Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e84e0c9e0545b07…

MALICIOUS

PDF

45.3 KB Created: 2021-05-11 14:39:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0de134e5b56cd840c223711eed062b8b SHA-1: 86ddf386c389555751d5d18a4f5695493c9c5473 SHA-256: 3e84e0c9e0545b0797fa8bc24f0b57020d2abfdf65e369a468c52cd6aa926c7f
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'free Robux' or game hacks. The ML classifier strongly flagged this PDF as malicious, and the presence of a download button lure reinforces the deceptive nature of the document. The primary attack pattern involves tricking users into clicking these links, likely leading to further malware downloads or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 3

  • 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.xyz/app/431946152/robloxhero.xyz-free-robux-game-hack In PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/roblox-weird_GM431946152.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/free-generator_GM431946152.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/easy-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/coin-master-mod-version-free-download-ios_GM406889139.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/coin-master-hack-2021-app_GM406889139.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.janabadra.ac.id/otomasi/repository/how-to-hack-a-roblox-account-easy_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_003_off00004aef.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AEF 29284 bytes
SHA-256: fdc17f6c7d599c6d82748b921738ef454bba116353aa7e4b235cebffb7915e63
font_01_sfnt_off00008e2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E2F 18584 bytes
SHA-256: d96645d743d7bc7e16305d404e9ae036d13b2ec1544ce4a3e073a2af54c3cd1e

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