Malicious PDF — malware analysis report

Static analysis result for SHA-256 95a85cdfa99ff3c0…

MALICIOUS

PDF

42.2 KB Created: 2021-05-11 21:37:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6b0fb2c7603262081021b71d8fede95c SHA-1: 278703b436220676b12741d71d2b877c1ae5ceb0 SHA-256: 95a85cdfa99ff3c0dbc4fa59251127fa2fabd1bff52bc8aef945c702e6a02bac
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of 'game hacks' and 'free currency' to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which in turn hosts further malicious PDF documents. The document body and embedded URLs strongly suggest a phishing campaign aimed at users seeking cheats or exploits for popular games.

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/406889139/coin-master-hack-download-2021-game-hack In PDF document text
    • https://cleansui.com.tw/image/data/files/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/free-roblox-clothes-for-your-avatar_GM431946152.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/download-coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/daily-coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/coin-master-daily-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/easy-robux-hack_GM431946152.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/cheats-coin-master-free_GM406889139.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/free-minecraft-education-edition_GM479516143.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/free-roblox-boy-hair_GM431946152.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/coin-master-daily-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/roblox-com-r_GM431946152.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/coin-master-time-hack-ios_GM406889139.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/gold-cards-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/free-robux-generator-no-verification_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
stream_003_off00004972.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4972 24300 bytes
SHA-256: 2f8944028198c8cd4f96340ecfb4cd6fab40fe90a8f90661101c2015275003d0
font_01_sfnt_off00008139.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8139 18696 bytes
SHA-256: 8be69e5611b2f1b9a2f3a77307bfff4bdbd54e1b1e6fe005490b405b0e560c9f

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