Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0a2a25da9995ad7…

MALICIOUS

PDF

42.8 KB Created: 2021-05-12 05:03:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1fec3c06a2c51637db9aba645d66072e SHA-1: 0dabb8a697f194e36a6132d8ce7e8f75c73801df SHA-256: c0a2a25da9995ad7727926ee65467d6ed017dbb093408c00a27b52fc414d7a26
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically promoting 'free Robux' and 'game hacks' to lure victims. The ML classifier also strongly indicated maliciousness. The embedded URLs suggest a phishing or scam campaign aimed at users seeking in-game currency or cheats. No scripts were extracted, but the document's structure and embedded links are indicative of a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/431946152/rblx-city-free-robux-game-hack In PDF document text
    • http://dshikr.ru/images/strucid-aimbot_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://dshikr.ru/images/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://dshikr.ru/images/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/earn-roblox_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/hack-coin-master-app_GM406889139.pdfIn PDF document text
    • http://dshikr.ru/images/coin-master-free-spins-2021-hack_GM406889139.pdfIn PDF document text
    • http://dshikr.ru/images/free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://dshikr.ru/images/universal-minecraft-converter-free_GM479516143.pdfIn PDF document text
    • http://dshikr.ru/images/heroes-online-roblox_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • http://dshikr.ru/images/earn-robux-sites_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/coin-master-hack-ios-app_GM406889139.pdfIn PDF document text
    • http://dshikr.ru/images/worst-client_GM479516143.pdfIn PDF document text
    • http://dshikr.ru/images/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://dshikr.ru/images/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://dshikr.ru/images/coin-master-free-spins-only_GM406889139.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
stream_003_off000049c9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49C9 25492 bytes
SHA-256: 56f5d56685c8cb1f0b6a7e22b779ba4672d1a129062354a5c54d08b45548daa7
font_01_sfnt_off00008451.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8451 18492 bytes
SHA-256: 8c36c54b235ee774b4288e3a660071bec0b4f54d4ae0ca28de0be66b92090129

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