Malicious PDF — malware analysis report

Static analysis result for SHA-256 2100fdf6e68f7e3e…

MALICIOUS

PDF

34.8 KB Created: 2021-07-08 00:59:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: da5da14acbeebbe7fad1bbc1f0acdc96 SHA-1: 92da325fec77438016cfe91a1f2f98aea25215e6 SHA-256: 2100fdf6e68f7e3ec45223de8c18c5b8ee930aea82e78d0f598919698c6854dc
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/how-to-get-free-robux-without-email-game-hack PDF link annotation
    • https://htdvn.com/public/upload/files/picture-roblox_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/identity-fraud-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-robux-no-download-2021_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/coin-master-card-hack-2021_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/how-to-get-free-robux-for-cumputer_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/admin-in-roblox-hack_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/dbz-rage-roblox-hack_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/how-to-hack-download-level-dragon-ball-final-stand-roblox_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-robux-passtebin_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/coin-master-daily-free-spins-blog_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/hacking-dungeon-quest-roblox-2021_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/roblox-hack-com_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-robux-pastebin-no-subscribe-2021_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-roblox-membership-codes_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/how-to-get-free-robux-instantly-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/roblox-pokemon-brick-bronze-cheat_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/youtube-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3026 22052 bytes
SHA-256: 26d2d61d8df9f9e854394768cd796501a653cd2cef85b12c81012918c2d04561
font_01_sfnt_off000060e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E9 19800 bytes
SHA-256: 7cc36b060554649fa6389e53221d06b2ae285b8e0623c743bba4dd7e0ab481d9

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