Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2aa5fc12b0a0b29…

MALICIOUS

PDF

42.7 KB Created: 2021-05-16 07:42:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 1a9d067c02ad53a42e51eecf2e21de85 SHA-1: 100ce91ade2fa8fc775ec8b6f476fc2eaa5cc48c SHA-256: b2aa5fc12b0a0b29e5675fef436829bdd1b67ae18773ca8d66706cd437144f83
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, including one identified as a 'free generator / game hack' lure. The document body also contains a URL pointing to a game hack resource. These elements suggest the PDF is designed to trick users into visiting malicious sites, likely for malware distribution or phishing. No scripts were extracted, but the presence of embedded URLs and the ML classifier's high confidence indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/promo-codes-to-get-free-robux-game-hack PDF link annotation
    • http://www.zdravazena.sk/images/wurst-client-download_GM479516143.pdfIn PDF document text
    • http://www.zdravazena.sk/images/rbx-sites_GM431946152.pdfIn PDF document text
    • http://www.zdravazena.sk/images/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://www.zdravazena.sk/images/free-rewards-coin-master_GM406889139.pdfIn PDF document text
    • http://www.zdravazena.sk/images/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.zdravazena.sk/images/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.zdravazena.sk/images/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.zdravazena.sk/images/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.zdravazena.sk/images/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://www.zdravazena.sk/images/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://www.zdravazena.sk/images/coin-master-game-hunter_GM406889139.pdfIn PDF document text
    • http://www.zdravazena.sk/images/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://www.zdravazena.sk/images/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://www.zdravazena.sk/images/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://www.zdravazena.sk/images/easy-roblox-today_GM431946152.pdfIn PDF document text
    • http://www.zdravazena.sk/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.zdravazena.sk/images/minecraft-free-download-mac-full-version-2021_GM479516143.pdfIn PDF document text
    • http://www.zdravazena.sk/images/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://www.zdravazena.sk/images/if-i-uninstall-minecraft-can-i-reinstall-it-for-free_GM479516143.pdfIn PDF document text
    • http://www.zdravazena.sk/images/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A11 24924 bytes
SHA-256: 3a22b87209781193afc44d73304178a2137a300157bf5a30d8ce0fc9ea9d082b
font_01_sfnt_off00008381.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8381 18704 bytes
SHA-256: 994ba2c21992eebcab5dcb0bf7b99b22a17e2009da779e2696cdc2096136ed4a

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