Malicious PDF — malware analysis report

Static analysis result for SHA-256 d87fbce6f6c08978…

MALICIOUS

PDF

36.6 KB Created: 2020-08-04 10:10:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e23676d0ead7b22c1d4a2e8c3ec3d07 SHA-1: 36494f5e04916632a646b749c425902691749860 SHA-256: d87fbce6f6c089784ea543c06ba956bf5680f61dbe3eca3d30dbfe7061f1db46
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically `https://ttraff.cc/pify?keyword=the+economist+23rd+march+2020+pdf`. This indicates the document's primary purpose is to redirect the user to a malicious site. Additionally, the PDF was identified as a link farm, suggesting a broad distribution attempt. The document body, though heavily obfuscated, contains references to 'The economist' and a date, likely part of a social engineering lure.

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.cc/pify?keyword=the+economist+23rd+march+2020+pdf
    • http://files.re-mortgagemyhouse.co.uk/uploads/1/3/1/4/131408017/5f8912acb788.pdf
    • http://files.tripsandtours.com.ar/uploads/1/3/2/7/132740375/lirafo.pdf
    • http://files.fritzpolzer.com/uploads/1/3/0/8/130874400/befawawub-mosejilonor.pdf
    • http://files.caprocktrading.com/uploads/1/3/1/4/131453097/e679903ec3.pdf
    • https://cdn.shopify.com/s/files/1/0428/0870/5187/files/pmp_flashcards_5th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0440/6041/0006/files/39477572778.pdf
    • https://cdn.shopify.com/s/files/1/0430/6763/7917/files/79312572315.pdf
    • https://cdn.shopify.com/s/files/1/0432/4537/1549/files/circumference_of_a_circle_word_problems_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0436/1512/5662/files/vajolijete.pdf
    • https://cdn.shopify.com/s/files/1/0430/4273/4237/files/5271393837.pdf
    • https://cdn.shopify.com/s/files/1/0435/3087/9136/files/august_2020_calendar_cute.pdf
    • https://cdn.shopify.com/s/files/1/0428/0755/8310/files/vamizeroki.pdf
    • https://cdn.shopify.com/s/files/1/0430/8772/4704/files/niwegoxovuvutat.pdf
    • https://cdn.shopify.com/s/files/1/0432/3459/0888/files/smartparts_ion_manual.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_off00004fc2.bin
99fa41f324ef51d6e18f7a00642e3dacc2f0ff3c8fe6e07715580711dbf09839		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FC2 5752 bytes
font_01_sfnt_off00006324.bin
2f12c38330189fa1de1d47d1d29b540f368c49c44975d1f8a9ad6bd127421d40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6324 10148 bytes

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