Malicious PDF — malware analysis report

Static analysis result for SHA-256 16c95b24d84c4beb…

MALICIOUS

PDF

34.1 KB Created: 2021-06-30 07:19:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: a6f12f9d924278e7488d85382f58e5a3 SHA-1: a9db98084acf9ccd6ad145e76c0a87832d5f496f SHA-256: 16c95b24d84c4beb91aa74c545bf811f5e38ac7ffbe762c354e30f77f1c5ac99
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.co/app/431946152/robux-code-free-robux-generator-game-hack PDF link annotation
    • http://battistibrothers.com/system/userfiles/files/pokemon-go-free-games_GM1094591345.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/roblox-how-to-get-ninja-animation-for-free_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/robux-hack_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/coin-master-links-that-don-t-expire_GM406889139.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/roblox-get-any-tool-hack_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/get-free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/byfanaticz-co-free-robux_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/how-to-hack-a-players-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/coin-master-spin-pattern_GM406889139.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/robux-free-100-real_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/coin-master-free-spins-glitch_GM406889139.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/boku-no-roblox-remastered-hack-chose-quirks_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/com-roblox_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/free-roblox-shirt-templates_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_off00002fc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC7 22140 bytes
SHA-256: 4f32efeb60221019624512c5c6ac642cfc993a092cad60973ec89271f8346d23
font_01_sfnt_off0000602a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x602A 18996 bytes
SHA-256: acdf4e4c7b6b7e3e6500a4b0516174a110c5aafcba42d62de2f9e64ed0b5cdfa

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