Malicious PDF — malware analysis report

Static analysis result for SHA-256 98fab7ed45e03440…

MALICIOUS

PDF

44.4 KB Created: 2021-06-09 03:21:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2b433984ff7094a2650c20a033c85864 SHA-1: 3783ee382e062c08a7c39bc1f12b29567b59e696 SHA-256: 98fab7ed45e03440b497aac4c6caef0e5e54a9f5f2ba5d0552afa651d7db53c2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and free currency, directing users to a suspicious URL. The presence of embedded URLs and the ML classifier's high confidence indicate a malicious intent to redirect users to potentially harmful content. No scripts were extracted, but the document's structure and embedded links suggest a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/alone-roblox-how-to-get-free-cash-game-hack PDF link annotation
    • http://kompanievska-selrada.gov.ua/images/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • http://kompanievska-selrada.gov.ua/images/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://kompanievska-selrada.gov.ua/images/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • http://kompanievska-selrada.gov.ua/images/coin-master-unlimited-spins-hack_GM406889139.pdfIn PDF document text
    • http://kompanievska-selrada.gov.ua/images/claim-free-robux-button_GM431946152.pdfIn PDF document text
    • http://kompanievska-selrada.gov.ua/images/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://kompanievska-selrada.gov.ua/images/coin-master-hack-cydia_GM406889139.pdfIn PDF document text
    • http://kompanievska-selrada.gov.ua/images/minecraft-bedrock-free-download_GM479516143.pdfIn PDF document text
    • http://kompanievska-selrada.gov.ua/images/free-robux-glitch-july-2021_GM431946152.pdfIn PDF document text
    • http://kompanievska-selrada.gov.ua/images/pastebin-roblox-hack-robux-2021_GM431946152.pdfIn PDF document text
    • http://kompanievska-selrada.gov.ua/images/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://kompanievska-selrada.gov.ua/images/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://kompanievska-selrada.gov.ua/images/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://kompanievska-selrada.gov.ua/images/download-hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://kompanievska-selrada.gov.ua/images/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://kompanievska-selrada.gov.ua/images/wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://kompanievska-selrada.gov.ua/images/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://kompanievska-selrada.gov.ua/images/coin-master-hack-2021-no-survey_GM406889139.pdfIn PDF document text
    • http://kompanievska-selrada.gov.ua/images/minecraft-free-install_GM479516143.pdfIn PDF document text
    • http://kompanievska-selrada.gov.ua/images/best-items-for-free-in-roblox_GM431946152.pdfIn PDF document text
    • https://krnl.rocksIn 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_off00005012.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5012 25476 bytes
SHA-256: 1199db9abff927f88536c6c3aa3f66900d47a0496a06889d41ac36bece89e688
font_01_sfnt_off000089bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89BD 18608 bytes
SHA-256: c9660dc736701c11b7911411b3b9f87c58e7b69bc0d203445c3664314d97085a

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