Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbab9ef7812741fe…

MALICIOUS

PDF

32.1 KB Created: 2020-09-01 17:36:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 444c8e6fc26fcc9440d9968ff73ea22b SHA-1: 4f33c890db4f5556b4e87da184cea21644e058fb SHA-256: dbab9ef7812741fe64893be79f66d5c82d8199408b7b831c12b45c45d974a4e6
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=tv+guide+brisbane+10'. This URL is presented within the document body, disguised as a TV guide, suggesting a social engineering lure to entice users to click. The PDF also exhibits characteristics of a link farm, with numerous embedded links, many of which point to Shopify-hosted PDFs. 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.me/wix?keyword=tv+guide+brisbane+10
    • https://cdn.shopify.com/s/files/1/0437/6592/3992/files/baghban_song_djjohal.pdf
    • https://cdn.shopify.com/s/files/1/0432/1283/2932/files/fuzuniwebaxutagivizo.pdf
    • https://cdn.shopify.com/s/files/1/0437/9269/5458/files/38717172583.pdf
    • https://cdn.shopify.com/s/files/1/0435/6400/7583/files/19925411067.pdf
    • https://cdn.shopify.com/s/files/1/0439/4090/5128/files/kidney_function_test_parameters.pdf
    • https://cdn.shopify.com/s/files/1/0436/5765/8521/files/bcd_adder_truth_table.pdf
    • https://cdn.shopify.com/s/files/1/0433/5471/8358/files/admin_assistant_interview_questions.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/18983443830.pdf
    • https://static.usrfiles.com/ugd/b8c837_3960b0e47166470a835d2421d50ee26f.pdf
    • https://static.usrfiles.com/ugd/b8c837_04709d29d7f440bb9faddb0415b5f13f.pdf
    • https://static.usrfiles.com/ugd/2f7815_c3295e5cfa014f9b9f899ba6ae258478.pdf
    • https://static.usrfiles.com/ugd/b8c837_dca6ca4fdd294ad1afac36aad4b7c27e.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_off000040d4.bin
b12b9a4255252d661abe4997833df902b413517b9f47b3486b10d0196d8efdca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x40D4 5304 bytes
font_01_sfnt_off000052f4.bin
6956f187a31f4c7cd77be1b8094e05a2a1ffcc1c372a1bd51210577647f4f6f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52F4 9740 bytes

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