Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ad19b93e5ca8923…

MALICIOUS

PDF

44.5 KB Created: 2020-11-04 05:50:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: f3d4b318f28b7fc61ea6591e9394308c SHA-1: 91439381c7d37a0eb7e313d596eac100bd745a1a SHA-256: 9ad19b93e5ca8923bafac192e16ca585c1df36510e09f8db5f3458f9af4d3f59
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://ttraff.me/123?keyword=2018+dodge+charger+v8+gas+mileage In PDF document text
    • https://zavisedifigi.weebly.com/uploads/1/3/4/3/134316550/jowowedigipig.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/d1f3b359-f867-448d-af4c-063aa856964e/46804852934.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69635816-c84e-4054-8318-be55493fb4b2/78713172573.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/free_offline_to_word_converter_software_download.pdfIn PDF document text
    • https://s3.amazonaws.com/nabifovu/20414576912.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4e5ab0c-d73d-4438-aee8-9d3a7d3a8582/10_apsley_way_worthing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bc03ef0-5aba-4785-95be-8eda9782054a/texukebe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25faf805-304d-4afe-9fc3-561499f6f6c0/76921780865.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cd8cc33-899f-4f62-8bb1-4572d7ef202d/88431632720.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/038842ea-b532-47fb-8405-f6612ca3991a/gikakijirisezo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f6cc2f6-c0e2-4b29-b78e-42354d533c8b/53840498918.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_off00006cc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC6 5836 bytes
SHA-256: eda0b2e17fc8b6a7b31ea4ab87c78f1095764803be38164e10ffbf6b42bdb9d9
font_01_sfnt_off00008085.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8085 10700 bytes
SHA-256: 90f6e16e926e101d3a62492bfc39c20a612dc69194fa72f2264b8fc2f27343d5