Malicious PDF — malware analysis report

Static analysis result for SHA-256 2493ab97f9bbefb0…

MALICIOUS

PDF

32.9 KB Created: 2021-07-19 12:51:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 1051c61f908b0c88bd71e19cf9c3ef1c SHA-1: 994010fdd222231d3571f4346b709e0c5f4a3404 SHA-256: 2493ab97f9bbefb030a8628d4740292174dbedb2c9859b21d45855f53969bc0a
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/479516143/how-to-get-minecraft-bedrock-edition-for-free-game-hack PDF link annotation
    • http://abris-jardin.be/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://abris-jardin.be/images/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://abris-jardin.be/images/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://abris-jardin.be/images/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://abris-jardin.be/images/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://abris-jardin.be/images/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://abris-jardin.be/images/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://abris-jardin.be/images/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://abris-jardin.be/images/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • http://abris-jardin.be/images/i-got-hacked-on-roblox_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_off00002c09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C09 22544 bytes
SHA-256: 9ded489a3bf5799bb4cb365ead084568228949ecd0f9e51153c4313edd35d1e7
font_01_sfnt_off00005e1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E1B 18436 bytes
SHA-256: 3a0999d30397def23c47b5d80e97d9b0f28df4cbffb45a09cf4ec0f6b7597619

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