Malicious PDF — malware analysis report

Static analysis result for SHA-256 c28b74f308af5adc…

MALICIOUS

PDF

42.0 KB Created: 2021-04-25 11:51:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 7215d1cd34673e99c1d45bcfa69722ee SHA-1: 16c770b74398704c8fbc005f4cfc8c2b0cd66911 SHA-256: c28b74f308af5adc9eeda94632b20c3e461ab34052f3e39f75413f297bb56389
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure related to game hacks and generators, directing users to a suspicious URL. The ML classifier strongly indicates maliciousness, and the presence of multiple related URLs suggests a phishing or malware distribution campaign. No scripts were extracted, but the document's structure and embedded links point towards a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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/431946152/roblox-shirt-maker-download-free-game-hack PDF link annotation
    • https://new-era.com.tw/image/data/files/how-to-get-free-admin-on-roblox-ios.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/roblox-promo-codes-2021-december-free-robux.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/cheat-engine-roblox-da-hood.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/free-robux-no-human-verification-2021.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/how-to-get-free-robux-2021-no-verification.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/how-do-you-get-free-robux-for-roblox.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/bxworld-free-robux.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/how-do-you-hack-somebody-on-roblox.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/how-to-get-hacks-in-roblox-booga-booga.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/how-to-hack-a-roblox-account-password-2021.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000408c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x408C 27944 bytes
SHA-256: 24f9c392a5e4c2910885a1a730911e9fdf586c3bbd9b919219797dd2e10be0e8
font_01_sfnt_off00007f55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F55 19440 bytes
SHA-256: 55b2c0ae497200dd64042fd04e7fb7cb7502f0e323343ad0f5f34eb15e5d80cc

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