Malicious PDF — malware analysis report

Static analysis result for SHA-256 d104443a3c66c593…

MALICIOUS

PDF

46.1 KB Created: 2020-10-16 12:50:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: a2d13171e3bcedac020c4f84c074ad13 SHA-1: 32c49522b41f5516146903366c03af3da0220824 SHA-256: d104443a3c66c5939c5a47ad604d658f55bc7301f586c056ac039739ae2b8d94
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://cctraff.ru/123?keyword=tennis+clash+mod+apk+revdl In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366302/normal_5f876334aff5f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366647/normal_5f894049a0842.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368226/normal_5f879a74b5d2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367299/normal_5f875460bb08b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365601/normal_5f870153cb0d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369665/normal_5f886c002c4a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366402/normal_5f871e1ca89c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366654/normal_5f8733fea31f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366408/normal_5f8725c66d2bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366321/normal_5f89576db8704.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366993/normal_5f88c679dd00c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365659/normal_5f88a8489ba89.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368748/normal_5f8872495e428.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368976/normal_5f87f753de610.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375521/normal_5f895eaeb805e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369663/normal_5f89520e86254.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367656/normal_5f894c0604ecb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366035/normal_5f87b105804bd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/bfcf8085-09d3-495d-a238-83c313b54815/bibolajomuwurem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e203b7f-2f5a-4af0-bae0-b4554fe2b034/movefemuxeputog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bfda6a8-db12-4254-aa68-9be44a42f2c9/xobit.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006771.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6771 5096 bytes
SHA-256: f7d2d177b2f378cbc4ad14328825a68dbe9c66c528018cc2b01f9f834d2a8c22
font_01_sfnt_off00007882.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7882 11412 bytes
SHA-256: 1c361649e06df37d7a86567b65dea108be0c74eb15e78edb65e31cc68f838898
font_02_sfnt_off00009d06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D06 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

Open this report in the interactive analyzer, or submit your own file for analysis.