Malicious PDF — malware analysis report

Static analysis result for SHA-256 270b24cb211dbcb4…

MALICIOUS

PDF

32.8 KB Created: 2021-07-19 18:50:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 3e60cfb821006954f59f715b96a8b5e7 SHA-1: dc5612c2d8901b3a7a08195e9642238df8324a5e SHA-256: 270b24cb211dbcb409ef6341e13b21f5f08398013611f3517833c2f4783e1a5e
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 0.9900

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-robux-no-human-verification-no-survey-game-hack PDF link annotation
    • http://w-i-r.de/images/roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://w-i-r.de/images/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://w-i-r.de/images/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • https://w-i-r.de/images/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://w-i-r.de/images/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://w-i-r.de/images/minecraft-com-free_GM479516143.pdfIn PDF document text
    • https://w-i-r.de/images/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://w-i-r.de/images/robux-hack-tools_GM431946152.pdfIn PDF document text
    • https://w-i-r.de/images/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • https://w-i-r.de/images/how-to-get-minecraft-for-free-on-phone_GM479516143.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_off0000293a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x293A 22296 bytes
SHA-256: b0a2be2d4c3fff01e61f9f86e360e96d582afd0227a4d6ee13a3829bbd46f5f2
font_01_sfnt_off00005b0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B0C 19340 bytes
SHA-256: eb1e8621334ed51a94bbc255bf386eec5599657d3bf0a8f729de6b7a7c130168

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