Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d2d042f7b875dbb…

MALICIOUS

PDF

43.8 KB Created: 2021-06-02 08:30:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8797249cdcdc8052c5883741af2571dc SHA-1: 4cf75638b19f808ca53dc9e84550980c373b0f7e SHA-256: 3d2d042f7b875dbb5af85776b1b12a1a6992eb06e754a13c4eb2ecbfb05614e3
82 Risk Score

Malware Insights

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

The PDF document contains a high-severity heuristic indicating it links to a game hack lure, specifically directing users to a URL associated with 'how-to-use-roblox-hack-menu-game-hack'. This suggests the document is designed to trick users into visiting a potentially malicious site, likely to download further malware or engage in credential harvesting. The ML classifier also flagged the PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/how-to-use-roblox-hack-menu-game-hack PDF link annotation
    • http://ansacare.com/images/pubg-uc-cheap-price_GM1330123889.pdfIn PDF document text
    • http://ansacare.com/images/xray-mod-minecraft-114_GM479516143.pdfIn PDF document text
    • http://ansacare.com/images/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://ansacare.com/images/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://ansacare.com/images/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://ansacare.com/images/roblox-character-free_GM431946152.pdfIn PDF document text
    • http://ansacare.com/images/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://ansacare.com/images/free-custom-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://ansacare.com/images/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://ansacare.com/images/windows-10-minecraft-free-with-java_GM479516143.pdfIn PDF document text
    • http://ansacare.com/images/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • http://ansacare.com/images/robuxfree-con_GM431946152.pdfIn PDF document text
    • http://ansacare.com/images/what-is-a-robux_GM431946152.pdfIn PDF document text
    • http://ansacare.com/images/500-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://ansacare.com/images/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://ansacare.com/images/coin-master-heaven-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://ansacare.com/images/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://ansacare.com/images/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • http://ansacare.com/images/coin-master-hack-2021-iphone_GM406889139.pdfIn PDF document text
    • http://ansacare.com/images/ways-to-get-free-robux_GM431946152.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_off00004dd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DD4 24840 bytes
SHA-256: a9b6a958958d1fabee506c950351bde30637a2a7be087e693fa1df7c4773de5c
font_01_sfnt_off0000869c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x869C 18868 bytes
SHA-256: b2b10e95988fa26b7a113f61acd7cdff84d6c7263cf6484e92b5abe97f538155

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