Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6f65f79775e30fd…

MALICIOUS

PDF

35.6 KB Created: 2021-07-03 16:44:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7ee2b014cda864a81333554c74d8334e SHA-1: 10380d6058d12348144348bb3cd637fd4ecde3a2 SHA-256: c6f65f79775e30fd74d6d0dc8345cb0ab281f4aa231652799be8f7d570b9fb7c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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.tw/app/406889139/coin-master-hack-without-verification-game-hack PDF link annotation
    • https://3qblocks.com.tw/image/data/files/roblox-login-hack_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/how-to-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-robux-codes-trackid-sp006_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-draw-2-roblox-hack_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-online-hack-2021_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-free-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/how-to-get-free-roebucks-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-summer-grl-roblox-skins_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/hack-xp-net-coin-master_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/robux-sign_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-roblox-noob-gameplay_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/roblox-gift-card-free-no-human-very_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-spins-coin-master-without-survey_GM406889139.pdfIn PDF document text
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.htmlIn 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_off000032eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32EB 23320 bytes
SHA-256: 63c63f46dd018beb14fb467bb51800834d3143376afe5a4dde04068a263fa1db
font_01_sfnt_off00006788.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6788 18640 bytes
SHA-256: e70c731676407bb7de6fff885d091169cd44aed03cdfcdb15904209bbd23907c

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