Malicious PDF — malware analysis report

Static analysis result for SHA-256 a07f84ce93e7d6c4…

MALICIOUS

PDF

35.2 KB Created: 2021-07-05 17:38:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b63bf3c78c58f131e80d7b4d3945ad14 SHA-1: ff5a004641813666ba3c3f4a9649c17e42774d85 SHA-256: a07f84ce93e7d6c425038e406d0d7f6819eecb2ef99f88a1a945277a5e13014a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure related to 'free Robux' and 'game hacks' to entice users. It contains embedded URLs pointing to a known malicious redirector, which is designed to funnel users towards malicious content or downloads. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent.

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/431946152/free-robux-pins-game-hack In PDF document text
    • https://library.uigm.ac.id/repository/ccv3-roblox-hack-tutorial_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/jaibreak-hack-roblox-script-auto-aresst_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-nopde-engine-cheats_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-key-cards-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/download-roblox-go-through-wall-hack_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/comment-installer-un-cheat-sur-roblox-invincible_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-a-vip-server-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/como-ser-un-hacker-en-roblox-impact-y-sin-virus_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-hammer-tool-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-free-exploit-dex_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/hacke-bubble-gum-simulator-de-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/pokemon-go-free-incense_GM1094591345.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-games-online-like-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-free-robux-on-roblox-meep-city_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-games-download-free-pc_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/super-saiyan-simulator-2-roblox-hack_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_off00003163.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3163 22932 bytes
SHA-256: 08bfd494f46182816b67ff167428e5fde68c0bc4a19705d4d5ca895ece188409
font_01_sfnt_off000064e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64E4 18992 bytes
SHA-256: e2f6e7493aec948a310ee99e045c3bc4058c5863f97c0ca4c5f0464a4f6a53a8

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