Malicious PDF — malware analysis report

Static analysis result for SHA-256 588a53d79f6c9796…

MALICIOUS

PDF

35.7 KB Created: 2021-07-05 11:15:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 63765c504de33c0dce5d702c9df09386 SHA-1: 3c337f76a1bf6f7480363f04f48226908fbae3ad SHA-256: 588a53d79f6c97961595fb3617409c153295d77aa564106bbcbe327c073819da
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game currency and hacks to entice users. It contains multiple embedded links, including one to a known malicious redirector at http://netcdn.tw/app/406889139/free-spin-and-win-coin-master-game-hack. The document body and heuristics indicate a social engineering tactic to drive users to potentially malicious websites. No scripts were extracted, but the presence of malicious links and the lure suggest a phishing or scam attempt.

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/406889139/free-spin-and-win-coin-master-game-hack In PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/how-to-get-free-roblox-hair_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/comment-cheat-sur-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/roblox-windows-10-hack-download_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-roblox-money_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-robux-legit-no-survey2021_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/how-to-get-tiktok-followers-for-free_GM835599320.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/working-roblox-hack-ddls_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/roblox-how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/roblox-cheat-engine-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-roblox-account-password-and-username_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-decals-roblox_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/roblox-hack-pc-download_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003483.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3483 22940 bytes
SHA-256: 2a6f20d053290e6b3db4d2aaadefa406489ae52c1fd32b7f6798d08a49873ef4
font_01_sfnt_off0000680c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x680C 18548 bytes
SHA-256: b9db317eaf3db36a6e52b5dfe98c7fc2c97b5ad438dfc0dcb37cbdfbcff15dbf

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