Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e74d25afeac484e…

MALICIOUS

PDF

34.2 KB Created: 2021-07-03 18:20:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1f59ca365dd596169075555ec86f6a6b SHA-1: 2974ef83ded3ea62d54fa194df020508c03cdb8d SHA-256: 1e74d25afeac484eb11affe1c4faa18d80e6f1905dd5eb348e2af5c44434e7b2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains embedded links that redirect to known malicious infrastructure, specifically promoting a 'Roblox Robux Hack Tool Generator'. This lure is designed to trick users into visiting a potentially harmful site, likely for credential harvesting or further malware delivery. The ML classifier strongly indicates maliciousness, and the presence of multiple redirector links reinforces this assessment.

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.tw/app/431946152/roblox-robux-hack-tool-generator-lev-les-game-hack In PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/roblox-pro-hack_GM431946152.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/free-robux-hack-100-works-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/how-to-get-free-face-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/roblox-password-hacker-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/give-me-free-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/robux-hacks-admin-commands_GM431946152.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/roblox-gift-card-free-no-human-very-or-survey-youtube_GM431946152.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/robux-hack-may-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/descargar-un-hacks-para-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/roblox-free-dominus-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/hacks-for-booga-booga-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/free-makeup-base-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/25-000-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/free-avatar-games-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/minecraft-free-android_GM479516143.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/hack-to-get-1-billion-robux-in-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/roblox-cheat-codes-for-vehicle-simulator_GM431946152.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/free-robux-limited-time-game_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
stream_002_off0000306b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x306B 21900 bytes
SHA-256: 351bdb34f9a28401ef4cde7e3c4de91ed9b9b80c641d046b3eecd0865d92f646
font_01_sfnt_off000060a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A1 19012 bytes
SHA-256: 32b7dfd9548d81d56fe44971ed0291af7b58afcca98e7e451afa3254f5baf28b

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