Malicious PDF — malware analysis report

Static analysis result for SHA-256 c74d6e483b473220…

MALICIOUS

PDF

42.8 KB Created: 2021-05-24 02:20:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: d1b83aa92474192897c3b4ea10bf1c34 SHA-1: 200e67e84483148232fd311e178533c83ef4f4d7 SHA-256: c74d6e483b4732209dedd4a1cb146e19dc78944c21da25c7180af2831f05fe6d
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple lures related to game hacks and generators, directing users to external URLs. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' and the presence of suspicious URLs strongly indicate a phishing or malware distribution attempt. The document body also contains a "CLICK HERE TO ACCESS ROBLOX GENERATOR" call to action, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8090

Heuristics 5

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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-script-hack-game-hack PDF link annotation
    • https://corbo.ru/images/free-robux-download_GM431946152.pdfIn PDF document text
    • https://corbo.ru/images/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://corbo.ru/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://corbo.ru/images/how-to-get-free-coins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://corbo.ru/images/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000323f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x323F 32704 bytes
SHA-256: cf3d7925c274ad6c066b7cdbb1d920975c858f6f204072cf85e48e535a480385
font_01_sfnt_off00007b86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B86 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off00008534.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8534 18580 bytes
SHA-256: c1944f3c26fd870ce0e5de863125d21882df0ce96ba9356e52db8af51b5248a2

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