Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cb93df87f7b4f46…

MALICIOUS

PDF

58.1 KB Created: 2020-08-29 22:43:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 97342650ee9afd970ef17e5e5dbf3143 SHA-1: 85cdd7ba4a71e341f043526aaab987d5d07fbb04 SHA-256: 8cb93df87f7b4f46adcea270e4670e82574597678ddc2cd486969d36c4ddd68d
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=how+to+turn+orajel+into+powder'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though partially corrupted, includes the same malicious URL and a benign-looking title, suggesting a lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=how+to+turn+orajel+into+powder
    • https://cdn.shopify.com/s/files/1/0433/3315/7014/files/australian_super_letter_of_compliance.pdf
    • https://cdn.shopify.com/s/files/1/0429/7401/9740/files/69107094367.pdf
    • https://cdn.shopify.com/s/files/1/0437/7968/6549/files/karya_tulis_ilmiah_tentang_bahaya_merokok_dikalangan_pelajar.pdf
    • https://cdn.shopify.com/s/files/1/0432/5058/1662/files/fetenelosasapuxadilameguf.pdf
    • https://cdn.shopify.com/s/files/1/0432/8131/8056/files/english_to_english_dictionary_oxford_intermediate_download.pdf
    • https://static.usrfiles.com/ugd/b8c837_81e9a96334a448a7875120ca777d5510.pdf
    • https://cdn.shopify.com/s/files/1/0432/8849/4236/files/edit_file_online_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/9711/2219/files/critical_race_theory_3rd_edition.pdf
    • https://static.usrfiles.com/ugd/2f8cea_3f843dba19f74f2daf89bbd6943d5853.pdf
    • https://static.usrfiles.com/ugd/b8c837_bab90a2c16934972befaab0793c90418.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_off00008a26.bin
c23fa7fbf041813f6c91280bf8915571b89e1e0794958a7cfa4aa6ea8935c78a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A26 4788 bytes
font_01_sfnt_off00009a85.bin
074314723b49e90f9a5b9e29f48f5eabfc32d8113097e1303a92f32a39ece837		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A85 16620 bytes
font_02_sfnt_off0000ce23.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCE23 4324 bytes

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