Malicious PDF — malware analysis report

Static analysis result for SHA-256 792d74193dbf798c…

MALICIOUS

PDF

36.1 KB Created: 2021-05-30 08:50:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 533999f1e4fd7ceda69a546527987b51 SHA-1: 5aa1823348480d88e44047a9ce515567297965ad SHA-256: 792d74193dbf798c7a5eff41e32b2a6d84ca6ec297763637644c102ffe2adf1e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites that promise game hacks and free currency, indicating a lure for scams or potentially malicious downloads. The ML classifier also flagged this PDF as malicious. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9594

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/406889139/coin-master-free-spins-and-coins-game-hack PDF link annotation
    • https://isaf.co.za/wp-content/uploads/fsqm-files/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • https://isaf.co.za/wp-content/uploads/fsqm-files/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • https://isaf.co.za/wp-content/uploads/fsqm-files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://isaf.co.za/wp-content/uploads/fsqm-files/hack-robux_GM431946152.pdfIn PDF document text
    • https://isaf.co.za/wp-content/uploads/fsqm-files/roblox-hack-game_GM431946152.pdfIn PDF document text
    • https://isaf.co.za/wp-content/uploads/fsqm-files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://isaf.co.za/wp-content/uploads/fsqm-files/roblox-hack-generator_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
stream_002_off000032e7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32E7 25112 bytes
SHA-256: 1833a405032d8a226ba88d0ebc4c8d317984d70eac0d916e7f88fe4b537f12ee
font_01_sfnt_off00006c1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C1D 18060 bytes
SHA-256: 7f8980b6f3213b204c7b050e62c653166806b65682437d624869b2fc7a4cb6a7

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