Malicious PDF — malware analysis report

Static analysis result for SHA-256 95baad46b8804450…

MALICIOUS

PDF

37.1 KB Created: 2021-05-14 09:30:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 848e8a4a53c4204aeb208e1272c6704b SHA-1: 6cdca19d8c2f0978c6f1422e046ab35da8e08dda SHA-256: 95baad46b8804450591f9775abba41200a91d0083d02cfab53a8527925120f97
92 Risk Score

Malware Insights

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

The PDF document contains a lure for 'Free Robux' and a 'Roblox Generator', impersonating Facebook to trick users into clicking a malicious link. The primary link, https://netcdn.xyz/app/431946152/free-robux-no-verify-2021-game-hack, is associated with credential phishing and redirection. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristics suggest potential for client-side exploitation or further malicious content delivery.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/free-robux-no-verify-2021-game-hack.
  • 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/free-robux-no-verify-2021-game-hack PDF link annotation
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000032f2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32F2 25752 bytes
SHA-256: 3570741f3833a6f7fadbf10629a8a51b83856bd462bcbc3dfaf0f2ed31b476d8
font_01_sfnt_off00006db9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB9 18848 bytes
SHA-256: 9f147bd5bf62c652754f553854fad05fac0b8df637ce3021f80b740c61e7be7f

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