Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7d8f2d3c27014bf…

MALICIOUS

PDF

35.2 KB Created: 2021-06-29 19:59:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8c4fd63ea0e033650da7cb4e947d97c0 SHA-1: 4d5191ae97dfd44d6aa442740d3512adf584b4fd SHA-256: b7d8f2d3c27014bf2d3c6c7ccbb4b81af5236207b12b98d1cafbb06a057f1366
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to free in-game currency and hacks, specifically mentioning Roblox and Coin Master. It contains embedded links that redirect to malicious infrastructure, as indicated by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The primary link, http://netcdn.co/app/431946152/roblox-number-for-free-robux-game-hack, is identified as a malicious redirector. The document's purpose is to trick users into visiting these malicious sites, likely to download further malware or engage in scams.

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/roblox-number-for-free-robux-game-hack In PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/lazyblocks-com-robux_GM431946152.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/free-bobux_GM431946152.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/coin-master-freebies_GM406889139.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/how-to-get-free-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/free-robux-no-prank_GM431946152.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/how-to-download-a-swearfree-roblox-speech-plugin_GM431946152.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/how-do-i-get-robux_GM431946152.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/free-minecraft-capes-no-mods_GM479516143.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/buy-robux-free_GM431946152.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/coding-script-for-free-robux_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_off00003180.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3180 22836 bytes
SHA-256: acb05f855a675c7271c5a4fec52c1d49201947204dca2dc246d7c1a38b02b6be
font_01_sfnt_off000064a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64A4 19052 bytes
SHA-256: 14837b3d232cad4c0d2d1188e5f6ac918a894da6276050ac074c7580d9c8c928

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