Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3102f37dd082257…

MALICIOUS

PDF

34.6 KB Created: 2021-07-07 06:21:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d255460ab560f38e9ac7ba526af0ce53 SHA-1: ae9451aa416aef3b1a8c0e4828d7791842fb39e6 SHA-256: a3102f37dd082257df135d468d28e6f16cfc4e4e2e49590fcad50d8d0ea6b8a2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a 'free generator / game hack' lure. The document body and extracted URLs reinforce this, pointing to sites offering game cheats and hacks for popular games like Roblox. This suggests the PDF is designed to trick users into visiting malicious sites that likely host further malware or phishing content.

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/roblox-toy-codes-free-game-hack PDF link annotation
    • https://morishita-tc.com.tw/image/data/files/free-robux-hack-trackid-sp006_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/coin-master-hack-tool-v1-9-pc_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/70-free-robux_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/roblox-free-play_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/is-free-robux-real_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/jaibreak-hack-roblox-script-auto-aresst_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/speed-hack-roblox-2021-in-any-game_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/hack-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/how-to-get-free-robux-website-no-verifcation_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/minecraft-iphone-free_GM479516143.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/coin-master-hack-mod-game-download_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/roblox-hack-download-pc_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_off00002ffe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FFE 22436 bytes
SHA-256: df382cab007b89dd3ba3325ad7e16811246c47c4cdae6cd29091e8bf1cfae86f
font_01_sfnt_off0000621d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x621D 19004 bytes
SHA-256: 4f1d318f129c1882889b60810a73cc726ccc81ddee59629350cba5c7dcb87811

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