Malicious PDF — malware analysis report

Static analysis result for SHA-256 41982a534f60817c…

MALICIOUS

PDF

35.1 KB Created: 2021-07-08 00:11:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2e6ca63e2dae78535b6b92ba0922e85e SHA-1: 35640c60222e8bfe70a43f34b026d226542e8a11 SHA-256: 41982a534f60817c76a5c06721dd900b5902fcc4e26e6e6e68f8ca76101d6c30
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector infrastructure, specifically advertising 'free generators' and 'game hacks' for popular games. The primary lure URL is http://netcdn.tw/app/835599320/how-to-get-free-tiktok-coins-game-hack, which is flagged as a malicious redirector. The document's content and embedded links strongly suggest a social engineering tactic to trick users into downloading further malware or visiting malicious sites.

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.tw/app/835599320/how-to-get-free-tiktok-coins-game-hack In PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/are-free-roblox-exploit-safe_GM431946152.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/coin-master-cheat-apk-free-download_GM406889139.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/free-spin-appscoin-master_GM406889139.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/free-minecraft-realms-to-join_GM479516143.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/how-to-get-free-things-on-roblox_GM431946152.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/how-to-get-free-coins-on-flip-master_GM406889139.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/roblox-set-hack-com_GM431946152.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/spend-free-robux-cheat-engine_GM431946152.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/roblox-cheat-website_GM431946152.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/pubg-uc-ykleme-bedava_GM1330123889.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/do-coin-master-hacks-work_GM406889139.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/hack-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/how-to-get-free-robux-for-computer_GM431946152.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/noclip-hack-download-roblox_GM431946152.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/free-coin-link-coin-master_GM406889139.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_off000033d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33D2 22908 bytes
SHA-256: 7555a7c69e300e6e4dd2e9f2a9b5b16a4f08095dcc2e2058e4212ed7308a458d
font_01_sfnt_off00006729.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6729 18136 bytes
SHA-256: e7e699ab2ab74a24219939694e235025144b683f36575dbe0032ba5781d10570

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