Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d5bed3e8f8bda33…

MALICIOUS

PDF

31.8 KB Created: 2021-07-21 17:42:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 14a2ac79134ea141d4c7aa29b7fc999c SHA-1: 2002130a2bd1b9c26d55a195bc7dd6783476c78d SHA-256: 6d5bed3e8f8bda332c1a94441bffe9e16f3f7bef45cb53f209c277e9e0f89d0e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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 http://netcdn.tw/app/431946152/free-robux-not-fake-game-hack PDF link annotation
    • https://belixconstructions.com.au/images/free-tiktok-accounts_GM835599320.pdfIn PDF document text
    • https://belixconstructions.com.au/images/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • https://belixconstructions.com.au/images/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • https://belixconstructions.com.au/images/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
    • https://belixconstructions.com.au/images/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://belixconstructions.com.au/images/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • https://belixconstructions.com.au/images/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://belixconstructions.com.au/images/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://belixconstructions.com.au/images/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://belixconstructions.com.au/images/roblox-robux-hack_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_off00002783.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2783 22240 bytes
SHA-256: b03d285ec21454b2db9e8d44a437d5e2581e1a0b5a510dbaa2c751371f17012e
font_01_sfnt_off000058c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58C5 18700 bytes
SHA-256: 63c9335a4adc4e13574000769c24cfa85aa9e1cd85ca076c26101e8843d87216

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