Malicious PDF — malware analysis report

Static analysis result for SHA-256 3163a8c129109533…

MALICIOUS

PDF

36.6 KB Created: 2021-07-03 15:51:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 9a2d8959fe739781d8c557b0f3847d0e SHA-1: 1c8cb9a024083b810091a3767e59e9547b382a63 SHA-256: 3163a8c129109533e001e347c9828ddba0f8f71ec2d50d573f09d796361398e4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic firing for a game hack redirect lure, pointing to the URL http://netcdn.tw/app/406889139/moonactive-coin-master-free-spins-link-game-hack. The document body and embedded URLs reinforce this theme, suggesting a phishing or scam attempt to trick users into visiting potentially malicious sites. No scripts were extracted, but the overall pattern indicates a social engineering attack.

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/moonactive-coin-master-free-spins-link-game-hack PDF link annotation
    • http://cleansui.com.tw/image/data/files/pokemon-go-free-or-pokeball-plus_GM1094591345.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/free-catalog-clothing-roblox-2021_GM431946152.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/coin-master-twitter-free-spins_GM406889139.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/minecraft-java-edition-free-trial_GM479516143.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/roblox-hack-no-download-no-survey-no-password-2021_GM431946152.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/blue-hacks-team-roblox_GM431946152.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/coin-master-free-link-daily_GM406889139.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/roblox-how-to-get-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/master-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/artmoney-roblox-admin-hack_GM431946152.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/withdraw-robux_GM431946152.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/androeed-ru-minecraft_GM479516143.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/moonactive-free-spins-link_GM406889139.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/hacks-roblox_GM431946152.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/rich-roblox-account-for-free_GM431946152.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/free-spins-coin-master-links-blogger_GM406889139.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/free-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000036d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36D8 23484 bytes
SHA-256: 7cb0c82f53293dceec9aceb0fcc7b5b6c2980e2204a658b3da216a0bf2e96ee0
font_01_sfnt_off00006be5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE5 18460 bytes
SHA-256: 2883425220e913a7562a99f4ec338813a638a2cee0d7b623b8123d2cd5a34c9f

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