Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c59d0b77a725c37…

MALICIOUS

PDF

38.6 KB Created: 2020-08-29 03:38:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6fc0a9607468f629a1eb896af1c24e37 SHA-1: 0070099c58ddf3f761964264abcf542ede5a18a2 SHA-256: 3c59d0b77a725c3706f35b2186a7e4c089b2d9a036e608382c9edad0dac8211a
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/wix?keyword=Rakenna+oma+vinssipuskuri', which is flagged as malicious. The presence of numerous other PDF links suggests a link farm or redirection strategy. No scripts were extracted from this sample.

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.cc/wix?keyword=Rakenna+oma+vinssipuskuri
    • https://cdn.shopify.com/s/files/1/0434/2746/3324/files/mafoxoziwisuweduforew.pdf
    • https://cdn.shopify.com/s/files/1/0433/7949/0968/files/kibopikesagadifiwunutafe.pdf
    • https://cdn.shopify.com/s/files/1/0457/6103/6444/files/13_reason_why.pdf
    • https://cdn.shopify.com/s/files/1/0431/5768/4375/files/oracle_client_for_mac.pdf
    • https://cdn.shopify.com/s/files/1/0431/3609/0269/files/centrosema_pascuorum.pdf
    • https://static.usrfiles.com/ugd/b8c837_898318298de747caa572e11760cbf343.pdf
    • https://static.usrfiles.com/ugd/b8c837_6d956ce77f8b44fa80c665f0e1b82399.pdf
    • https://static.usrfiles.com/ugd/b8c837_632b364a7a88422b98969ff5ccf9022e.pdf
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/dutujad.pdf
    • https://cdn.shopify.com/s/files/1/0428/5107/4214/files/odisha_map_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/7485095273.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_off0000595b.bin
4e4adb21cc7375ad01455ff2d05acda618b800905753954c2550bd7043c3d49c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x595B 5064 bytes
font_01_sfnt_off00006a89.bin
4237819f41ac3fbcbfb93a1c5d2838729b7600faed3f9066cd844d9775a9481b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A89 10256 bytes

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