Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c7699b24a355fcb…

MALICIOUS

PDF

40.7 KB Created: 2020-11-07 19:08:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: c046f006698905bd257fe570c0f3f736 SHA-1: c15980df992dca530b6d79304ebfce80a7bf3184 SHA-256: 5c7699b24a355fcbe877dd551e33e966535d7169e1508ae8cc5512b06d3cb30d
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://traffking.ru/123?keyword=introductory+element+words In PDF document text
    • https://cdn-cms.f-static.net/uploads/4451368/normal_5fa5e93ae7d59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452382/normal_5f9fc7954f2f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374696/normal_5f9178d3c757e.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/3bbd31c3-5da4-47ce-abb3-966b2f4c0483/linos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57e0c1bc-33f3-44d1-9203-8e4d82e8948e/96373140345.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1ea9154-f24b-402c-888a-7902e8c0fe0d/40960761848.pdfIn PDF document text
    • https://notazit.files.wordpress.com/2020/11/76591847690.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11c911a7-41bd-4649-b841-ed65a8d8d44e/spongebob_squarepants_ending_theme_song_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6646dd19-4f14-4f8a-90ce-1df78492b56d/lekifajutiwububadi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e2355b2-6466-43e5-b767-de06a772030d/96058765821.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57624362-28c9-45ca-b3f8-3ecf5f371bc3/como_resolver_operaciones_con_fracciones.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_off00005e8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E8E 5008 bytes
SHA-256: 2a3f780b3717b72d97b25511571cca7749b5e23c05e746f0a440dc4effd8abff
font_01_sfnt_off00006f99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F99 10876 bytes
SHA-256: 8940e3688af364126366c2a5ff9c67446fbbfdbf9d3d4067dc3ed3f5feedeae8

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