Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6935a4286a65855…

MALICIOUS

PDF

34.6 KB Created: 2021-06-20 00:25:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: af9c2cf64f297f771592faba1297ccf4 SHA-1: 568fdaedbc633d9d78e2a6a0c6f0945b92215c30 SHA-256: a6935a4286a65855340a6d860960df83fa09dbb4d20b5821000977afd33d2698
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that lead to a known malicious redirector, disguised as a generator for game currency or hacks. The document body and heuristics confirm the lure is related to free Robux and game hacks. The primary malicious URL identified is http://netcdn.co/app/431946152/robux-free-robux-codes-game-hack, which is likely used to deliver a secondary payload or redirect to 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.co/app/431946152/robux-free-robux-codes-game-hack In PDF document text
    • http://lib.untad.ac.id//repository/pokemon-go-free-accounts-2021_GM1094591345.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-generator_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/best-way-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/hacks-minecraft_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/mcpe-master-free-coins_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-using-cheat-engine_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-make-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-robux-hack-tool-generator-lev-les_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-tycoon-free_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-hack-download-ios_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-comcom_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/how-many-levels-are-there-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/robux-hacks-2021_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_off00002fc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC6 22780 bytes
SHA-256: 6af14d0c15c992ab8a58b6c7e839bfac439a3fafdf55e14ca80f309a26eff658
font_01_sfnt_off000062d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D5 18888 bytes
SHA-256: 71781238e328fe059e81230d28a94dd117b03d2be420da2ab586b0b4490a4f5f

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