Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8500e27bcfc5524…

MALICIOUS

PDF

34.5 KB Created: 2021-06-27 04:12:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e8679ec1bf48ca3ed199149cd3296e51 SHA-1: 69d64a09136355592811ac25e69d98bdf732903c SHA-256: f8500e27bcfc5524d60df0b94b93d2df33dcbc9b6f6d45fb246db782c9991f41
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a redirector URL, which is associated with malicious activity and lures users with game hack content. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the embedded URLs and the nature of the lure suggest a phishing or scam attempt, likely delivered as a spearphishing attachment.

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/free-green-dawing-roblox-game-hack In PDF document text
    • http://library.apsidoarjo.ac.id/repository/bad-minecraft-free_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/cmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/cheat-for-roblox-anime-fight-simulator_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-stuff-in-roblox-right-now_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-codes-to-get-free-stuff-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-giveaway-2_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-many-warning-for-cheating-do-you-get-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-put-cheat-codes-roblox-bubble-gum_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/redboy-roblox-hack-easy-downlaod_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-minecraft-java-code_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-links-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-adopt-me-money-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/moonactive-free-spins-link_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-daily-free-spin-and-coin_GM406889139.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_off000030a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30A3 22068 bytes
SHA-256: 7845be0b773c22d672ed8d002b0314596fbcca87f1a957e022b80d7828765c53
font_01_sfnt_off00006198.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6198 19100 bytes
SHA-256: b16cdb4aa03e258b4a95b9cf955225a14791c9ced9578ea2a290262f6f0c2e99

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