Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dd84596e44ad7b9…

MALICIOUS

PDF

35.3 KB Created: 2021-06-30 16:43:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 52eb53a6478d0bc0499a650d9938e699 SHA-1: f798f6e4333673c8b91d30fae3a1896269940270 SHA-256: 2dd84596e44ad7b9396c9850e013e8d804bcda71fd2c53f463134589934805e8
122 Risk Score

Malware Insights

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

This PDF document is designed to trick users into downloading malicious content by posing as a guide for game hacks and free currency. It contains a large number of external links, many pointing to other PDFs hosted on an IP address, forming a link farm intended to attract users through SEO. The ML classifier strongly indicated maliciousness, and the presence of numerous suspicious URLs reinforces this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/roblox-script-hack-get-everything-game-hack PDF link annotation
    • http://183.91.70.11/repository/how-to-generate-free-coin-master-spin_GM406889139.pdfPDF link annotation
    • http://183.91.70.11/repository/free-roblox-cards-numbers_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/hacked-client-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://183.91.70.11/repository/roblox-microsoft-rewards_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/how-do-u-hack-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/robux-free-codes-2021_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/roblox-gift-card-free-codes_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/free-robux-method-that-still-works_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/how-to-use-a-hack-script-in-roblox-pet-simulator_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/infinte-moneuz-roblox-injector-hack_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/roblox-phantom-forces-pepsis-aimbot-hack-2021_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/how-to-hack-roblox-wanted_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/free-aesthetic-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/how-to-get-gamepasses-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/youtude-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/100-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://183.91.70.11/repository/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/minecraft-hacks-115-2_GM479516143.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
font_00_sfnt_off000031bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31BB 22304 bytes
SHA-256: aff060a9e56f9c297bd3971329051b83b7c2cc8361fb70313167dda1a495c743
font_01_sfnt_off00006373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6373 19516 bytes
SHA-256: 38c1618c13799d70d418d580116ca887f9ed522b48244c6ff34b76a0484ed88c

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