Malicious PDF — malware analysis report

Static analysis result for SHA-256 69a17004b7ecb8ef…

MALICIOUS

PDF

52.8 KB Created: 2021-06-11 13:14:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f53accde2b7e7ccd19ad1326f8e78721 SHA-1: 70111676d91eafdb5bc27a5d627c085dc9dee9ef SHA-256: 69a17004b7ecb8ef0dae339c448f19049ff4f897e1a269c0511bbcbad1f78d62
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free currency' lures. The primary malicious URL identified is https://netcdn.tw/app/431946152/how-to-hack-someones-robux-in-roblox-game-hack. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9844

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.tw/app/431946152/how-to-hack-someones-robux-in-roblox-game-hack In PDF document text
    • http://elib-s2.ubl.ac.id/repository/cheat-engine-codes-roblox_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-tiktok-likes-trial_GM835599320.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-hack-roblox-accounts-2021-on-pc_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/admin-hack-download-roblox_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/robux-card-free-codes_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/dancing-sim-roblox-hack_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-hack-a-roblox-account-using-inspect_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-get-verified-on-tiktok-for-free_GM835599320.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/paint-n-guess-roblox-hack_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-hack-generator_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_004_off00005200.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5200 40700 bytes
SHA-256: 96721098ee777ce2bd70f284dfb368a57a2ceec6a1938c15dd4fc3b7b78b2e67
font_01_sfnt_off0000ab37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB37 18744 bytes
SHA-256: ee8999d896141ee0a3a57a417cde37ca59d6247c272439a01734364f1c4f75dc