Malicious PDF — malware analysis report

Static analysis result for SHA-256 b685574270c773c4…

MALICIOUS

PDF

33.0 KB Created: 2021-06-19 02:07:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2713afbda238816fb1ef3bc7d1ca2170 SHA-1: b7b5375e744280d4f4e58319f2ffad7b2362f2e8 SHA-256: b685574270c773c4fcfab990fa2e07db07d306fbb1bff1333112cadb6c344e41
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The primary link, http://netcdn.co/app/431946152/free-robux-codes-generator-no-survey-game-hack, is identified as a malicious redirector. This suggests the document's purpose is to trick users into visiting potentially harmful websites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/free-robux-codes-generator-no-survey-game-hack In PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/coin-master-mod-version-free-download-v344_GM406889139.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/coin-master-download-hack-ios_GM406889139.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/free-coin-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-and-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/free-robux-hack-com_GM431946152.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/minecraft-font-free_GM479516143.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/coin-master-hack-pro_GM406889139.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/roblox-exploit-download_GM431946152.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/roblox-redeem-codes-for-free_GM431946152.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/how-to-hack-roblox-games-mobile_GM431946152.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/minecraft-hacks-wurst_GM479516143.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_off00002b94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B94 21720 bytes
SHA-256: 045d28296fcaa1496f5835f478c457a2c117c1da1aa93fc502413990b7eb18dc
font_01_sfnt_off00005b59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B59 19288 bytes
SHA-256: 6163c90cc3f87fa112b29a72078912088a0d29d6bbd576b2a0c6098c676bd87e

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