Malicious PDF — malware analysis report

Static analysis result for SHA-256 97345a83e4ea9ac6…

MALICIOUS

PDF

43.0 KB Created: 2021-05-10 23:17:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1b4cdd6b76bc3c012f2f1a5fabc487db SHA-1: ae6f039666368ddfa673f8d20a130fa85bf61573 SHA-256: 97345a83e4ea9ac69d2952201b4c070c23ae8c6fb216212777a5fcf4ca24e2f3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to a malicious domain, disguised as a 'game hack' or 'free generator'. The document body and embedded links suggest a lure to trick users into downloading a malicious payload. The ML classifier strongly flagged this PDF as malicious, and the presence of redirector links further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/431946152/ways-to-earn-robux-game-hack In PDF document text
    • https://repository.umgo.ac.id/repository/real-robux-codes_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/coin-master-34-6-hack_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/good-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/roblox-redeem_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/coin-game_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/daily-free-spins_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/free-group-roblox_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/free-roblox-templates_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/free-robux-just-click_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
stream_003_off00004954.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4954 26572 bytes
SHA-256: 78a8e7542a0934f5ce2a36dea15eed2cb47a0423ebed8f909a10770b01d3e371
font_01_sfnt_off00008508.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8508 18456 bytes
SHA-256: a97dc755a6f2d2ed213355e04e982d1291fa69ee2bd0a77560176eb39858d63d

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