Malicious PDF — malware analysis report

Static analysis result for SHA-256 41a48dd6153bf77e…

MALICIOUS

PDF

35.6 KB Created: 2020-10-15 18:28:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: b138251152bdab680de6332e18210f29 SHA-1: 746642c14ff944ddd97ad3210456d6fb033744ce SHA-256: 41a48dd6153bf77ec73fe879757cbebe2a22077496be4a7aa852576cb8da92cb
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=geeta+saar+in+nepali+pdf In PDF document text
    • https://site-1036811.mozfiles.com/files/1036811/fexonixawinanokanopim.pdfIn PDF document text
    • https://site-1036911.mozfiles.com/files/1036911/kofekikulatibazagog.pdfIn PDF document text
    • https://site-1039919.mozfiles.com/files/1039919/fajudakofelojegagirutebin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366395/normal_5f8754b107b84.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366022/normal_5f873a109d4a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366995/normal_5f8819d8e7b7c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365536/normal_5f8746a8b597e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369304/normal_5f87d4194e537.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366306/normal_5f870e82d9608.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365642/normal_5f8788b142c5b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367302/normal_5f875f3631dfe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366017/normal_5f87236a96256.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366397/normal_5f87d4651abfe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365607/normal_5f8708ecdd34b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367633/normal_5f87afd68d208.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365662/normal_5f8749741c4f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366957/normal_5f87399acd6eb.pdfIn PDF document text
    • https://site-1042279.mozfiles.com/files/1042279/miritobolajinemuxunimako.pdfIn PDF document text
    • https://site-1040785.mozfiles.com/files/1040785/bupekamerodevevedidive.pdfIn PDF document text
    • https://site-1048473.mozfiles.com/files/1048473/80835140040.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004eaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EAA 5064 bytes
SHA-256: 63e047a031eec62e39756f73614a39bbc7688186c57ab29c6928bdfd48c65ab2
font_01_sfnt_off00005ff2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF2 9848 bytes
SHA-256: e571493f43bc83deb76a0d104bd3ba366307376877da9a6c973931a08023cb7c

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