Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b6c227bd99a0003…

MALICIOUS

PDF

52.9 KB Created: 2020-08-30 03:26:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81de71008ff0c2702c8879f0b1b6c657 SHA-1: 9b3f6501f78e932a0d3b0fbab171ef98df0de38d SHA-256: 9b6c227bd99a00034e656d18967d697509d31d62bacc177fe582fa041b9edff3
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating a link to known malicious infrastructure. Additionally, PDF_SEO_LINK_FARM indicates a large number of external links, suggesting a link farm for SEO manipulation. The embedded URL https://ttraff.com/wix?keyword=civco+needle+guides is identified as a malicious redirector. 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.com/wix?keyword=civco+needle+guides
    • https://static.usrfiles.com/ugd/b8c837_26bb621c7d8248298c8faafd44e75198.pdf
    • https://static.usrfiles.com/ugd/b8c837_3003a8fbfa364b62989e451aa61fb442.pdf
    • https://static.usrfiles.com/ugd/de65f7_384830fa91fa4636802eace6279fb900.pdf
    • https://static.usrfiles.com/ugd/b8c837_3ce0d02bfa7b458f835fcdb7f067e073.pdf
    • https://static.usrfiles.com/ugd/1a89c8_226b54ec24a148b9863ca7e1f01a3212.pdf
    • https://static.usrfiles.com/ugd/b8c837_87d4afba8bcf4aff8f54b9396dfdaab7.pdf
    • https://cdn.shopify.com/s/files/1/0435/5116/2523/files/half_wave_rectifier_physics_project.pdf
    • https://cdn.shopify.com/s/files/1/0429/9853/0201/files/scratch_2_games.pdf
    • https://cdn.shopify.com/s/files/1/0437/1247/9382/files/gabofoxelujudapikatofe.pdf
    • https://cdn.shopify.com/s/files/1/0435/6918/4931/files/p_e_t_a_full_form.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_off0000873b.bin
3a319f19e7de0114615afd13b14c1516493311a24a00b8e66165dfae70923107		 pdf-font-stream PDF embedded font (sfnt) at offset 0x873B 4764 bytes
font_01_sfnt_off00009785.bin
36772ef57b46b2198af46ed2e90cec5ce5324e8cb749be46b83177f1d3cb2a7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9785 15304 bytes

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