Malicious PDF — malware analysis report

Static analysis result for SHA-256 e703a55cef4677be…

MALICIOUS

PDF

33.8 KB Created: 2020-10-04 14:05:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: f70ce1dd58281575d6aff7bd90164957 SHA-1: 0bd482bfdfd53e163cec95adc035ccfa8dfe2d7b SHA-256: e703a55cef4677be6e201be7158ad5712099b4e05a575e9e6180e9c9778d974e
152 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://gettraff.ru/strik?keyword=plex+pass+crack In PDF document text
    • https://site-1037881.mozfiles.com/files/1037881/nimelunafu.pdfIn PDF document text
    • https://site-1040764.mozfiles.com/files/1040764/lodolazazif.pdfIn PDF document text
    • https://site-1039566.mozfiles.com/files/1039566/rabiwufibogameroxuboka.pdfIn PDF document text
    • https://site-1036665.mozfiles.com/files/1036665/migawefenomenezep.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d570a2b4-f336-483e-b0fe-eb8fec510745/liruwenakomijegafuluso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d1bf9dd-c777-435b-9d80-2a6e89c0d71c/70402808183.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97654a1e-3ba3-49ec-bdaa-6bcf3e864abb/turevevepukudefagijanonof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce01189e-5be0-4e29-b53c-2e1e6876d56a/zozewodi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41a709a5-554e-45d0-8942-e2dc3db2168c/65918716408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2477/9933/files/jumbo_wrench_set_canada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/5400/6182/files/profoundly_me_reveal_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30e2728c-8342-4866-ae19-fc162febe28d/71414914614.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7476f503-e784-4dc2-b678-52154a06472d/15322384084.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57534f66-be69-47d5-a751-d16560617c2a/18342582681.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F30 5060 bytes
SHA-256: daf6f856ab1f071fbea4c7e20a62b84c28b59448492b27855472a3083aa8f582

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