Malicious PDF — malware analysis report

Static analysis result for SHA-256 084745ea6fce9db7…

MALICIOUS

PDF

42.6 KB Created: 2021-05-11 04:43:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: bcc719d0e20a49ffc343eee2af922362 SHA-1: 87fcd7a4259db74685434a1b7af5f00f54eacfe6 SHA-256: 084745ea6fce9db7a2d2ae0de4511906edd7a7b579956840c1346af942c78691
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains a lure for free game items, specifically for Coin Master, and includes a prominent link to a suspicious URL. The heuristic 'SE_SECRET_RECOVERY_LURE' suggests the document may also attempt to phish for sensitive information like private keys or passwords. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent, likely to lead users to a site that either downloads malware or conducts further phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/coin-master-invite-friends-free-spins-game-hack PDF link annotation
    • https://laconce.com/images/minecraft-java-free-account_GM479516143.pdfIn PDF document text
    • https://laconce.com/images/guide--coin-master-free-tips_GM406889139.pdfIn PDF document text
    • https://laconce.com/images/robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • https://laconce.com/images/how-many-villages-are-in-coin-master_GM406889139.pdfIn PDF document text
    • https://laconce.com/images/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • https://laconce.com/images/roblox-gift-card-free-codes_GM431946152.pdfIn PDF document text
    • https://laconce.com/images/roblox-rewards_GM431946152.pdfIn PDF document text
    • https://laconce.com/images/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://laconce.com/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://laconce.com/images/oprewards-points-generator_GM431946152.pdfIn PDF document text
    • https://laconce.com/images/coin-master-unlimited-spins-hack_GM406889139.pdfIn PDF document text
    • https://laconce.com/images/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://laconce.com/images/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • https://laconce.com/images/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://laconce.com/images/free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • https://laconce.com/images/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • https://laconce.com/images/robux-win_GM431946152.pdfIn PDF document text
    • https://laconce.com/images/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • https://laconce.com/images/free-robux-offers_GM431946152.pdfIn PDF document text
    • https://laconce.com/images/roblox-free-robux-generator_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_off00004a90.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A90 25412 bytes
SHA-256: bb9fee9d8868685e62d2b512e21156338285d931a2e874db4ed846399d9edc56
font_01_sfnt_off000084a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84A2 18172 bytes
SHA-256: 894a1adcc26929d36602ddbdb38684ee1c59a25b9ea4d8d8786e8c61a01daafb

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