Malicious PDF — malware analysis report

Static analysis result for SHA-256 8280714c5ae7c821…

MALICIOUS

PDF

43.1 KB Created: 2021-05-11 06:01:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 8340cce27d135379ecb12e4a72eb1128 SHA-1: b2495ff2e83e84a9770f82048890ce85480dd674 SHA-256: 8280714c5ae7c821ea6f90510ae5672d66bfe70d3518c8fc68b2834ba4d8394b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, disguised as generators for free game currency like Robux. The primary redirect URL is https://netcdn.xyz/app/431946152/roblox-land-free-robux-game-hack. The document body and heuristics indicate a lure designed to trick users into visiting these malicious sites, likely as part of a phishing campaign. No scripts were extracted, but the embedded URLs and redirector heuristics strongly suggest a malicious intent to lead 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 critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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-land-free-robux-game-hack In PDF document text
    • http://italyfixer.com/images/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://italyfixer.com/images/haktuts-coin-master-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://italyfixer.com/images/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • http://italyfixer.com/images/robux-xyz_GM431946152.pdfIn PDF document text
    • http://italyfixer.com/images/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • http://italyfixer.com/images/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://italyfixer.com/images/coin-master-hack-spin_GM406889139.pdfIn PDF document text
    • http://italyfixer.com/images/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://italyfixer.com/images/robux-free-com_GM431946152.pdfIn PDF document text
    • http://italyfixer.com/images/coin-master-attack-block-hack_GM406889139.pdfIn PDF document text
    • http://italyfixer.com/images/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://italyfixer.com/images/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://italyfixer.com/images/download-hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://italyfixer.com/images/hack-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://italyfixer.com/images/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • http://italyfixer.com/images/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://italyfixer.com/images/robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://italyfixer.com/images/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://italyfixer.com/images/free-roblox-gear_GM431946152.pdfIn PDF document text
    • http://italyfixer.com/images/spins-gratis-coin-master-hoy_GM406889139.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_off00004a9e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A9E 25320 bytes
SHA-256: 8e5a15ccda9db8da3de39374df1fd98e5a53cf4d5485450854750f4ce913a4f3
font_01_sfnt_off0000858c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x858C 18492 bytes
SHA-256: dd1922fe1cc281356c7e312f91778e191ebdc244bf13f8823862483f595251c7

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