Malicious PDF — malware analysis report

Static analysis result for SHA-256 282c716f5fc2c30f…

MALICIOUS

PDF

40.1 KB Created: 2020-08-31 00:10:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a4733293c22780578afaaa83fcb8855 SHA-1: a420a59a3be92ec8c250d85161a02fb6ed1cd912 SHA-256: 282c716f5fc2c30f969cbbd4625c544576fe7ce1f9eb601de7718eef42343f83
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. The document body, though heavily obfuscated, also contains this URL and numerous other links hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The primary intent appears to be directing users to the malicious redirector.

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=g%25C3%25BCnstige+high-fashion+kleider
    • https://cdn.shopify.com/s/files/1/0431/9815/2866/files/devexpress_report_viewer_asp._net_core.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/serivekugunowinekixunotin.pdf
    • https://cdn.shopify.com/s/files/1/0434/2857/7447/files/45539912201.pdf
    • https://cdn.shopify.com/s/files/1/0437/4944/1688/files/cambridge_primary_progression_test_past_papers_english_stage_4.pdf
    • https://cdn.shopify.com/s/files/1/0437/9443/2161/files/57439336428.pdf
    • https://cdn.shopify.com/s/files/1/0429/7208/6423/files/67153088205.pdf
    • https://cdn.shopify.com/s/files/1/0436/6431/0425/files/kendo_grid_checkbox_template_value.pdf
    • https://cdn.shopify.com/s/files/1/0434/3866/9976/files/gojijel.pdf
    • https://cdn.shopify.com/s/files/1/0437/2781/4810/files/kayaking_merit_badge_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/0747/5875/files/rowujiwevekisiwosumujemev.pdf
    • https://static.usrfiles.com/ugd/07625c_19146dffcadb4dcbb29e148777a41c3f.pdf
    • https://static.usrfiles.com/ugd/77d535_a126fdced48e4c349ade398bea90e6e1.pdf
    • https://static.usrfiles.com/ugd/15cd4d_05d99776667b4f4e8c0834cbda4a8caf.pdf
    • https://static.usrfiles.com/ugd/a1fb72_4b0ec59ba17f4722be7be75a8b2bb154.pdf
    • https://static.usrfiles.com/ugd/b8c837_ba607913a8904a358d37d38dc01a3227.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_off00005b47.bin
3d753c8201ec2d60a36e542d1b5601b0cb874120b37b8c2be3fe052c8a1f4dbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B47 5416 bytes
font_01_sfnt_off00006d81.bin
0c5cb43111c4ec96282611da5936fe12a6c139acd8fa2daf6af6ed904ce7be15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D81 11020 bytes

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