Malicious PDF — malware analysis report

Static analysis result for SHA-256 76edde89255fb5d0…

MALICIOUS

PDF

40.8 KB Created: 2021-05-23 05:35:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: b478ba5574f5e205d995119be0200180 SHA-1: a043fc88a5473e4afa0c2927d5c376f53d8ad96f SHA-256: 76edde89255fb5d0524fc34fe0b68a34ef9a04ef65b559851a67048528c3c7bf
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains multiple lures for free in-game currency, including a prominent link to 'how-to-get-free-robux-without-paying-game-hack'. The presence of a password-protected archive lure suggests an attempt to bypass security controls by encrypting a payload. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7499

Heuristics 5

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.xyz/app/431946152/how-to-get-free-robux-without-paying-game-hack PDF link annotation
    • http://urezerv.com/images/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://urezerv.com/images/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://urezerv.com/images/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://urezerv.com/images/coin-master-links-to-free-spins_GM406889139.pdfIn PDF document text
    • http://192.168.0.99/%20%3Cp%3E%3Cp%3EHow%20can%20you%20get%20Robux%20for%20free%20on%20Roblox?%20What%20you%20need%20to%20do%20is%20just%20putting%20your%20username,%20select%20the%20amount%20of%20robux%20you%20prefer%20and%20complete%20human%20verification.%20Finally,%20robux%20that%20you%20generate%20will%20send%20instant%20into%20your%20roblox%20account%20without%20login%20detail%20need.%3Cp%3E%3Cp%3Ehow%20to%20hack%20one%20punch%20man%20roblox.%20how%20to%20get%20hacked%20roblox%20account%20back.%20Click%20on%20the%20below%20button%20to%20get%20free%20Robux%20codes.%20roblox%20hacking%20lessons.%20Report%20Robux%20Hack%20No%20Human%20Verification%20-%20How%20To%20Actually%20Get%20Free%20Robux%20-%20How%20To%20Get%20Free%20Robux%20On%20Android%20Submit%20a%20report%20Let%20us...%3Cp%3E%3Cp%3E%3Cstrong%3EReferences:%3C/strong%3E%3C/p%3E%3Cp%3E%3Ca%20href=In PDF document text
    • http://192.168.0.99/%20%3Cp%3E%3Cp%3EHow%20can%20you%20get%20Robux%20for%20free%20on%20Roblox?%20What%20you%20need%20to%20do%20is%20just%20putting%20your%20username,%20select%20the%20amount%20of%20robux%20you%20prefer%20and%20complete%20human%20verification.%20Finally,%20robux%20that%20you%20generate%20will%20send%20instant%20into%20your%20roblox%20account%20without%20login%20detail%20need.%3Cp%3E%3Cp%3Ehow%20to%20hack%20one%20punch%20man%20roblox.%20how%20to%20get%20hacked%20roblox%20account%20PDF link annotation
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000353a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x353A 25324 bytes
SHA-256: 3ea299cfd0ae74e0b6b3ef35ca4baa807e6cea4e0409deeefb9f954efc55db15
font_01_sfnt_off00006f09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F09 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00007c1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C1A 19012 bytes
SHA-256: 71b82d70d677a64cc1a0dc5f1d2febc789a96fbad9ccec6e4247842c3fb607dc

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