Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fd4132530e5bfcf…

MALICIOUS

PDF

35.1 KB Created: 2021-06-29 00:11:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5ac0681be0de44d62fa3707d4ba215c4 SHA-1: 76a70df4af03208a277c1094558e59e1fb4a3c77 SHA-256: 5fd4132530e5bfcf9a9c4ee6331c2fa746a3966deb6832a87aead33084e9e477
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising game hacks and free currency generators. The primary lure appears to be related to Roblox and Coin Master. The embedded URLs are designed to trick users into visiting potentially harmful sites, likely leading to further malware downloads or credential harvesting.

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/roblox-cheat-dungeon-quest-game-hack In PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-robux-no-human-verification-2021-trackid-sp006_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/buy-tiktok-followers-free_GM835599320.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-to-get-free-robux-without-hacking-2021_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-to-get-rs-in-roblox-free_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/hacks-on-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-30-days-old-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-noclip-download-roblox_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/play-roblox-online-for-free-no-download_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/tiktok-for-free_GM835599320.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/daily-free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/btools-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/descargar-roblox-hack-adopt-me-para-pc_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/roblox-place-rewards_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-robux-net_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/talk-other-player-roblox-gui-hack_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-to-earn-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/pubg-uc-recharge_GM1330123889.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_off0000312d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x312D 22456 bytes
SHA-256: 2fcaee2e6f53f3f9640d3385c1d99b6ce5329d83b3ec459973bb07bd7299d6df
font_01_sfnt_off0000639e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x639E 19224 bytes
SHA-256: 6581feb5405296a0ba78ec31e0014bd64383359aaed59d723557dc4ea493798a

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