Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfe7e3d1c3e1d6bb…

MALICIOUS

PDF

45.0 KB Created: 2021-06-09 12:44:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6b3a75e7f5dee61c6eb0344a533049b7 SHA-1: 25c8fa25e6e29ed395b82e9521e9a80924f0eafd SHA-256: dfe7e3d1c3e1d6bb84c7e6131aa730947ba25ed8d6fbd14e2aaa59cae8463bba
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure related to free game items, directing users to a malicious URL. This URL is identified as a malicious redirector, likely serving as a gateway to further malicious content or malware. The presence of embedded URLs and the ML classifier strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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-get-adidas-shoes-for-free-in-roblox-game-hack In PDF document text
    • http://library.itekes-bali.ac.id/repository/google-roblox-games_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/eclipse-roblox-hack-injection-failed_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/spin-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-32-mod-hack-unlimited_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/minecraft-bedrock-edition-pc-free_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-roblox-girls-clothes_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/www-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-makeu-base-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-coin-and-spin-in-coin-master_GM406889139.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_off00004fe3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FE3 25616 bytes
SHA-256: 8b1b03b8d63ab792dc28fbf15cf73328ed0b78983449c27bb629d95781bdb3cb
font_01_sfnt_off00008b9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B9E 18904 bytes
SHA-256: 900d8f262ee8ea898adb900b2dda4706f0f8ab6b1bb14e722950177be67ec989

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