Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6a786e81af2cd1b…

MALICIOUS

PDF

39.2 KB Created: 2020-08-08 21:18:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2255cacfed5cc932687c09284a5349f SHA-1: af05e094052b16db8976c37e2400b823f875d83f SHA-256: c6a786e81af2cd1b9084ff7a0f4cfeca424132562e4eb8a4cacc21ab87e3dae0
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that is disguised as a download for 'The Economist' magazine. The ML classifier strongly indicated maliciousness. The document body and embedded link structure suggest a phishing or social engineering lure to redirect the user to potentially harmful content.

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.ru/pify?keyword=the+economist+july+7+2020+pdf+download
    • http://files.pattidunne.com/uploads/1/3/0/9/130969764/4934665.pdf
    • http://files.ntspruikle.com/uploads/1/3/1/3/131380591/678d88743e347ea.pdf
    • http://files.syxgems.net/uploads/1/3/0/7/130776206/nubatiwilofa_jamavenefazibip_mixagipebokaku_savewunoforipad.pdf
    • https://cdn.shopify.com/s/files/1/0437/6995/4456/files/games_for_teaching_vocabulary_in_the_classroom.pdf
    • https://cdn.shopify.com/s/files/1/0432/7954/8580/files/vikebejod.pdf
    • https://cdn.shopify.com/s/files/1/0427/5906/1670/files/89705618746.pdf
    • https://cdn.shopify.com/s/files/1/0432/7702/5446/files/89018441459.pdf
    • https://cdn.shopify.com/s/files/1/0430/3332/9817/files/70895004563.pdf
    • https://cdn.shopify.com/s/files/1/0428/9029/7507/files/94736198685.pdf
    • https://cdn.shopify.com/s/files/1/0430/4207/8877/files/zunilemilifowovo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8684/7903/files/error_assignment_to_expression_with_array_type.pdf
    • https://cdn.shopify.com/s/files/1/0431/2216/3876/files/powopasotekemitifel.pdf
    • https://cdn.shopify.com/s/files/1/0434/6331/1520/files/12668537771.pdf
    • https://cdn.shopify.com/s/files/1/0434/0118/3397/files/physical_therapist_assistant_exam_review_guide.pdf
    • https://cdn.shopify.com/s/files/1/0439/4034/8059/files/word_count_in_r.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_off00004bbc.bin
c7b69ff3c2338818a8377ea544fea1076324ac84188824336e3c608f4b1725ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BBC 5756 bytes
font_01_sfnt_off00005f37.bin
2482521df2b9a21a72907f5ce2d45ee3a4754b1ed21966431bdf3978bf5d7067		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F37 9976 bytes
font_02_sfnt_off00008166.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8166 4324 bytes

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