Malicious PDF — malware analysis report

Static analysis result for SHA-256 05ba5a818da62b1b…

MALICIOUS

PDF

34.4 KB Created: 2021-07-01 17:11:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a25c56f75490892477bac74130a10ed4 SHA-1: a6b4b244d8be14c9e1d2088bc1bce8e7d15f131b SHA-256: 05ba5a818da62b1ba5f54986128f53767c74e35fedaf3c125e6bb395692f8135
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous URLs and text related to game hacks and free in-game currency, strongly suggesting a social engineering lure. The presence of an external URI pointing to 'netcdn.co' with a filename indicating a 'roblox-2021-hack' further supports this. The ML classifier's high confidence score indicates a strong likelihood of malicious intent, likely to trick users into downloading malware.

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-2021-hack-game-hack In PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/fly-hack-roblox-lumber-tycoon-2-francais_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/khaos-free-robux-pastebin_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/free-serverside-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/aristois-minecraft-hack_GM479516143.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/https-webrobloxcom-catalog-202120215-hacked_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/how-to-get-800-robux-free_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/how-to-get-202100-robux-for-free-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/trucos-para-free-vip-ultimatesurvival-rpg-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/free-robux-youtube_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/free-robux-lice_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/codes-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/get-free-robux-on-ipad-2021_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/roblox-hack-game_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/free-auto-clicker-for-roblox-pc_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

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_off00002eff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EFF 22464 bytes
SHA-256: 5b9487b84909c6e428866575a2e8032848ac615e0683c130138114907119a8e0
font_01_sfnt_off0000610a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x610A 19056 bytes
SHA-256: d12ed7f60ab6f0ee9203b204c43922ef7388aa7296366b2a65af9fb0b247c164

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