Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f971bafafdfb0b5…

MALICIOUS

PDF

43.3 KB Created: 2021-05-17 14:09:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4a72c4ff89692b616968318a719c4eac SHA-1: 76afae291120500e164141eae3be0a9568f7825e SHA-256: 2f971bafafdfb0b50359bb112f9d64acaeecc6d1f70d27e6874258aab365f1e4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks, specifically for Roblox, directing users to a suspicious URL. The ML classifier strongly indicated maliciousness, and the presence of numerous embedded URLs further supports a phishing or redirection attempt. No scripts were extracted, but the document's structure and content suggest it's designed to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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-do-u-hack-roblox-game-hack PDF link annotation
    • https://au-ma.com/image/data/files/what-is-coin-master_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • https://au-ma.com/image/data/files/how-to-earn-free-stars-on-coin-master_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/2021-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/freerobux-co_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/roblox-free-pets_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/coin-master-35-16-hack-apk_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/minecraft-story-mode-free-download_GM479516143.pdfIn PDF document text
    • https://au-ma.com/image/data/files/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/make-free-robux_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/free-roblox-clothes-templates_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/roblox-t-shirt-free_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/download-coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/how-to-make-your-own-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://au-ma.com/image/data/files/free-robux-codes_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/roblox-games-com-free_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/online-coin-master-hack-here_GM406889139.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_off00004983.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4983 26124 bytes
SHA-256: 165461e4f7bdb2bbd8eb8fbd2478519154983d46a5ac9873e5a20915a8c2edd4
font_01_sfnt_off0000858a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x858A 18700 bytes
SHA-256: 24715886d6b8435fb8a33d258b866203ee2974827a311e3ab6dcb36e4a196b9f

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