Malicious PDF — malware analysis report

Static analysis result for SHA-256 0958bf76526b8df5…

MALICIOUS

PDF

48.9 KB Created: 2021-06-09 17:20:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e4600b9125ff30199b96d39ef54cb17f SHA-1: 8f42b29de5db16680d8f804e1784a21ca7d5dc3f SHA-256: 0958bf76526b8df5c202eee029fcb354c9d6e76a3ba677ba33b0853f0f6b5d8b
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple embedded URIs and a high-confidence ML classifier indicates maliciousness. The document body, though heavily obfuscated, suggests a lure for game-related hacks or cheats. The presence of a clickable URI pointing to a raw IP address and the overall structure strongly suggest an attempt to trick the user into downloading a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/broken-bones-roblox-hack-v3rmillion-game-hack
    • http://202.56.165.220/digilab/repository/free-robux-mod_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/cheat-roblox-phamtom-force_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/minecraft-hacked-client-download_GM479516143.pdf
    • http://202.56.165.220/digilab/repository/coin-master-hack-tool-no-survey_GM406889139.pdf
    • http://202.56.165.220/digilab/repository/roblox-printables-free_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/free-coin-master-spins-no-verification_GM406889139.pdf
    • http://202.56.165.220/digilab/repository/coin-master-free-spins-generator-no-human-verification_GM406889139.pdf
    • http://202.56.165.220/digilab/repository/coin-master-free-2021-spin-link_GM406889139.pdf
    • http://202.56.165.220/digilab/repository/free-coin-master-spins-2021_GM406889139.pdf
    • http://202.56.165.220/digilab/repository/free-coin-master-hack-no-verification_GM406889139.pdf
    • http://202.56.165.220/digilab/repository/how-to-get-unlimited-robux_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/minecraft-rtx-download-free_GM479516143.pdf
    • http://202.56.165.220/digilab/repository/coin-master-free-cards-2021_GM406889139.pdf
    • http://202.56.165.220/digilab/repository/free-robux-com_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/roblox-hack-com_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/free-robux-com-2021_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/free-spins-on-coin-master-2021_GM406889139.pdf
    • http://202.56.165.220/digilab/repository/free-robux-generator-for-roblox-2021_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/ways-to-get-free-robux_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/robux-hack-no-game-download_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004fbb.bin
793beb178671fea8dcd030356043b901fe0898e443235f5087cb51996e189b99
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FBB 28688 bytes
font_01_sfnt_off0000910f.bin
77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
pdf-font-stream PDF embedded font (sfnt) at offset 0x910F 2832 bytes
font_02_sfnt_off00009abf.bin
163d29aa03f271f74d868a97ef2871456850d3de76af06be219ad68042ab16b6
pdf-font-stream PDF embedded font (sfnt) at offset 0x9ABF 18872 bytes