Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fda5075d90112c9…

MALICIOUS

PDF

34.3 KB Created: 2021-07-05 02:02:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 77f4302b2093dfdb9c22eb4318f1ed0b SHA-1: a7c52d7fcb769c5634b12ca06a5c2aa83fd8e115 SHA-256: 0fda5075d90112c9a17d3a7f3d334a62676dfacdf447e1d5d6fafe119d80afd8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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/431946152/robuxglobalcom-game-hack PDF link annotation
    • http://shoruq.sch.ae/userfiles/files/free-robux-oin-1-sec_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/pokemon-go-free-and-apple-watch_GM1094591345.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-roblox-website_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-robux-generator-2021-robux-hack-no-survey-updated_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/roblox-november-2021-easy-hacks_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/toolbox-apk_GM479516143.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/minecraft-free-download-linux_GM479516143.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-pants-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-to-get-minecraft-bedrock-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/roblox-assassin_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-robux-apk-no-human-verification_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-hack-ios-no-jailbreak_GM406889139.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_off00002f4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F4A 22436 bytes
SHA-256: 3c094d0d8c9b469d6a533793442c606d29a1fc4e073cfac7ca9f6a86ce2a9d89
font_01_sfnt_off00006165.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6165 18884 bytes
SHA-256: 77bdee58b98e4b81ad8b422e6c8a2d119f103232b777f7197d72db293d7d4d98