Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfd42f8a8cdcbb4e…

MALICIOUS

PDF

35.0 KB Created: 2021-07-06 09:07:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8d5951333d7161b50fb96b86f42f067a SHA-1: 814c92c7c5da451683289b6e4380cb6949426ad7 SHA-256: bfd42f8a8cdcbb4e16d44e8d1e45a6a02e28b2ebd3730a74ef66a0bfbfa07a04
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a document body that advertises 'Roblox Hacks' and 'Free Robux', indicating a lure for users to download potentially malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs, including one pointing to a raw IP address, reinforces the malicious intent. No scripts were extracted, but the overall pattern suggests a phishing or malware distribution attempt.

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.tw/app/431946152/fe-roblox-hacks-game-hack
    • http://202.56.165.220/digilab/repository/how-to-hack-retail-tycoon-roblox_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/roblox-login-free-robux_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/free-robux-by-watching-ads_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/classic-minecraft-net-hacks_GM479516143.pdf
    • http://202.56.165.220/digilab/repository/shinobi-life-roblox-hack-2021-february_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/kuso-icu-roblox-hack_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/coin-master-free-spins-link-download-apk_GM406889139.pdf
    • http://202.56.165.220/digilab/repository/how-to-get-cool-clothes-on-roblox-for-free_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/free-robux-generator-no-verification-2021_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/roblox-admin-hack-adopt-and-raise-a-cute-kid_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/welcome-to-bloxburg-roblox-free_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/get-free-dominus-on-roblox_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/roblox-jailbreak-free-moolah_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/free-robux-gen_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/how-to-get-free-shirts-roblox-bc_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/games-that-give-free-robux_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/coin-master-heaven-free-spins-today_GM406889139.pdf
    • http://202.56.165.220/digilab/repository/wwwfree-roblox-hack_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/is-minecraft-earth-free_GM479516143.pdf
    • http://202.56.165.220/digilab/repository/coin-master-free-cards-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003145.bin
e03fc136079d3dd48a950653f7a119efc7206c818c08e450bbc8879cf00799dc
pdf-font-stream PDF embedded font (sfnt) at offset 0x3145 22952 bytes
font_01_sfnt_off00006504.bin
09719a5611fa3266ad2086c7e041ce5477ab5c39ec12664afdf97dc4a0a71da2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6504 18636 bytes