Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6f866ab1c332aec…

MALICIOUS

PDF

46.2 KB Created: 2021-06-02 00:10:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 16bbdab60a8ad9ca38f77dbead6c98f1 SHA-1: 1d46fd5c0e9439c6e7f564ea85a1954d9c5e0cc3 SHA-256: a6f866ab1c332aeca0e1ffbd4d129da8e07a13aee3c91abbf74535bc78bdc5de
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF document contains an embedded URL that leads to a site offering 'working free Robux hacks', a common lure for gamers. The heuristic 'SE_PAYMENT_REDIRECT_LURE' also suggests a pattern of redirecting users to potentially malicious sites. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 4

  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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/working-free-robux-hacks-game-hack
    • https://www.topclassprinting.com/wp-content/uploads/fsqm-files/hacking-roblox-may-2021_GM431946152.pdf
    • https://www.topclassprinting.com/wp-content/uploads/fsqm-files/free-synapse-x-roblox_GM431946152.pdf
    • https://www.topclassprinting.com/wp-content/uploads/fsqm-files/roblox-blood-t-shirt-free_GM431946152.pdf
    • https://www.topclassprinting.com/wp-content/uploads/fsqm-files/jailbrreak-roblox-free-battle-royle-code_GM431946152.pdf
    • https://www.topclassprinting.com/wp-content/uploads/fsqm-files/free-dominus-roblox-mobile_GM431946152.pdf
    • https://www.topclassprinting.com/wp-content/uploads/fsqm-files/roblox-shirt-adidas-free_GM431946152.pdf
    • https://www.topclassprinting.com/wp-content/uploads/fsqm-files/gamecodeseu-free-robux_GM431946152.pdf
    • https://www.topclassprinting.com/wp-content/uploads/fsqm-files/roblox-cheat-engine-cheat-table-executor_GM431946152.pdf
    • https://www.topclassprinting.com/wp-content/uploads/fsqm-files/hack-roblox-accounts-password-traced_GM431946152.pdf
    • https://www.topclassprinting.com/wp-content/uploads/fsqm-files/roblox-the-scary-elevator-red-key-locations-cheat-sheet_GM431946152.pdf
    • https://www.topclassprinting.com/wp-content/uploads/fsqm-files/roblox-aqua-hack_GM431946152.pdf
    • https://www.topclassprinting.com/wp-content/uploads/fsqm-files/roblox-cheat-engine-63-robux-hack_GM431946152.pdf
    • https://www.topclassprinting.com/wp-content/uploads/fsqm-files/free-robux-pastebin-robuxian-easy_GM431946152.pdf
    • https://www.topclassprinting.com/wp-content/uploads/fsqm-files/roblox-boxing-game-hack_GM431946152.pdf
    • https://www.topclassprinting.com/wp-content/uploads/fsqm-files/free-roblox-hack-999999-robux-no-verification-in-pc_GM431946152.pdf
    • https://www.topclassprinting.com/wp-content/uploads/fsqm-files/roblox-invincibility-hack-2021_GM431946152.pdf
    • https://www.topclassprinting.com/wp-content/uploads/fsqm-files/bugmenot-roblox-free_GM431946152.pdf
    • https://www.topclassprinting.com/wp-content/uploads/fsqm-files/roblox-murder-mystery-2-cheat-engine_GM431946152.pdf
    • https://www.topclassprinting.com/wp-content/uploads/fsqm-files/how-to-cheat-in-eviction-notice-roblox_GM431946152.pdf
    • https://www.topclassprinting.com/wp-content/uploads/fsqm-files/roblox-free-jailbreak-vip-server_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000567a.bin
6c1909b6b25e8816f18208a15a407ec95c81c95a2a612065a8102feda2a5bc10		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x567A 25872 bytes
font_01_sfnt_off00008ff6.bin
a679dac58722ee0c2e1608667403dd0b2669703311b55fb587d10fb2528abef5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FF6 19020 bytes

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