Malicious PDF — malware analysis report

Static analysis result for SHA-256 019e8b057fea3840…

MALICIOUS

PDF

40.8 KB Created: 2021-04-26 17:47:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: abb9267737828898c9781c1011dfaa5b SHA-1: 5616680801c02f10e918c6b351ba88ac6db31761 SHA-256: 019e8b057fea3840198c686c56b2f67c6a847a91dd0bd57d1a066d078fd0d61e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a high-confidence heuristic indicating it links to a 'free generator / game hack' lure. The document body and embedded URLs reinforce this by referencing game hacks and free generators, specifically for Roblox. While no scripts were extracted, the presence of external links suggests a potential redirection to a malicious site or download, likely intended to trick users into downloading malware or engaging in other malicious activities.

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-free-for-pc-download-game-hack PDF link annotation
    • http://wattkit.com/images/how-to-get-robux-for-free-really-works-2021.pdfIn PDF document text
    • http://wattkit.com/images/hack-para-roblox-de-robux-2021.pdfIn PDF document text
    • http://wattkit.com/images/roblox-accsesorie-free.pdfIn PDF document text
    • http://wattkit.com/images/free-tickets-roblox.pdfIn PDF document text
    • http://wattkit.com/images/cheat-engine-get-free-robux.pdfIn PDF document text
    • http://wattkit.com/images/hacker-game-in-roblox.pdfIn PDF document text
    • http://wattkit.com/images/free-roblox-shading-templates.pdfIn PDF document text
    • http://wattkit.com/images/free-robux-no-human-verification-or-app-download.pdfIn PDF document text
    • http://wattkit.com/images/how-to-hack-in-roblox-lumber-tycoon-2.pdfIn PDF document text
    • http://wattkit.com/images/dayz-og-roblox-cheat-codes.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000041bf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x41BF 26128 bytes
SHA-256: a3381d9d50147a648d859c0d3094f03250490715263a2766980b4865427ad9e8
font_01_sfnt_off00007bec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BEC 18836 bytes
SHA-256: 853b3f485e1845cf71ae0321c80b7a6fcb903d8d7d9710dd850ebcdffaa501c0

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