Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd4aed6f06d0671d…

MALICIOUS

PDF

34.9 KB Created: 2021-06-26 03:15:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bd590bb7773333b00e77267e705e30a0 SHA-1: 5263e64c63e02d06d7f202810a5744349283c59e SHA-256: bd4aed6f06d0671def34bea5de86db545cf957a6861658bea2be00ee07b115f8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of 'free Robux' and a download button to entice users to click on a link. The primary link directs to a known malicious redirector infrastructure, indicating a phishing or scam attempt. No scripts were extracted, but the presence of embedded URLs and the lure suggest an attempt to lead the user to a malicious site, likely for credential harvesting or malware delivery.

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/free-robux-giveaway-january-2021-9-game-hack In PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/spin-coin_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/free-back-accessories-roblox_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/coin-master-coins_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/roblox-free-robux-hack-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/tiktok-unicorn-free-download_GM835599320.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/free-robux-cript-tamper-monkey_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/minecraft-java-edition-download-free_GM479516143.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/how-to-get-any-hat-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/minecraft-ore-finder-mod_GM479516143.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/roblox-mouse-fre_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/free-minecraft-packs_GM479516143.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/como-hackear-en-roblox-a-la-gente_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/my-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/coin-master-free-download-app_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/is-roblox-free-on-ps4_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/free-musket-model-roblox_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_off00002f0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F0F 22168 bytes
SHA-256: 150b3391d7bd55a07772249f9b84645eccfbfcbaf1fcf0429e55c274196cd269
font_01_sfnt_off00006055.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6055 20024 bytes
SHA-256: a8ef0e13961a0d11dd8c2ef896720339a3939164fa5b6948c991c3e27eae1d9f

Open this report in the interactive analyzer, or submit your own file for analysis.