Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bc9d36c3467f986…

MALICIOUS

PDF

41.1 KB Created: 2021-05-16 12:37:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: bb60be084b18a3c53bc2e119d6ed9b0c SHA-1: df83098dd43b41aa8d31e2fb27d892069367992b SHA-256: 4bc9d36c3467f986fdbd6e4f342e532a120c7e21b7f2ca202dcd58cb531cbd99
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing for linking to a 'free generator / game hack' redirector, specifically pointing to 'https://netcdn.xyz/app/406889139/coin-master-free-box-game-hack'. This indicates a social engineering lure designed to trick users into visiting a potentially malicious site. While no scripts were explicitly extracted, the PDF structure itself facilitates the redirection, aligning with common phishing or scam tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/406889139/coin-master-free-box-game-hack PDF link annotation
    • https://goodtools.tw/upload/files/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/get-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-free-master_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • https://goodtools.tw/upload/files/roblox-images_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/my-roblox-account-was-hacked_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-free-spins-twitter_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-unlimited-spin-and-coin-hack_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-free-spins--spins_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-free-spins-april-2021_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/robloxfun-com-generator_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/minecraft-hacker-skin_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
stream_003_off00004775.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4775 24256 bytes
SHA-256: a5496273904efc75a51233138b1f3d315b2ea68b9aa1e89e74a97d3539d22017
font_01_sfnt_off00007e7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E7F 18136 bytes
SHA-256: 5014548489084bc1526755bbac0a98ccda01ba1b83bc85692c033af51eabd5d8

Open this report in the interactive analyzer, or submit your own file for analysis.