Malicious PDF — malware analysis report

Static analysis result for SHA-256 d49e85de51d228b5…

MALICIOUS

PDF

34.7 KB Created: 2021-06-19 17:24:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5d49b27817c81aceb9e5a5c485542685 SHA-1: 93b3dccb3f847c58db49cd1e7529f00d66c84572 SHA-256: d49e85de51d228b5ed7da3fe3d3de3df04b7945ea5d7dcc62738c5216b3f0cbf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a redirector service that ultimately leads to game hack lures, such as 'Roblox Robux Generator Hack No Survey'. The presence of these links and the ML classifier's high confidence score indicate a malicious intent to trick users into visiting potentially harmful sites. No scripts were extracted, but the document's structure and embedded URLs strongly suggest a phishing or social engineering attack.

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-robux-generator-hack-no-survey-game-hack In PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/roblox-bandit-simulator-codes-new-hacker-update_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-hack-spin_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/how-to-hack-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/roblox-game-free-download_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-hack-injection_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-free-robux-automatically_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/easy-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/how-to-get-free-coins-in-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/how-to-get-free-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/roblox-hunger-games-cheats_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/is-minecraft-free_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/tiktok-free-quality_GM835599320.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/roblox-assassin_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_off00002fa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA7 22488 bytes
SHA-256: 5e07d3d6073b40ec677c3f0b3b001c4ca060bf61316ef97422ecb824f2bef6bf
font_01_sfnt_off00006200.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6200 19196 bytes
SHA-256: 3f6cbeda3561ede15d8341f5d0c1393cf120703d9f70dada77bb8d2266979c61

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