Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9dbbad53ca6a09f…

MALICIOUS

PDF

51.0 KB Created: 2021-06-09 11:22:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f01f8ee43bc95652bd6b86ccd5097057 SHA-1: 9c8d1fbdde2203abd82666b929f7da1fa2e1c52b SHA-256: c9dbbad53ca6a09f277014d5c44820703b734f2dc216ee59d57aff15044652ec
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and generators, directing users to a URL that likely hosts malicious content or phishing pages. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent. No scripts were extracted, but the document structure and embedded links suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9849

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/dinosaur-simulator-in-roblox-hack-glitch-for-dna-game-hack PDF link annotation
    • https://cluster-consulting.com/images/free-tiktok-followers-without-verification_GM835599320.pdfIn PDF document text
    • https://cluster-consulting.com/images/dragon-ball-z-final-stand-roblox-free-laevels-3_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/easy-free-roblox-today_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/how-to-get-minecraft-for-free-on-mobile_GM479516143.pdfIn PDF document text
    • https://cluster-consulting.com/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/easy-robux-com_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-roblox-avatar-ideas_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/how-to-get-free-roblox-codes-2021_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-robux-today_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/roblox-free-hair-boy_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-hack-download-apk_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/how-to-get-java-minecraft-free_GM479516143.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-disney-plus-accounts-tiktok_GM835599320.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
stream_004_off00005417.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5417 35636 bytes
SHA-256: 8b3defb76ad66470b23a1d66dfec044bcd1429f67aa6562aefa4d9e1da5c3e87
font_01_sfnt_off0000a2b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2B4 19304 bytes
SHA-256: e8091af22e4a390eeb48ce981d114e263feadea91ca5321c7b0c301ab1c7abbb

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