Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0c93a93444349dc…

MALICIOUS

PDF

32.9 KB Created: 2021-07-06 19:52:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: dd7e6b1af6228c9d70c64010cdaaee94 SHA-1: d4df72880da09c703c70357e18cf1fe53fd7fcf0 SHA-256: b0c93a93444349dc39d0fe526ef5a2e2a7c809151c7303e782820d40c4d492ed
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/roblox-booga-booga-hack-game-hack PDF link annotation
    • https://lib.btkljogja.or.id/repository/how-to-get-robux-with-hacking-2021_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/robux-and-tix-hack-2021_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-robux-generator-2021-real_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-coin-spin-daily-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/synapse-download-roblox-free_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/mobile-for-free-roblox_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/get-free-robux-not-fake_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-to-make-hack-roblox_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/roblox-free-download-ipad_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-robux-clothes_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/como-hackear-roblox-apk-mediafire_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/roblox-free-ss_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/original-roblox_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-to-get-free-robux-no-inspect-element-2021_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/robux-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-roblox-wings_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_off00002d5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D5F 21432 bytes
SHA-256: b59c7e78d09ce98aa191f9af9d87acdeaabf6d1a22122801e732e9d673e4cbe0
font_01_sfnt_off00005c5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C5C 18656 bytes
SHA-256: 5517e2d86f7fdb196d5c27d37c24d1d377f5296dc5a2e6953a64d5d77455ff0d

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