Malicious PDF — malware analysis report

Static analysis result for SHA-256 83a2ce2a9c4b4044…

MALICIOUS

PDF

46.9 KB Created: 2020-08-25 18:24:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 732fbd2842854611c46efdc54263b57d SHA-1: 99fda43b9489908187cdc51f12e8281e7ba007a5 SHA-256: 83a2ce2a9c4b4044c4b20faa818675e1eb7036ebd36d346f3cc3817ef66bc7f7
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many hosted on cdn.shopify.com. The primary malicious URL identified is https://ttraff.com/pify?keyword=%25C3%25A9nergie+potentielle+de+pesanteur+for. The document body is heavily obfuscated and appears to contain embedded URLs, further supporting the malicious redirector and link farm findings.

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.com/pify?keyword=%25C3%25A9nergie+potentielle+de+pesanteur+for
    • http://files.councillorpetrie.com/uploads/1/3/1/8/131856757/3fadba23b664457.pdf
    • https://cdn.shopify.com/s/files/1/0434/6331/1512/files/67345219528.pdf
    • https://cdn.shopify.com/s/files/1/0435/6869/3407/files/zutomupuwera.pdf
    • https://cdn.shopify.com/s/files/1/0431/7102/0960/files/61347820171.pdf
    • https://cdn.shopify.com/s/files/1/0432/8115/4198/files/wijazatilefojovejid.pdf
    • https://cdn.shopify.com/s/files/1/0440/7332/0600/files/13575919348.pdf
    • https://cdn.shopify.com/s/files/1/0437/9515/3058/files/25963065233.pdf
    • https://cdn.shopify.com/s/files/1/0432/9717/7768/files/4555106211.pdf
    • https://cdn.shopify.com/s/files/1/0440/4533/6726/files/39010775882.pdf
    • https://cdn.shopify.com/s/files/1/0437/8047/2984/files/xazirodusezig.pdf
    • https://cdn.shopify.com/s/files/1/0438/5567/5552/files/analyse_de_la_boite_a_merveilles.pdf
    • https://cdn.shopify.com/s/files/1/0431/3897/3857/files/severity_of_alcohol_dependence_questionnaire.pdf
    • https://cdn.shopify.com/s/files/1/0437/0569/6409/files/bioethics_syllabus.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_off00005ef6.bin
bb62120c128f4615302050f1ec166a361ac8f51341ac770f08393cb02efdc746		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EF6 5188 bytes
font_01_sfnt_off000070a8.bin
640ea67f578082a69a5575b696414ecff973b8cda528768d5f600fd70124aca9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70A8 12148 bytes
font_02_sfnt_off00009790.bin
c6ba0de63f29dbd7273d64473ad43319adae6b398603b28f9e90f3051d96a0e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9790 16060 bytes

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