Malicious PDF — malware analysis report

Static analysis result for SHA-256 4559251597ec05de…

MALICIOUS

PDF

34.6 KB Created: 2021-06-26 00:42:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 1252564eb978c2b560b96ecb92ec6238 SHA-1: 64902f7e0b9ac7964ae5dbb55709ee18a1f9d0b0 SHA-256: 4559251597ec05decf5b8c89314b04e171d42ef8293498fe68bff9baf89abd62
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are hosted on suspicious domains and appear to offer game cheats or hacks. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs and a callback lure heuristic suggests a phishing or scam attempt. The document's content, while obfuscated, points towards a lure for game-related exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/cheat-roblox-bleach-primera-game-hack PDF link annotation
    • http://feuerwehr-rheinau.de/images/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/free-robux-promo-codes-september-2021_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/f12-key-to-cheat-in-roblox_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/pubg-uc-generator-without-verification_GM1330123889.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/free-robux-no-codes_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/roblox-free-followers_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/how-to-get-free-robux-on-tablet-2021_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/tiktok-views-free_GM835599320.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/dodgeball-roblox-hack_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/roblox-hack-robot-animation-gui_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/how-can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/is-tiktok-app-free_GM835599320.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/el-hacker-de-roblox_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/do-the-obby-for-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000309a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x309A 22172 bytes
SHA-256: 22250d020bfa137639764ca699ed51ed122206fd155456f3a95ce42fd4196f7b
font_01_sfnt_off0000618a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x618A 19292 bytes
SHA-256: 156414832c5f2c3cd0c60c5f5cfbe4c9c32eb22e813e4a3ef93e1ac0c1fa8083

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