Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc3396811d61bbe…

MALICIOUS

PDF

34.4 KB Created: 2021-07-03 14:52:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 80d4878751b25e71c267af21924f422e SHA-1: 7f56dc33aeca474aed075fac46a7b4faa1f9cb8b SHA-256: 1dc3396811d61bbe637a0a322abd3fe53dc5f69f3718a0818a1aaf9547fa026b
102 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 5

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/free-robux-generator-for-kids-game-hack PDF link annotation
    • http://110.232.83.89/slimsppks/repository/javascript-free-robux_GM431946152.pdfPDF link annotation
    • http://110.232.83.89/slimsppks/repository/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-coins-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/robux-free-wordpress_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/coin-master-hack-generator_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/coin-master-hacked-apk-download-for-android_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-gold-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-800-robux_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-robux-promo-codes-february-2021-not-expired_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-attacks-coin-master_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/robux-without-verification_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/300-daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/coin-master-hack-app-for-ios_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/minecraft-mod-menu-apk_GM479516143.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_off00002ec2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EC2 22596 bytes
SHA-256: 8a06ade91132fe9b5878a0155671f69c57fd0e58dd8168273fc6e83d93ebb133
font_01_sfnt_off00006127.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6127 19112 bytes
SHA-256: bfd1a83f6845c5ddf7ed6c77f5c6ea2f08ed895d31f12c1f792f1c6eedabde29

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