Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ee2743c763a053a…

MALICIOUS

PDF

44.8 KB Created: 2021-05-12 08:33:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0302c58681a5cfe04ed95f22ccf37eee SHA-1: f96336499c6dfac6eb2c7ec8c5c73aedf57dabf8 SHA-256: 9ee2743c763a053a0507addbbf260dbd63f2ddffbd0b51a17498ed0ef5b1247d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs that are disguised as game hacks and generators, a common lure for phishing or malware distribution. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of these lures and the PDF structure suggest an attempt to redirect the user to malicious sites, likely for further payload delivery or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/how-to-coin-master-hack-game-hack PDF link annotation
    • http://linde-erbach.de/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://linde-erbach.de/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://linde-erbach.de/images/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • http://linde-erbach.de/images/minecraft-svg-images-free_GM479516143.pdfIn PDF document text
    • http://linde-erbach.de/images/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://linde-erbach.de/images/free-robux-link_GM431946152.pdfIn PDF document text
    • http://linde-erbach.de/images/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://linde-erbach.de/images/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://linde-erbach.de/images/free-roblox-website_GM431946152.pdfIn PDF document text
    • http://linde-erbach.de/images/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • http://linde-erbach.de/images/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://linde-erbach.de/images/hack-coin-master-apk-31_GM406889139.pdfIn PDF document text
    • http://linde-erbach.de/images/master-free-spin_GM406889139.pdfIn PDF document text
    • http://linde-erbach.de/images/can-i-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://linde-erbach.de/images/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://linde-erbach.de/images/coin-master-free-spins-daily-1-ga_GM406889139.pdfIn PDF document text
    • http://linde-erbach.de/images/coin-master-game-hack-app-download_GM406889139.pdfIn PDF document text
    • http://linde-erbach.de/images/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://linde-erbach.de/images/robux-gratis_GM431946152.pdfIn PDF document text
    • http://linde-erbach.de/images/coin-master-hacks-free-spins_GM406889139.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
stream_003_off00004b6f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B6F 24088 bytes
SHA-256: abaa49fb2631a5fecda7b85aa22668909d4a83709c725e48754a095487e474e2
font_01_sfnt_off0000829b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x829B 3188 bytes
SHA-256: 1421293bf7bd09e0a4cad0040c6de0e655925ac0f8862d7d5ff00a586b2d351b
font_02_sfnt_off00008db6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DB6 17880 bytes
SHA-256: b097c0e0a508b19b294d84254edc3a7906d96ed82e768bd7a04e405a1f825274

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