Malicious PDF — malware analysis report

Static analysis result for SHA-256 2671b170df4178e5…

MALICIOUS

PDF

33.5 KB Created: 2021-06-26 04:35:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 346ca14ae44e11a8516bccbe0dae8892 SHA-1: bec62fba28b22dde15761f224a1e4d766e820aa3 SHA-256: 2671b170df4178e58b99bbca909656540da570eedffe5981dd4f0f733cc07088
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded URLs and a document body that explicitly mentions 'Roblox Hack' and 'free Robux', indicating a lure for users to download potentially malicious files. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous suspicious URLs, including one using an IP address, reinforces the malicious intent. The document likely serves as a phishing lure to trick users into downloading malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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 http://netcdn.co/app/431946152/uribx-club-roblox-hack-game-hack PDF link annotation
    • http://183.91.70.11/repository/how-to-cheat-on-boxing-simulator-2-roblox_GM431946152.pdfPDF link annotation
    • http://183.91.70.11/repository/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/free-robux-oprewards_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/roblox-free-items-generator_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/is-roblox-free-on-xbox_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/roblox-scythe-script-hack_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • http://183.91.70.11/repository/hack-for-dont-blink-roblox_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/how-to-get-free-robux-no-hack-or_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/coin-master-hack-ios-apk_GM406889139.pdfIn PDF document text
    • http://183.91.70.11/repository/20-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://183.91.70.11/repository/coin-master-fun-free-spins_GM406889139.pdfIn PDF document text
    • http://183.91.70.11/repository/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • http://183.91.70.11/repository/get-robux-now_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://183.91.70.11/repository/itv-television-centre-roblox-free_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/hex-number-gives-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/robux-hack-tools_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
stream_002_off00002d48.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2D48 22044 bytes
SHA-256: d86c3853719ada843f0e8d7f69530dddd99530221a2f5735c958581cfd6e7cf8
font_01_sfnt_off00005e1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E1E 18916 bytes
SHA-256: 66eabd9570f8ce480d0868ce7b23dd38600d957bd7cf975fdfa97a7fd45adcdd

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