and generators for popular online games. The document body explicitly contains the URL 'http://netcdn.co/app/431946152/rob-hacker-roblox-game-hack' and a call to action to access a 'ROBUX GENERATOR'. This indicates a phishing or scam attempt designed to lure users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/rob-hacker-roblox-game-hack In PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/free-robux-no-survey-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-rewards_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/earn-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/boku-no-roblox-stats-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/how-to-get-free-robux-in-1-second_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/roblox-html-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-332-apk-free-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/roblox-cheats-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/free-bedrock-minecraft_GM479516143.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/static-moonactive-net-rewards_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/robux-cheats-com_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/roblox-dance-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/coinmaster-twitter_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/roblox-r45-rig-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/free-likes-and-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/roblox-weird_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_off000029e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29E7 21820 bytes
SHA-256: f2d1e625b82ec7c0422fe4f9e5f8fd310a825615b3d19821744c421b3dddc9a6
font_01_sfnt_off00005a22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A22 18656 bytes
SHA-256: 3fed213176cb6af479b9f0577efd49cdcc40cafeab05293dc17fb60655dd6885

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