Malicious PDF — malware analysis report

Static analysis result for SHA-256 540b125792ad0a75…

MALICIOUS

PDF

44.1 KB Created: 2020-08-08 18:25:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 847557c327152394eb0f96a3563a6a6f SHA-1: b77d43c11b722d0c9c15075227188682d0f5e769 SHA-256: 540b125792ad0a7528c0306498dbd849c25d2c2f772536a1ae79b68416dbf1b2
120 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a link farm, embedding a large number of external links. One of the primary links, 'https://ttraff.ru/pify?keyword=check+your+english+vocabulary+for+ielts+rawdon+wyatt+pdf', is identified as a malicious redirector. The document body contains garbled text and embedded URLs, further supporting the malicious intent of redirecting users to potentially harmful sites.

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=check+your+english+vocabulary+for+ielts+rawdon+wyatt+pdf
    • http://files.foodforlife.biz/uploads/1/3/2/6/132695493/ludilariredu.pdf
    • http://files.dragonfliempire.com/uploads/1/3/1/3/131383924/8930065.pdf
    • http://laputapo.essentialsspapasadena.com/uploads/1/3/1/4/131483281/redoseparobukoj.pdf
    • http://files.fordjudoclub.org/uploads/1/3/2/7/132740905/masimebusizivo.pdf
    • http://files.aaronsweed.com/uploads/1/3/1/3/131383630/masugafomoguje.pdf
    • https://cdn.shopify.com/s/files/1/0439/6072/9758/files/r._e._m._albums.pdf
    • https://cdn.shopify.com/s/files/1/0450/8313/2056/files/windows_xp_professional_iso.pdf
    • https://cdn.shopify.com/s/files/1/0434/6429/4557/files/11638810732.pdf
    • https://cdn.shopify.com/s/files/1/0435/4270/8378/files/sublime_sublime_album_download_zip.pdf
    • https://cdn.shopify.com/s/files/1/0438/3630/9666/files/65865257328.pdf
    • https://cdn.shopify.com/s/files/1/0431/6348/4315/files/dozekijefubavopif.pdf
    • https://cdn.shopify.com/s/files/1/0431/0440/3613/files/1836202812.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gozoba.pdf
    • https://cdn.shopify.com/s/files/1/0435/5152/2977/files/81646941445.pdf
    • https://cdn.shopify.com/s/files/1/0431/5817/5893/files/65230084789.pdf
    • https://cdn.shopify.com/s/files/1/0430/9496/6436/files/55279640937.pdf
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/1998_honda_civic_ex_coupe.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_off00006164.bin
8aaac796ba1225670b57e6c6b6ca3387b2bebb4409b741af4788361b0963b698		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6164 5780 bytes
font_01_sfnt_off00007529.bin
4c0ddc0e04c71cbb656adae5c2d2b0a7bade160d59d89a25dee5ce5b59c27c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7529 14740 bytes

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