Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bcf82c646c14efa…

MALICIOUS

PDF

58.2 KB Created: 2020-11-06 20:42:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: bd4e78ccaf509f26b9bc45dbe695022c SHA-1: fd2a43759a65c349ee60564920e59879bf4f57c7 SHA-256: 5bcf82c646c14efaacc2cc016ef9a21528267197564d7ff5c41f466f93239eaa
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafftec.ru/aws?keyword=map+of+fort+harrison+mt PDF link annotation
    • https://kuzaloxamuw.weebly.com/uploads/1/3/1/4/131406684/bigasewuje_rovir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389797/normal_5f99f63291e52.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369179/normal_5f95e58897be5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://jegejiv.files.wordpress.com/2020/11/96780177211.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a6ac512-f756-4c69-be81-b9ed01ff77fa/printable_1040ez_form_2015.pdfIn PDF document text
    • https://kajebevomota.files.wordpress.com/2020/11/56235423602.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00bb8666-49bc-4f08-8016-91132f2a498d/anexo_leiruk_el_chacal_disco_complet.pdfIn PDF document text
    • https://wupomasaxo.files.wordpress.com/2020/11/triase_rumah_sakit.pdfIn PDF document text
    • https://notazit.files.wordpress.com/2020/11/20037331592.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a03da131-d67d-4240-ac17-68ac59519aa2/81519985045.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a79b78c-255f-42dc-a677-ad7bf04e2d42/38665210032.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ef8c2f6-91e2-40c9-9ac4-14fa83dd40f5/bumblestripe_and_dovewing.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a654.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA654 5112 bytes
SHA-256: d6204472b32e7692a44e88a7c5f8fed3bf41be32c8c15bc6539f6a2c1e2d49c7
font_01_sfnt_off0000b79e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB79E 10708 bytes
SHA-256: 646efd548fa40b71715c72abc413145e6607a0ec0ff1f1588878afd2db486fff