Malicious PDF — malware analysis report

Static analysis result for SHA-256 b95e86101434f797…

MALICIOUS

PDF

42.8 KB Created: 2021-05-12 05:30:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 0dff3199bee8a548b4572539073efc85 SHA-1: ab82cba209fea9b761c26714ed1c55cb308020e8 SHA-256: b95e86101434f79738ef5bdffda04831a51685ce9114e70e86722334dc40cd18
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link to a 'game hack' generator, identified by heuristics as a lure for malicious activity. The document body and embedded URLs reinforce this by referencing game hacks and free currency. While no scripts were directly extracted, the nature of the lure suggests it is intended to redirect users to a site that may host further malicious content or attempt to exploit vulnerabilities.

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/how-to-win-attack-madness-in-coin-master-hack-game-hack PDF link annotation
    • https://xiangquan.com.tw/image/data/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-hack-download-ios_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/hack-coin-master-link_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-apk-free-download_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-hack-extension_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/code-free-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/hack-de-coin-master_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-haktuts_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/minecraft-server-free-trial_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-hair-for-free_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-game-2021-free-spin-link_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-free-spin-daily-link_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
stream_003_off00004ae5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AE5 25360 bytes
SHA-256: 80983d27cb15e9b5f611ba53a147830e742f80005816e210381cbfa22d5e3eae
font_01_sfnt_off000084d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84D8 18252 bytes
SHA-256: ebc75091247f42f4d8f6f5328204ee4b219dff7698097371fec03a0e52319ffd

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