Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6d13fd0a8fc7cea…

MALICIOUS

PDF

39.2 KB Created: 2020-09-30 03:14:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: fff0a59f9ba8d6ca8649d1b9597fbd80 SHA-1: 672e9868782058712049b0fa4a08670bd7bc0ca9 SHA-256: d6d13fd0a8fc7ceadf7dca1d50d59ddccc8114aef9548196e01c872b11ed7608
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://gettraff.ru/strik?keyword=branham+messages+pdf In PDF document text
    • http://files.rbigroup.biz/uploads/1/3/0/7/130776573/8493029.pdfIn PDF document text
    • http://files.megadryforce.com/uploads/1/3/0/7/130740566/103f7a7833.pdfIn PDF document text
    • http://rabura.amplifiedmobiledj.com/uploads/1/3/1/4/131483067/romiguliw-mireli.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80084587067.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/6926/0184/files/teologia_sistematica_wayne_grudem_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6187/0741/files/xapire.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87fc092d-ea38-44e5-8e23-49b1b09f0424/86378256168.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f116d0ca-8140-4ee2-bf3b-48f21566441e/64605206851.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fba35cd5-e4ff-4d5b-b7d9-2530b24d0696/60488035928.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27a4d4d7-a4e5-4900-b664-0c90afbfa6f8/41996264880.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fee167c-0e7b-46c2-b679-56e5643b5476/voxovemofodor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea10949d-5749-4cc1-9f42-a4c27022f11b/55248637683.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d2cdfc0-6344-4ff6-ba3a-39cb479d2822/xorivoba.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_off0000591b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x591B 5472 bytes
SHA-256: e9baaa874fcf0fe91d737bb7cef8068c8345d41a6b35e4743dcecc6c1c62b27e
font_01_sfnt_off00006b8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B8F 10864 bytes
SHA-256: fde1fe10e8dd9e1b65d4753e61083ca5d28653743e851c975e8aa2a53012c667