Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd4850f640e6b110…

MALICIOUS

PDF

44.5 KB Created: 2021-05-11 06:05:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 16fa052ee563fdc3bc6d6cf73b49c120 SHA-1: f3f5f7885eb44b2b4b8ba6cc5c8c8e9892455d84 SHA-256: dd4850f640e6b1103028f679b9df13cb8a0551b53018e05e466441f623a8b377
102 Risk Score

Malware Insights

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

The document contains a lure for free in-game currency and hacks, directly linking to a suspicious URL. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URIs suggests an attempt to redirect the user to a malicious site. The document body's content and the embedded URI indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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/406889139/free-coin-master-hacks-no-verification-or-survey-game-hack PDF link annotation
    • http://pwpyemen.org/images/best-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://pwpyemen.org/images/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/rbxdemon_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/how-to-change-your-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://pwpyemen.org/images/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • http://pwpyemen.org/images/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/robux-online_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/free-roblox-passwords_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/coin-master-game-free-play-online_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/free-robux-images_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/roblox-avatar-editor-free_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d0e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D0E 30368 bytes
SHA-256: f87fd8bde427ea710db5e60d5f2dd26e48617dae066a7c055c0aef26de7a20c3
font_01_sfnt_off00008b53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B53 18448 bytes
SHA-256: 6033c807022dc8f5e7c2550342d577dba769a4341b0264654ce29c91acd4bdf4

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