Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6202df1d1655fb5…

MALICIOUS

PDF

35.3 KB Created: 2021-06-25 14:15:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b241c3e8ef4803eb7975b5425eabcbce SHA-1: 142d4722ba9550937ccd39dc8899e9082e066b76 SHA-256: b6202df1d1655fb5ca3a23e2a40cfcca0bb162cfb2cab150ffde95280291b969
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/visenya-roblox-hack-game-hack PDF link annotation
    • https://xiangquan.com.tw/image/data/files/coin-master-hack-apk-online_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-tiktok-likes-and-views_GM835599320.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-roblox-followers_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-com-hack_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-hack-username_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/make-roblox-shirt-free_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-get-free-coins-and-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-hack-2021-pastebin_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-hack-com_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-free-spins-link-2021-twitter_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/minecraft-pe-017-0-apk-free-download-android_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-free-spins-and-cards_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-generator-no-fake_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-hack-someones-roblox-account-2021_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_off00003072.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3072 23120 bytes
SHA-256: 32f586eb0f04a1d30b71efd1da762cce9ced9e29ebd4eb34ddca00261bed07e4
font_01_sfnt_off000064a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64A2 19088 bytes
SHA-256: 37e200390100a9db46526a569ee813aaba359313bcd7ab06be8517cf88adc323

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