Malicious PDF — malware analysis report

Static analysis result for SHA-256 84b1aa6a8df83646…

MALICIOUS

PDF

34.0 KB Created: 2021-07-08 11:46:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 05435019ce3b036df6b7c919f3e28643 SHA-1: 916f057aea1b77066349257063001cbed10cd0c5 SHA-256: 84b1aa6a8df836465c547acbbbe5539de1c68de2c14549fdfd3198097bc28b90
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a lure for game hacks, specifically linking to 'minecraft-hacks-wurst-game-hack' via the URL http://netcdn.tw/app/479516143/minecraft-hacks-wurst-game-hack. This URL is flagged as a high-risk redirector, indicating a likely attempt to deliver malware or lead users to a phishing site. The ML classifier also strongly flagged this PDF as malicious.

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.tw/app/479516143/minecraft-hacks-wurst-game-hack PDF link annotation
    • https://smark.com.tw/image/data/files/roblox-hacked-accounts-list_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/coin-master-free-coins-link-2021-deutsch_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/coin-master-free-spins-fb_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/free-robux-codes-not-used-2021_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/how-to-get-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/free-robux-generator-no-download-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/hack-polyguns-roblox_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/free-and-safe-robux_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/free-games-like-roblox_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/coin-master-hack-link-2021_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/how-to-get-free-rocket-fuel-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/how-to-hack-assassin-roblox-2021_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/coin-master-daily-gifts_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_off00003023.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3023 22440 bytes
SHA-256: 463f54141899ea0f9c1b8c0ad080f6d5301152b5489d4ab718d0d14f00ba200d
font_01_sfnt_off00006220.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6220 18364 bytes
SHA-256: 521d9e21ddb37bcf50fca8719f17a590544ab37de3ab7ae08bd463770fa05be1

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