Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1d49ebf2e8b962c…

MALICIOUS

PDF

48.1 KB Created: 2020-09-03 00:48:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84333f07efdc7dde0dad27bd81d01511 SHA-1: 1fc497784d9ea61ee7fe3108be678c4f038f39a2 SHA-256: d1d49ebf2e8b962c2cbb647fb7f55584ba5ab81c0ef9c5dd819d01e769aa52ef
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, identified as a PDF link farm. One of these links, 'https://ttraff.com/wix?keyword=fairchild+power+bjt+datasheet', is flagged as a malicious redirector. The document body is heavily obfuscated but contains references to this URL and other PDF links, suggesting a lure to external, potentially 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.com/wix?keyword=fairchild+power+bjt+datasheet
    • https://static.usrfiles.com/ugd/04e6f9_46c7aec0f72742e4a1fe0925fe84d7d4.pdf
    • https://static.usrfiles.com/ugd/74e9cf_f2355dd8e87e4b858803f448262932bd.pdf
    • https://static.usrfiles.com/ugd/b8c837_023c3f9e750b484f8a16210357773a9f.pdf
    • https://cdn.shopify.com/s/files/1/0434/3365/6476/files/job_application_letter_sample_format.pdf
    • https://cdn.shopify.com/s/files/1/0444/7269/6999/files/5075306554.pdf
    • https://cdn.shopify.com/s/files/1/0434/9670/2104/files/suzilofofupiragidev.pdf
    • https://cdn.shopify.com/s/files/1/0438/0744/1053/files/septoplastia_en_nios.pdf
    • https://cdn.shopify.com/s/files/1/0431/3910/4917/files/woxesixifi.pdf
    • https://cdn.shopify.com/s/files/1/0429/2050/9596/files/sql_joins_practice_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/8649/5388/files/least_squares_matrix_calculator.pdf
    • https://cdn.shopify.com/s/files/1/0437/6107/4337/files/android_app_store_developer_login.pdf
    • https://cdn.shopify.com/s/files/1/0461/9065/7687/files/antares_harmony_engine_evo_full.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000654f.bin
21dcc9e03d8b983a3e8df15e35db19efe233a8eb811f57266c46c58459524689		 pdf-font-stream PDF embedded font (sfnt) at offset 0x654F 5628 bytes
font_01_sfnt_off000078af.bin
618ca19f377517092ab4264a428b8740c5480e015cea2cdb59873b2585aad62a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78AF 5424 bytes
font_02_sfnt_off00008b27.bin
11e3bc370d615e948360a47415430f9ee49b0a8ab5f26f3cddd28fbf82d63358		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B27 11644 bytes

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