Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1aa56b632872543…

MALICIOUS

PDF

41.6 KB Created: 2021-05-24 00:37:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: a26ba245b2a205211ae2d1aabda1d7b5 SHA-1: aaf14f1566d42b3f39dbea10a781b749d10ad583 SHA-256: b1aa56b6328725431ed7fc7cc86dc681566ad06d9ddd8271f4643709555999d8
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 0.8120

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 https://netcdn.xyz/app/406889139/how-to-hack-coin-master-game-hack PDF link annotation
    • https://radiocaxias.com.br/portal/imagens/files/coin-master-game-hack-version-download_GM406889139.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/minecraft-free-download-windows_GM479516143.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/coin-master-free-gold-cards-link_GM406889139.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/roblox-free-hair-girl_GM431946152.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/free-robux-no-verification_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003653.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3653 25576 bytes
SHA-256: be5306b12370a19a7c7cb723c0c8fe07c3ce8debc5118fa937a7b81e0db7201c
font_01_sfnt_off00007037.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7037 7332 bytes
SHA-256: d811e0aca85f3b94c42cd1240eec68b8eb378f3d8be5e408d3f6abd0f11f834d
font_02_sfnt_off0000824f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x824F 17880 bytes
SHA-256: 811ddb8557bc0f5be85009fa6d5ae0baa2b7fc09c58d91c5790597872cecd122

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