Malicious PDF — malware analysis report

Static analysis result for SHA-256 1af152c2ec76b151…

MALICIOUS

PDF

34.9 KB Created: 2021-06-29 21:56:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5dbaeb08d31199ae13ab9239b6b97eec SHA-1: b8eb7cbabbc92920efd7df219c79245e09a97a0a SHA-256: 1af152c2ec76b15163ce48c3bb156dc1a9d017d40ab271213e6e2e1e2b2b8639
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The ML classifier also flagged this document with high confidence. The embedded URLs are designed to trick users into downloading potentially malicious content or visiting scam websites. No scripts were extracted, but the document's structure and embedded links strongly suggest a phishing or scam attempt.

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/goo-gl-wx0ofq-free-robux-game-hack In PDF document text
    • http://library.fk.upnvj.ac.id/repository/dragon-ball-advanced-battle-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-mster-free_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-roblox-hoods_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/rbxfree-com-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-streets-hack_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/minecraft-116-free_GM479516143.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/tiny-tanks-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/cheez-it-cursor-roblox-download-for-free_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/restaurant-tycoon-2-for-free-today-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/actual-free-robux-noothing-reques_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/apocalypse-rising-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-hack-a-pin-code-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-mobile-24-robux_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_off00002fe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE2 22628 bytes
SHA-256: 8df8d09c451f487fc95bb704dbca67712abb298df3b7bfc87540fceb21882a71
font_01_sfnt_off000062a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A2 19332 bytes
SHA-256: cfd8d7847d4af95057f786077e905d944ca6a24c9c63e5ab8205a5a2cd33e8c8

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