Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba96d94db6ff2d77…

MALICIOUS

PDF

40.4 KB Created: 2020-08-23 03:51:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fdd529ba8efd531422220786bcfa566b SHA-1: 6d38c505ea4f509b1002754808f148da741a28c8 SHA-256: ba96d94db6ff2d7732b3a544a19dd15af7d62c55fafe044cf8aa1dd6a3b3b7ca
208 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link

This PDF document contains a mass external link farm, with one critical link pointing to known malicious redirector infrastructure. The document also employs social engineering tactics, presenting itself as a fake browser security check and instructing the user to copy or paste clipboard content into a shell-like context, likely to trick them into executing a malicious command. The primary lure appears to be a fake download or security verification, leading to the malicious URL.

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • Fake browser/security check with command step high SE_FAKE_BROWSER_SECURITY_CHECK
    Document combines browser or security-check verification language with instructions to paste or run a command
  • 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
  • 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://ttraff.cc/pify?keyword=chrome+latest+version+for+ubuntu
    • http://files.josephineanimates.com/uploads/1/3/0/8/130874328/mozakaxuponasib.pdf
    • http://dekodale.clendenning.com/uploads/1/3/1/3/131398504/kitegubagik_sagudoliv.pdf
    • http://files.jeanfrankstark.com/uploads/1/3/2/6/132682303/8860886.pdf
    • https://cdn.shopify.com/s/files/1/0434/4902/4669/files/tolorodires.pdf
    • https://cdn.shopify.com/s/files/1/0436/1958/2110/files/5451947612.pdf
    • https://cdn.shopify.com/s/files/1/0449/7958/5192/files/disadvantages_of_value_chain_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0430/7147/1767/files/java_output_formatting_hackerrank.pdf
    • https://cdn.shopify.com/s/files/1/0433/9544/8997/files/iter_fusion_reactor.pdf
    • https://cdn.shopify.com/s/files/1/0429/6428/7651/files/dosolagipub.pdf
    • https://cdn.shopify.com/s/files/1/0432/7515/7670/files/introduction_to_autonomous_mobile_robots_siegwart.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jaxigosileworu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5780/6503/files/scope_creep_in_project_management.pdf
    • https://cdn.shopify.com/s/files/1/0434/2556/2791/files/95605690506.pdf
    • https://cdn.shopify.com/s/files/1/0431/6640/0663/files/memotod.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f95.bin
47b6b941bb3a4da2ddee3bccf0f4b52d08957b84676fed6e9ea387e968d13c74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F95 5112 bytes
font_01_sfnt_off000070d7.bin
95a39ef46f94396748774e31e2afc9d22d9259b6b6af1c77bdd0e3381a609bd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70D7 10648 bytes

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