Malicious PDF — malware analysis report

Static analysis result for SHA-256 7586a11880616c7f…

MALICIOUS

PDF

44.8 KB Created: 2021-05-19 13:35:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e32ce4e90a8c96750becb03328fafe8c SHA-1: 715ac33819cf04919b5821967c02ab912f37739b SHA-256: 7586a11880616c7fcbf017344df03bb3d585d53ab6e861c39f2e5944b88d63fc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack lure, directing users to a known malicious redirector. The document body and embedded URLs reinforce this by mentioning "free generator / game hack" and linking to suspicious domains. While no scripts were extracted, the presence of malicious redirector links and the lure suggest an attempt to lead the user to a site that likely hosts further malicious content or exploits.

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 https://netcdn.xyz/app/479516143/minecraft-apk-android-free-game-hack In PDF document text
    • https://www.ruchya.com.tw/upload/files/coin-master-daily-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/how-to-get-free-hair-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/robux-free-2021_GM431946152.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/coin-master-hack-online-android_GM406889139.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/ww-robux_GM431946152.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/how-to-change-your-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/hack-roblox-players_GM431946152.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/free-rare-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/minecraft-hacker-mask_GM479516143.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/guide--coin-master-free-tips_GM406889139.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/robux-com-free_GM431946152.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/coin-master-free-coins-today_GM406889139.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/card-hack-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/get-free-robux-today_GM431946152.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/www-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/free-coins-app-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/minecraft-menu_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 2

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_off00004c3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C3D 29104 bytes
SHA-256: d37b75092c9be22d88b2b812afed16480ebea88ab150a4f0cd4be8297cf77c08
font_01_sfnt_off00008d37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D37 18228 bytes
SHA-256: 3180bee3546e15234fed753f25771b93e4d3b2f7dcb5c3070751dc9d02e0c18a

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