Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc5dc597e9ae0130…

MALICIOUS

PDF

41.7 KB Created: 2020-09-01 00:43:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d7a0e81a3932c9224ebcc7be1f37fea SHA-1: 68d0d8eeff962ead5321d32ee77fadd01d445b0b SHA-256: dc5dc597e9ae013045b7896508a99e75164f6f71e7f1c348d94e22f147183c79
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/wix?keyword=centering+sheet+renting+services'. It also contains a PDF link farm heuristic, indicating a large number of outbound links, many of which point to Shopify domains. The document body text, though partially corrupted, includes the same keyword as the malicious URL, suggesting a lure. 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=centering+sheet+renting+services
    • https://static.usrfiles.com/ugd/b8c837_a74d808dac63411ea3ef6ff300adb457.pdf
    • https://static.usrfiles.com/ugd/b8c837_0f676f4ff3d146058fef31fa5db7fc70.pdf
    • https://static.usrfiles.com/ugd/a76634_447aa6bd86c1463db96fbefde7f48276.pdf
    • https://cdn.shopify.com/s/files/1/0435/9369/5391/files/golds_gym_stride_trainer_300_specs.pdf
    • https://cdn.shopify.com/s/files/1/0441/1283/8808/files/41876359776.pdf
    • https://cdn.shopify.com/s/files/1/0440/0034/6270/files/70178419384.pdf
    • https://cdn.shopify.com/s/files/1/0430/1458/6517/files/86197549809.pdf
    • https://cdn.shopify.com/s/files/1/0437/5350/4917/files/49738405510.pdf
    • https://cdn.shopify.com/s/files/1/0436/4071/7472/files/break_dance_videos_mp4_2017.pdf
    • https://cdn.shopify.com/s/files/1/0432/0264/2075/files/98661814709.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_off00005c22.bin
fe970e1da333e5544a87121f6c3211846a52f530903937d70af7e055130b1f4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C22 4784 bytes
font_01_sfnt_off00006c73.bin
5d6d16f4e7d3eb0144529fa5f98e5f7a679e7eb86db852a12bed78ad2a062bf3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C73 14824 bytes

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