Malicious PDF — malware analysis report

Static analysis result for SHA-256 58868e8093cb1c6d…

MALICIOUS

PDF

34.9 KB Created: 2021-07-03 19:55:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8f8db70c32ad4f29106dde7452fb33ea SHA-1: faab1279ec5dbff76fb11ae01fd79ffc9b130ac4 SHA-256: 58868e8093cb1c6d78634aeb816a162deebf5943816e93395196637b1f94612d
160 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 generators' and 'game hacks' for popular games. The ML classifier also flagged this PDF as malicious. The primary IOC is the redirector URL, which is likely used to host or serve further malicious content.

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/479516143/best-free-minecraft-hacked-client-game-hack In PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/roblox-online-free_GM431946152.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-chromebook-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/free-shirt-templates-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/free-group-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/medieval-warfare-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/a-lot-of-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/how-to-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/free-unlimited-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/get-free-spins-on-coin-master-links_GM406889139.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/coin-master-daily-free-coins-link_GM406889139.pdfIn PDF document text
    • https://elearning.man3sumbawa.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-2021-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
font_00_sfnt_off000033f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33F5 22284 bytes
SHA-256: e8379641310cf61ea9ed9db815a2ea0bfead752f8d2a556a0de95a5566e7b7f4
font_01_sfnt_off00006520.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6520 18492 bytes
SHA-256: de6dea86fd6d9d2ae37ee86cd92174b2735422e57a595b8bae0417e8dfd3f9d4

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