Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f45ef980dd2b378…

MALICIOUS

PDF

34.9 KB Created: 2021-06-27 20:38:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 228263881bf1495de3030d8fa85faf95 SHA-1: e8c5e54dfd45e278a8295ec8fb13ebdfb40ae19e SHA-256: 0f45ef980dd2b37892d3b20b38370781acaf20363b41727105a2cbc60fc693a3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links, specifically targeting users with lures for game hacks and currency. The primary URL identified, http://netcdn.co/app/431946152/roblox-how-to-get-free-robux-in-pc-game-hack, is associated with known malicious redirector infrastructure. The document body, though partially corrupted, contains similar lures and URLs, reinforcing the phishing and redirection intent.

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-how-to-get-free-robux-in-pc-game-hack In PDF document text
    • https://lib.stie-yai.ac.id/repository/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-black-hoodie-roblox_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-apk-no-human-verification_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-gamepasses-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-hack-menu-script_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-get-bc-for-free-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-robux-hack-no-survey-2021_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-hack-at-roblox-wall-hack-cbro_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/pubg-uc-2021_GM1330123889.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/decargar-roblox-hack-scrips_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-roblox-money_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/robux-for-free-glich_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-link_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-glitch_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_off000030ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30EC 22612 bytes
SHA-256: 1da10df727af1af832d4a0cb9bc7059f25aaad84c241f8f2626ff20ee54b73be
font_01_sfnt_off0000631e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x631E 19212 bytes
SHA-256: ac433e8878ce56ddacdb4ca0aac411109128b731b726a85cb87e9c386ec06091

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