Malicious PDF — malware analysis report

Static analysis result for SHA-256 32667ee0b3abdde0…

MALICIOUS

PDF

35.9 KB Created: 2021-06-24 23:40:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: be0476cea496415c4c0079d99fd485c9 SHA-1: c4cdc947ae85ea4aaa53ea107ff3dcdaf8900b56 SHA-256: 32667ee0b3abdde06511e89678c4dd72b2f3c56f3cfefd0980ee8f97cedd6885
102 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, identified as a PDF link farm, that point to websites offering free in-game currency and accounts. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and a call-to-action phrase suggests a phishing or scam attempt. The document likely serves as a lure to direct users to malicious websites that may host further exploits or attempt to steal credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation 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 http://netcdn.co/app/431946152/free-roblox-accounts-with-admin-permissions-game-hack
    • https://dribledasortegaucho.com.br/uploads/files/free-spins-and-coins-coin-master-2021-link_GM406889139.pdf
    • https://dribledasortegaucho.com.br/uploads/files/coin-master-free-spins-fb_GM406889139.pdf
    • https://dribledasortegaucho.com.br/uploads/files/coin-master-promo-code-2021_GM406889139.pdf
    • https://dribledasortegaucho.com.br/uploads/files/coin-master-free-spins-ios-2021_GM406889139.pdf
    • https://dribledasortegaucho.com.br/uploads/files/how-to-actually-get-free-robux_GM431946152.pdf
    • https://dribledasortegaucho.com.br/uploads/files/minecraft-kill-aura_GM479516143.pdf
    • https://dribledasortegaucho.com.br/uploads/files/todays-free-spin-and-coin-links_GM406889139.pdf
    • https://dribledasortegaucho.com.br/uploads/files/free-robux-no-human-verification_GM431946152.pdf
    • https://dribledasortegaucho.com.br/uploads/files/coin-master-free-spins-cheat_GM406889139.pdf
    • https://dribledasortegaucho.com.br/uploads/files/hack-money-pizzeria-roleplay-remastered-roblox_GM431946152.pdf
    • https://dribledasortegaucho.com.br/uploads/files/cmaster-club-coin-master-hack_GM406889139.pdf
    • https://dribledasortegaucho.com.br/uploads/files/roblox-shoes-free_GM431946152.pdf
    • https://dribledasortegaucho.com.br/uploads/files/roblox-free-meme-avatar_GM431946152.pdf
    • https://dribledasortegaucho.com.br/uploads/files/free-spins-coin-master-ios-links_GM406889139.pdf
    • https://dribledasortegaucho.com.br/uploads/files/roblox-tix-generator-download-free_GM431946152.pdf
    • https://dribledasortegaucho.com.br/uploads/files/skin-for-roblox-free-gucci_GM431946152.pdf
    • https://dribledasortegaucho.com.br/uploads/files/free-robux-come_GM431946152.pdf
    • https://dribledasortegaucho.com.br/uploads/files/get-roblox-for-free_GM431946152.pdf
    • https://dribledasortegaucho.com.br/uploads/files/free-robux-generator-for-kids_GM431946152.pdf
    • https://dribledasortegaucho.com.br/uploads/files/f3x-roblox-hack_GM431946152.pdf
    • https://www.roblox.com/.I
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031fa.bin
76279cde1d8e9a8e1c1c80608a9bac45ed95150e37e674adb96f16af76ada7a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31FA 22852 bytes
font_01_sfnt_off000064fa.bin
07e245c66c5a345c520caf39bb69f54eb012ef556822b0731c2cae9c09d33abc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64FA 19968 bytes

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