Malicious PDF — malware analysis report

Static analysis result for SHA-256 258883d26e006d07…

MALICIOUS

PDF

34.3 KB Created: 2021-06-28 20:39:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: da4a479877c5a8d060f36596a9b93b6e SHA-1: 2987c93ac189319736ed8bd5a8620b8688f9de0f SHA-256: 258883d26e006d07dee6d1a6b20ce3f207d44b2f642e8e8117ad1819f579e137
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple heuristics indicating it's a malicious redirector, specifically targeting users interested in game hacks and currency. The document body and embedded URLs promote 'free generator / game hack' lures, directing users to the malicious URL http://netcdn.co/app/431946152/roblox-paypal-hack-game-hack. This URL is identified as a known malicious redirector infrastructure.

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-paypal-hack-game-hack In PDF document text
    • http://library.atim.ac.id/repository/roblox-free-robux-obby-game_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-get-bc-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/https-oprewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-get-free-roblox-coins_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-nike-clothes-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-name-for-free-gun_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/best-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-no-human-verifacaition_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/codes-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/fiverr-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-v-bucks-for-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-high-school-cindering-hack_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-hack-free-download-no-survey_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-get-free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/hacks-de-comandos-de-admin-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-generator-2021-no-human-verification-or-survey_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_off00002f15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F15 22268 bytes
SHA-256: 025765f18181e9883ed98bd9c995da411816314e9c3dde8efa750e486a61700a
font_01_sfnt_off000060a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A5 19164 bytes
SHA-256: 806a53d93dffe5a325ae65b3daa47f7bf99bbf5c0b28e6d3a1f349574322bad9