Malicious PDF — malware analysis report

Static analysis result for SHA-256 5557ea4150a34f05…

MALICIOUS

PDF

120.9 KB Created: 2020-08-29 19:57:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9591a9dbcfae649ee4be5ad5e8703b69 SHA-1: af9588311335904a66371bff27af516476ed142e SHA-256: 5557ea4150a34f0521f8ec29a618b881e526d03a46861ca2247e83653e67bd6b
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, pointing to 'https://ttraff.cc/wix?keyword=examen+fisico+del+recien+nacido+enfermeria'. This indicates the document's primary purpose is to redirect users to a potentially harmful site. Another critical heuristic indicates a PDF link farm, suggesting a broad attempt to distribute malicious links. 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.cc/wix?keyword=examen+fisico+del+recien+nacido+enfermeria
    • https://cdn.shopify.com/s/files/1/0428/3331/3958/files/digital_inclusion_index_report_2019.pdf
    • https://cdn.shopify.com/s/files/1/0435/5335/7985/files/koxubu.pdf
    • https://cdn.shopify.com/s/files/1/0434/8765/8141/files/84217924125.pdf
    • https://cdn.shopify.com/s/files/1/0440/7079/7462/files/latefobelape.pdf
    • https://cdn.shopify.com/s/files/1/0469/4681/2065/files/hunger_games_comprehension_questions.pdf
    • https://cdn.shopify.com/s/files/1/0432/6568/7717/files/wonusogegulefosapomonip.pdf
    • https://cdn.shopify.com/s/files/1/0431/5555/4455/files/gardner_minshew_draft_report.pdf
    • https://cdn.shopify.com/s/files/1/0433/4521/5656/files/fejixa.pdf
    • https://cdn.shopify.com/s/files/1/0434/5797/0329/files/sorting_algorithms_python.pdf
    • https://static.usrfiles.com/ugd/b8c837_790c841af3eb47d492a26c6dea06bede.pdf
    • https://static.usrfiles.com/ugd/daca0d_91aee3fad1084fbda6a5deed5a79395c.pdf
    • https://static.usrfiles.com/ugd/b8c837_95d3cb5d56764b24be6e54d0e39ab094.pdf
    • https://static.usrfiles.com/ugd/b8c837_25f619fe66cf499da623bac0f75446b7.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_off00019cec.bin
1eafab5994cf23a8cbbc389d26f4f3ba71e369feb0f1b7f48243ff7cbd0bcf6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19CEC 5192 bytes
font_01_sfnt_off0001ae80.bin
e08cd679c8e6ba42cdb81dcc48db1907500d5c696454be62d4f2dc2b626a1c40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1AE80 11640 bytes

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