Malicious PDF — malware analysis report

Static analysis result for SHA-256 96157688a34e01cd…

MALICIOUS

PDF

42.8 KB Created: 2020-08-30 00:20:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40338c5b9830e1e8be6893d7c535f1b4 SHA-1: 173343f88d35969f0401410c71ef4cd0bc1c6f6a SHA-256: 96157688a34e01cdf2c364cde6eadb28bdcf4bd22d09b67ffc2ccadc856ffec5
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.link/wix?keyword=manual+cardo+scala+rider+q3+espa%25C3%25B1ol', is designed to lure users to a malicious site. The document also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic to distribute the malicious content.

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.link/wix?keyword=manual+cardo+scala+rider+q3+espa%25C3%25B1ol
    • https://cdn.shopify.com/s/files/1/0438/6314/6656/files/bixizudukujipufer.pdf
    • https://cdn.shopify.com/s/files/1/0440/0853/8262/files/49339459625.pdf
    • https://cdn.shopify.com/s/files/1/0431/4261/1095/files/biology_11th_ncert_book.pdf
    • https://cdn.shopify.com/s/files/1/0438/4836/8288/files/45189208347.pdf
    • https://static.usrfiles.com/ugd/b88e3d_b71e213a3fef46c890af44a5d6a79f2f.pdf
    • https://static.usrfiles.com/ugd/d5415a_0093dbf86dfb453fafb597b98b744d44.pdf
    • https://static.usrfiles.com/ugd/e4ff69_183fe7ae2833415ea7a79bea2eaa77c3.pdf
    • https://static.usrfiles.com/ugd/b8c837_89b0327fe74e416990a6dc0013402122.pdf
    • https://static.usrfiles.com/ugd/ca300b_e228720005e74d11ac8906d395ce1199.pdf
    • https://static.usrfiles.com/ugd/b8c837_e57810900aa64e4c94ebf406672e2a70.pdf
    • https://static.usrfiles.com/ugd/6c98bc_5e2c6a7780084a47906a24a98ef1adb6.pdf
    • https://cdn.shopify.com/s/files/1/0432/6978/3720/files/73182975529.pdf
    • https://cdn.shopify.com/s/files/1/0435/3179/6632/files/acidosis_tubular_renal_distal_tipo_1.pdf
    • https://cdn.shopify.com/s/files/1/0427/9212/4572/files/gerarujewujitesil.pdf
    • https://cdn.shopify.com/s/files/1/0437/1768/9512/files/gmat_practice_test_questions_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0434/3421/3542/files/advanced_vocabulary_test_with_answers.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_off00006524.bin
b46da7e715ca3c0d93f436ec9cb20cedb31d8efbd5d3a2bf6623c0d4f9fd0c52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6524 5576 bytes
font_01_sfnt_off000077df.bin
9b1d05702e47395ca0b69e62d98e9bd3f4dc09412afd11ab71f0fe745aa5e8d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77DF 10480 bytes

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