Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c02fb55dfa22d8b…

MALICIOUS

PDF

36.1 KB Created: 2021-06-28 03:24:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0327df60f8e39c10ce4bf5e0fbf8ff5e SHA-1: 0a2e4c51e118ac0ce1361f2dc5ba1c226e69885d SHA-256: 9c02fb55dfa22d8be9af7b9afa8f6a36c22861b13e4d57ba1e23dc40d67a8089
160 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs that lead to a known malicious redirector, disguised as a 'free generator' or 'game hack'. The document body and heuristics indicate a lure for free in-game currency, specifically Robux, which is a common tactic for phishing or malware distribution. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful 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.co/app/431946152/how-do-you-get-free-robux-on-computer-game-hack In PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/robux-hack_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/roblox-how-to-make-a-game-thumbnail-for-free_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/how-to-get-robux-for-free-editthiscookie_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/best-free-skin-in-roblox_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/roblox-cheat-free-robux_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/granny-roblox-games-for-free_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/roblox-codes-rob-the-bank-hack_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/how-to-hack-your-roblox-password_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-with-console_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/robux-hack-computer-no-app-download-computer_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/free-roblox-estudios_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/free-roblox-accounts-generator_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000034a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34A9 22404 bytes
SHA-256: e8acd95b923ff9586afbee370c55b552fa977605a647eaea160b61bb777b6dfd
font_01_sfnt_off00006635.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6635 19752 bytes
SHA-256: 905d92bc6834a695969c2b36cd6916a89746b3102e0af14e1589193ca6b1132c

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