Malicious PDF — malware analysis report

Static analysis result for SHA-256 5db574cc94d6fc2e…

MALICIOUS

PDF

33.8 KB Created: 2021-07-20 12:53:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7e1a4e3e07d6a1f68dd272917671f362 SHA-1: 6ff214dc49269ee5f7774d09c3158f1e4ae87f6c SHA-256: 5db574cc94d6fc2e49a5f8bfe6453108a397c9adc3b2916991c33f66f6c14051
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 0.9946

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-generator-no-verification-game-hack PDF link annotation
    • https://magistrinfo.ru/images/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://magistrinfo.ru/images/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • https://magistrinfo.ru/images/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • https://magistrinfo.ru/images/free-tiktok-followers-no-human-verification-or-survey-2021_GM835599320.pdfIn PDF document text
    • https://magistrinfo.ru/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://magistrinfo.ru/images/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://magistrinfo.ru/images/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • https://magistrinfo.ru/images/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • https://magistrinfo.ru/images/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • https://magistrinfo.ru/images/free-robux-website_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_off00002e3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E3A 22588 bytes
SHA-256: c19b7650a1da64ad2503435553a93bde1ce3c2ec38222a0385cf2790bffda4bf
font_01_sfnt_off0000605f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x605F 18788 bytes
SHA-256: e361fbecc352af17f8cabf696f2a077c4ddccd505b520027ab76983db418d050

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