Malicious PDF — malware analysis report

Static analysis result for SHA-256 67caaa2b413a1330…

MALICIOUS

PDF

36.2 KB Created: 2021-07-09 15:01:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: da15fb45761ff0101de75ebbd0e9d265 SHA-1: b0f083f32fd01ff50a19fff09facbc9cc9e24682 SHA-256: 67caaa2b413a1330c6e6856888cc4f1d42733cb64a32a29f38815122c7160ebd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to known malicious redirector infrastructure, specifically targeting users interested in game hacks and free currency. The document body and heuristics indicate a lure for free Robux and game cheats, directing users to download potentially malicious files or visit scam sites. The ML classifier strongly flagged this PDF as malicious.

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/how-do-i-get-free-robux-on-roblox-game-hack In PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/moonactive-free-spins-link_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/can-you-get-free-tiktok-fans_GM835599320.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/how-to-hack-pizzeria-roleplay-remastered-roblox-money_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-promo-codes-july-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/minecraft-pe-free-download-android_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/minecraft-anarchy-server-no-hacks_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/corrupt-roblox-torso-free_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/minecraft-free-exe_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/pubg-uc-unipin_GM1330123889.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/roblox-reaping-simulator-shards-hack_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/roblox-dragon-ball-rage-cheat_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/free-robux-hack-code_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_off000034db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34DB 22848 bytes
SHA-256: 6e7ff6ebd79bdb095b9d5db1e0847b26e842adba0a56cbe5e9a447280fd986f9
font_01_sfnt_off000067ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67CE 19228 bytes
SHA-256: e9643cf535cb35bfe77301aa7fad2e30087b9ada5d7646565701a14096303307

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