Malicious PDF — malware analysis report

Static analysis result for SHA-256 85d927f4633d9033…

MALICIOUS

PDF

35.9 KB Created: 2021-06-27 12:49:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 501b157aa3ed88d5e114f531b8867d54 SHA-1: 7f217278f1cae5f87653499488306d22d7ac5a4d SHA-256: 85d927f4633d903342c0e52937ecfdc13f2b280113491ba3ac0a0d3b78c47e74
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a 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 serves further malicious PDF files. The document's content and embedded links strongly suggest a phishing or scam campaign aimed at users interested in online games.

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/how-to-hack-roblox-heros-of-robloxia-game-hack In PDF document text
    • http://www.shivintech.com/uploaded_files/userfiles/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.shivintech.com/uploaded_files/userfiles/files/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://www.shivintech.com/uploaded_files/userfiles/files/how-to-cheat-on-dragon-ball-rage-roblox_GM431946152.pdfIn PDF document text
    • http://www.shivintech.com/uploaded_files/userfiles/files/injector-hack-robux_GM431946152.pdfIn PDF document text
    • http://www.shivintech.com/uploaded_files/userfiles/files/roblox-com-free_GM431946152.pdfIn PDF document text
    • http://www.shivintech.com/uploaded_files/userfiles/files/roblox-speed-and-jump-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.shivintech.com/uploaded_files/userfiles/files/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://www.shivintech.com/uploaded_files/userfiles/files/coin-master-free-spins-link-iphone_GM406889139.pdfIn PDF document text
    • http://www.shivintech.com/uploaded_files/userfiles/files/roblox-com-hack-password_GM431946152.pdfIn PDF document text
    • http://www.shivintech.com/uploaded_files/userfiles/files/minecraft-gun-mod-download-free_GM479516143.pdfIn PDF document text
    • http://www.shivintech.com/uploaded_files/userfiles/files/free-robux-gift-cards-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.shivintech.com/uploaded_files/userfiles/files/roblox-script-executor-free_GM431946152.pdfIn PDF document text
    • http://www.shivintech.com/uploaded_files/userfiles/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://www.shivintech.com/uploaded_files/userfiles/files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.shivintech.com/uploaded_files/userfiles/files/coin-master-free-spins-daily-1-ga_GM406889139.pdfIn PDF document text
    • http://www.shivintech.com/uploaded_files/userfiles/files/roblox-brocken-bones-4-cheats_GM431946152.pdfIn PDF document text
    • http://www.shivintech.com/uploaded_files/userfiles/files/roblox-island-2-hack_GM431946152.pdfIn PDF document text
    • http://www.shivintech.com/uploaded_files/userfiles/files/script-lua-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.shivintech.com/uploaded_files/userfiles/files/wahoo-gaming-free-robux_GM431946152.pdfIn PDF document text
    • http://www.shivintech.com/uploaded_files/userfiles/files/roblox-premium-free_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_off0000342b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x342B 22880 bytes
SHA-256: 6f7798e68963ad2d745351c688ae06557caa7dc23e4d5e9a4ace271d8e49ff88
font_01_sfnt_off0000679f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x679F 18940 bytes
SHA-256: 9978b3a7f52c8fc0e6d62bae717f85f026da2718a21c3b9c3d45804f0bacff99