Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c3e858eaae1efa7…

MALICIOUS

PDF

40.8 KB Created: 2021-05-14 10:04:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2f1eec27d664cdf28a5892325d7195fe SHA-1: 23217b83a32319427c7c9620d110785bb7691856 SHA-256: 8c3e858eaae1efa79f674f51b10ac81d4fe600fc400082fe55212ac6326446a1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document uses a lure related to game hacks and free currency to trick users into clicking embedded links. The document body and heuristics indicate a redirection to malicious websites that likely host further malware or phishing content. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9443

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/431946152/how-to-get-a-free-dominus-in-roblox-game-hack PDF link annotation
    • http://io24.com.ar/images/coin-master-apk-hack-32_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/free-robux-websites-no-human-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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003b54.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3B54 28084 bytes
SHA-256: 2f735cdd08e9a0d710bb499ea62ee9fbe52fd83a9d3f7fa16304dc275faf425c
font_01_sfnt_off00007c1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C1A 18904 bytes
SHA-256: 6e08a1d3d8db35cbcf3453bc44fd51b371bae21527e0bfedf630d8e5389ff3c5

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