Malicious PDF — malware analysis report

Static analysis result for SHA-256 a080b3184a7f3ee9…

MALICIOUS

PDF

48.1 KB Created: 2021-06-03 08:04:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1f05bdee8e218322de658a7fea20f421 SHA-1: be58fbca05749820319a7a3219be342428846485 SHA-256: a080b3184a7f3ee91cf7296fa351b453a41fff281353d486b96c83f4997a0226
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a lure for a game hack, directing users to a malicious URL. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and a download button lure further support this assessment. The primary IOC is the malicious URL used to deliver the payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.online/app/479516143/minecraft-free-download-apk-softonic-game-hack PDF link annotation
    • http://www.vermaagri.com/uploaded_files/userfiles/files/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://vermaagri.com/uploaded_files/userfiles/files/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://www.vermaagri.com/uploaded_files/userfiles/files/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://www.vermaagri.com/uploaded_files/userfiles/files/pubg-uc-carding-method-2021_GM1330123889.pdfIn PDF document text
    • http://www.vermaagri.com/uploaded_files/userfiles/files/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://vermaagri.com/uploaded_files/userfiles/files/withdraw-robux_GM431946152.pdfIn PDF document text
    • http://www.vermaagri.com/uploaded_files/userfiles/files/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://vermaagri.com/uploaded_files/userfiles/files/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://www.vermaagri.com/uploaded_files/userfiles/files/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://www.vermaagri.com/uploaded_files/userfiles/files/are-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://www.vermaagri.com/uploaded_files/userfiles/files/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://vermaagri.com/uploaded_files/userfiles/files/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://www.vermaagri.com/uploaded_files/userfiles/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://www.vermaagri.com/uploaded_files/userfiles/files/coin-master-free-spins-generator-no-human-verification_GM406889139.pdfIn PDF document text
    • http://vermaagri.com/uploaded_files/userfiles/files/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://www.vermaagri.com/uploaded_files/userfiles/files/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://vermaagri.com/uploaded_files/userfiles/files/coin-master-32-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://www.vermaagri.com/uploaded_files/userfiles/files/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • http://vermaagri.com/uploaded_files/userfiles/files/gold-card-coin-master-free_GM406889139.pdfIn PDF document text
    • http://vermaagri.com/uploaded_files/userfiles/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000552c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x552C 25120 bytes
SHA-256: 231c92a945c2b74f4bd4688a255c4787ecab730bf5efc83bd37774105adb7d2a
font_01_sfnt_off00008dc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DC1 3056 bytes
SHA-256: dd24a0ab94df4552e459bd06fd01b0fd3f021c1d51d1d64407070e735974a028
font_02_sfnt_off00009834.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9834 18636 bytes
SHA-256: 8d59af17281decbf927120d542a9fc6958c86d48fe17fe9ad1336eeca3d2c8a1

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