Malicious PDF — malware analysis report

Static analysis result for SHA-256 234afccd81dabca9…

MALICIOUS

PDF

46.7 KB Created: 2021-06-09 06:31:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: f6cd82665380792ec716b5886893340d SHA-1: e0920766fdd7f02e85b96aec34bb63022e5a55cb SHA-256: 234afccd81dabca93c70d4af0fe8a095794b6f116667cae1779d624fa3f5e56b
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs and a document body that attempts to lure the user into downloading a malicious file by promising free in-game currency. The ML classifier strongly indicates maliciousness, and the presence of external URIs suggests a download attempt. No scripts were extracted from this sample, but the overall pattern is consistent with a phishing or scam document designed to deliver a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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 https://netcdn.tw/app/431946152/can-you-get-free-robux-from-the-file-explorer-game-hack
    • http://202.56.165.220/digilab/repository/free-candy-script-roblox_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/how-to-get-minecraft-for-free-on-android-device_GM479516143.pdf
    • http://202.56.165.220/digilab/repository/free-robux-group-payouts_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/free-coin-spin_GM406889139.pdf
    • http://202.56.165.220/digilab/repository/free-robux-no-gift-card_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/how-do-you-get-free-robux-without-paying_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/coin-master-key-free-spin_GM406889139.pdf
    • http://202.56.165.220/digilab/repository/free-spins-coin-master-links-2021_GM406889139.pdf
    • http://202.56.165.220/digilab/repository/earn-robux-online_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/lazyblox-com-free-robux_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/roblox-robux-hack-generator_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/coin-master-free-cards-link-2021_GM406889139.pdf
    • http://202.56.165.220/digilab/repository/coin-master-hack-tool-v1-9-download-free_GM406889139.pdf
    • http://202.56.165.220/digilab/repository/how-to-get-free-robux-easy-no-download_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/daily-free-spins-on-coin-master_GM406889139.pdf
    • http://202.56.165.220/digilab/repository/roblox-2021_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/how-to-get-key-in-new-hack-roblox-sh-team_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/free-roblox-hack-us_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/free-robux-kid-friendly-no-human-verification_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/tiktok-free-speech_GM835599320.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005407.bin
7dce3aecc5f214c0aaede672d77c260fa4c790294709d19511857d7c98a53428
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5407 26220 bytes
font_01_sfnt_off0000911f.bin
b31a4baeb1b68e2214ae3183948f11950e65dcb5f92853748948db565bd4bf97
pdf-font-stream PDF embedded font (sfnt) at offset 0x911F 19304 bytes