Malicious PDF — malware analysis report

Static analysis result for SHA-256 4620d6668eb43410…

MALICIOUS

PDF

48.8 KB Created: 2020-07-24 15:55:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 50475547eb1da6a409fa3526993be3b6 SHA-1: 8578bba9a94dac27d92c08eb8f4bcde4246ec19b SHA-256: 4620d6668eb43410462981f0a2304c18df104e43eb0714218fab3bd599c1bb44
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The document body, though heavily obfuscated, appears to reference 'Minecraft 1.14.4', likely as a lure to attract users to click on the malicious links. The primary heuristic firings indicate the PDF is a malicious redirector and a link farm.

Heuristics 3

  • 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.
  • 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.ru/pify?keyword=minecraft++1.+14.+4
    • http://files.sjjmc.org/uploads/1/3/1/4/131412235/7525929.pdf
    • http://files.eartharkbotswana.com/uploads/1/3/1/3/131380295/sukepafusuzejexexuta.pdf
    • http://files.sunshinehx.org/uploads/1/3/0/8/130874370/jogosafanoku_vomenubezepi_tubewu_gorigepulid.pdf
    • http://files.robesondwicourt.com/uploads/1/3/1/8/131856539/futoro.pdf
    • http://files.grassingtondevonshireinstitute.org/uploads/1/3/1/4/131437161/b310fedc22d9ef0.pdf
    • https://cdn.shopify.com/s/files/1/0431/0371/5489/files/2905117537.pdf
    • https://cdn.shopify.com/s/files/1/0433/2634/1272/files/zisonozolup.pdf
    • https://cdn.shopify.com/s/files/1/0431/5598/0445/files/51554343969.pdf
    • https://cdn.shopify.com/s/files/1/0428/9452/4579/files/35848277957.pdf
    • https://cdn.shopify.com/s/files/1/0429/4914/8828/files/79600790049.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/41517754230.pdf
    • https://cdn.shopify.com/s/files/1/0433/0107/7142/files/suwaruzol.pdf
    • https://cdn.shopify.com/s/files/1/0434/1402/8444/files/todep.pdf
    • https://cdn.shopify.com/s/files/1/0430/6590/1210/files/sorajamotupativaluvomegid.pdf
    • https://cdn.shopify.com/s/files/1/0431/7931/1268/files/64203602596.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41877136991.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_off00008393.bin
216fe2bc727d1baa70d41d1dd1e19ea93867afc8e290f8d68b2ba522bd649355		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8393 4520 bytes
font_01_sfnt_off000092f7.bin
ae0840ba3b8a887aac003e84994686bf269eec046399b7e94b33a16764311359		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92F7 10272 bytes

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