Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f6993b2273c2d15…

MALICIOUS

PDF

42.2 KB Created: 2020-10-11 23:30:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: b2bdf58e441b1e2a72e4d4be51704705 SHA-1: 2b214dda6fbb755f091d27378cc491c592d9f027 SHA-256: 5f6993b2273c2d15e5caa8a0353172bdfdf1b8973a9eea208edc3911166f0b79
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://ggtraff.ru/strik?keyword=we+the+people+an+introduction+to+ame In PDF document text
    • https://site-1042009.mozfiles.com/files/1042009/24872404843.pdfIn PDF document text
    • http://xipazata.ciaranjohn.com/uploads/1/3/1/4/131409167/8e686d4cf.pdfIn PDF document text
    • http://files.rnchgrl.ca/uploads/1/3/1/3/131384374/vugugoziv.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/ed0b2c5a-64ee-4e31-93db-095d048455c5/rubimudut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7c8c68c-fd82-48c6-abd0-c4e5f5ba35e5/56515154375.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/390f00de-997d-4b8d-9ba9-8f2c23c7a1c3/93700014593.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c32f289-b859-4669-b6cf-7756e6068b45/tababazevezeko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f06d639-a94a-4206-82a9-0b925e1bf86f/4808081358.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94f10f4c-dba7-470e-9e5e-6d5690e9c146/36870043227.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_off00006867.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6867 5148 bytes
SHA-256: 5814916935ba8c824e60eb9cf67b553d541edc99deace40892d70e8b70e981c9
font_01_sfnt_off000079c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79C1 10088 bytes
SHA-256: c58860ad2878462232ec75840833aefc1b832cf025b48d8955c9c151f15c118a