Malicious PDF — malware analysis report

Static analysis result for SHA-256 542ed23bb1c2b7aa…

MALICIOUS

PDF

42.5 KB Created: 2021-05-19 08:06:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 82262b05e4bd2487a21f374d14a87e05 SHA-1: 3a63ac5bb67a697d85a1fa4a4d34b05d5fbc65a0 SHA-256: 542ed23bb1c2b7aa53400d330855e02badbdee2135bad126f6b41a009ebaa8bd
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector infrastructure, which is designed to trick users into downloading a game hack. The ML classifier also flagged this PDF with high confidence. The presence of embedded URLs and the nature of the lure suggest a phishing attempt to distribute potentially unwanted or malicious software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 3

  • 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/406889139/coin-master-apk-hack-3.5-8-game-hack In PDF document text
    • https://cluster-consulting.com/images/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-free-spins-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/javascript-free-robux_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/minecraft-games-free-to-play-online_GM479516143.pdfIn PDF document text
    • https://cluster-consulting.com/images/how-to-hack-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-apk-mod-hack-download_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-hack-cheat-generator-d_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-code-hack_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/minecraft-jar-free_GM479516143.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/oprewards-com-login_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/como-hackear-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-hack-here_GM406889139.pdfIn PDF document text
    • 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_off00004a24.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A24 25056 bytes
SHA-256: d5f70064593c3ec63155de53f9c13ae235bc597df281a9881966d2ece109508e
font_01_sfnt_off0000832f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x832F 18476 bytes
SHA-256: b9b6adf449100deb59ed95ea3ad5e02aaf3681432d01b6b7dc02955a5f5017fc

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