Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b397a72af349dd1…

MALICIOUS

PDF

34.8 KB Created: 2021-07-06 16:02:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: a33bce1588301a3a9aabc1eecb19b9d1 SHA-1: 1756d4c4a0d063535109f5657a1eb0800a644b85 SHA-256: 7b397a72af349dd1b49d0668aedd30efa6ceb8081b159e940c280980434fb7b9
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/free-roblox-accounts-with-robux-that-work-not-banned-game-hack PDF link annotation
    • http://library-fkip.uho.ac.id/repository/buzz-free-robux_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/roblox-rifle-script-hack_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/hacks-minecraft_GM479516143.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/roblox-emergency-response-liberty-county-hack_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/tiktok-free-iphone-12_GM835599320.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/roblox-hack-bad-behaviour-solve_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/how-to-install-a-roblox-hacked-client-on-mac_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/robux-hack-pastebin-youtube_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/red-cropped-top-and-ripped-jeans-roblox-outfit-free_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/roblox-hack-new-dtfb-test_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/roblox-hack-script-infinite-health_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-roblox-body_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/roblox-how-to-use-cheat-engine-64_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/500-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-online-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/coin-master-gold-cards-free-link_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-roblox-gift-card_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_off00002fc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC2 22288 bytes
SHA-256: ca2ac75956a4e487e85dd4a48eb7d710561f2631f22de298a779f5a410ea3659
font_01_sfnt_off00006147.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6147 19720 bytes
SHA-256: e7aa0a474f873a6e751f5083720d35e515444fa97241f03d9058db0775c81672

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