Malicious PDF — malware analysis report

Static analysis result for SHA-256 096696cb571dc6c9…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 14:20:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: ee52a3469ca73de193b4c41872d1bb87 SHA-1: 5e4230a810bdb95a38fe3ca6bbb126d889eb30ea SHA-256: 096696cb571dc6c9243b3008644430e3a66b8c43ff5bd73f3d8a3fc0266a5795
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document employs a lure related to 'free Robux' and 'game hacks' to entice users to click on embedded links. The primary link, http://netcdn.tw/app/431946152/get-robux-for-free-2021-game-hack, is identified as a high-risk redirector. While no scripts were directly extracted, the PDF structure and embedded URLs suggest a phishing or scam attempt, likely leading to a malicious download or further compromise.

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/431946152/get-robux-for-free-2021-game-hack PDF link annotation
    • https://xiangquan.com.tw/image/data/files/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/rbx-dream-free-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-long-for-robux-hack-to-get_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-get-free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-generator-no-survey-or-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/what-tiktok-free-robux_GM835599320.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-girl-shirt-free_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-free-exploits_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coins-master-hack_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-roblox-gear_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/minecraft-hacked-client-bedrock_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-free-spins-link-iphone_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/robux-best_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-make-shirt-price-free_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_off00002f9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F9A 22448 bytes
SHA-256: da529bd9240670f4e3426070c9d67a9fea1de559f4556b09807abc9d3ee33450
font_01_sfnt_off000061c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C6 19224 bytes
SHA-256: c7e6ea762fc2e85d80aa6669a0bc8c0fc47ec2f37a4be0fa16c010cf46ec438a

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