Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddfbeff43b23cac3…

MALICIOUS

PDF

41.6 KB Created: 2021-05-13 11:05:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 91a5602674368527d8086db6ecbdd25e SHA-1: b118864d9cbcf8fa560a04476964d68d764c7041 SHA-256: ddfbeff43b23cac3451441a8718824c445d5f8601c308cdde62576b52e66d5ab
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic indicating it links to a 'free generator / game hack' lure, specifically mentioning 'free Robux'. The embedded URLs and document body text reinforce this theme, suggesting a social engineering tactic to drive users to malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded URLs are sufficient to infer a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/free-robux-no-gift-card-game-hack PDF link annotation
    • http://edvintage.com/images/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • http://edvintage.com/images/get-free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://edvintage.com/images/114-4-hacks_GM479516143.pdfIn PDF document text
    • http://edvintage.com/images/how-to-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://edvintage.com/images/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • http://edvintage.com/images/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://edvintage.com/images/how-to-get-more-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://edvintage.com/images/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • http://edvintage.com/images/minecraft-ore-finder-mod_GM479516143.pdfIn PDF document text
    • http://edvintage.com/images/minecraft-bedrock-edition-hacks_GM479516143.pdfIn PDF document text
    • http://edvintage.com/images/free-robux-picture_GM431946152.pdfIn PDF document text
    • http://edvintage.com/images/free-roblox-toy-codes-not-used_GM431946152.pdfIn PDF document text
    • http://edvintage.com/images/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://edvintage.com/images/free-coin-master-spins-blogger_GM406889139.pdfIn PDF document text
    • http://edvintage.com/images/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://edvintage.com/images/how-to-hack-coin-master-with-root_GM406889139.pdfIn PDF document text
    • http://edvintage.com/images/coin-master-daily-gifts_GM406889139.pdfIn PDF document text
    • http://edvintage.com/images/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://edvintage.com/images/coin-master-free-500-spins-link_GM406889139.pdfIn PDF document text
    • http://edvintage.com/images/minecraft-realms-free_GM479516143.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
font_00_sfnt_off00004610.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4610 24908 bytes
SHA-256: 79bc0c45916d861f115b0f57ef4148692e1aee26b67c3330b0276a7a348a96d3
font_01_sfnt_off00007f0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F0F 18640 bytes
SHA-256: 5e2a3e67d4e6faa48e47b93c69738121aad1fd6f7e815cfd3538255806571323

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