Malicious PDF — malware analysis report

Static analysis result for SHA-256 df7815106ba82db9…

MALICIOUS

PDF

33.2 KB Created: 2021-07-19 14:50:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 14ae298f52534c2d74a940bf7f4473ad SHA-1: 83dc38b3c7f292e13a9069a2c85f3f8ce78f7304 SHA-256: df7815106ba82db982f941f3f733e51605bb713eb8071c7bf3061b0df432eba0
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 0.9942

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-easy-2021-game-hack PDF link annotation
    • http://www.das-kinderzimmer.net/images/free-disney-plus-accounts-tiktok_GM835599320.pdfIn PDF document text
    • http://www.das-kinderzimmer.net/images/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • http://www.das-kinderzimmer.net/images/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://www.das-kinderzimmer.net/images/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://www.das-kinderzimmer.net/images/how-to-get-tiktok-famous-free_GM835599320.pdfIn PDF document text
    • http://www.das-kinderzimmer.net/images/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://www.das-kinderzimmer.net/images/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.das-kinderzimmer.net/images/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.das-kinderzimmer.net/images/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.das-kinderzimmer.net/images/free-tiktok-followers-no-verification-or-survey_GM835599320.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_off00002b10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B10 22264 bytes
SHA-256: 653419929de635d86760f11737dee2b22bdc5cf2c7a4d7d74cf82d431fb1da38
font_01_sfnt_off00005c8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C8F 19276 bytes
SHA-256: 9f22d9eedc59cc6147a13ff82aa3768ba2a0c9b9a35b2047936220c7f40e5b3c

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