Malicious PDF — malware analysis report

Static analysis result for SHA-256 d90202321dff3fd0…

MALICIOUS

PDF

34.8 KB Created: 2020-10-15 17:28:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 0aea6caa0445567fe62f6e6b51db83a1 SHA-1: 703c82ba78c852470c7d9989e4d66878808b81c7 SHA-256: d90202321dff3fd0beb98352cad04e42926cfe4cd1d00c416ff17fef90a79767
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/123?keyword=mount+everest+rossano+galante+pdf In PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/safado-fodidunixoso.pdfIn PDF document text
    • https://fekudumubaf.weebly.com/uploads/1/3/2/6/132681201/movutomu-koberu-bifagefare-bimimepaxos.pdfIn PDF document text
    • https://wovasemuzusalej.weebly.com/uploads/1/3/1/6/131636629/8039758.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/kopiwu_gotatumeturi_bovejixegas_vivikow.pdfIn PDF document text
    • https://site-1044292.mozfiles.com/files/1044292/26943373327.pdfIn PDF document text
    • https://site-1037883.mozfiles.com/files/1037883/woweramolixevubifir.pdfIn PDF document text
    • https://site-1037891.mozfiles.com/files/1037891/91528130426.pdfIn PDF document text
    • https://site-1042276.mozfiles.com/files/1042276/meluzeguwo.pdfIn PDF document text
    • https://site-1037176.mozfiles.com/files/1037176/59190095489.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/1158663.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/8980310.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/1/0431/5591/4918/files/512969170.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9893/0341/files/crestwood_elementary_school_chesterfield_va.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/2258/8320/files/69020382480.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61b47604-7d95-47d6-9254-c50936acaf57/24488074740.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2496ca5d-bd8d-44c7-8a17-5861e5b388b1/22012164191.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83b5a3f2-d861-4e2f-90b6-50737f87ae86/novazebula.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ddae85b5-1162-40ac-8085-f091e00f184d/8202099549.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_off000048f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48F7 5272 bytes
SHA-256: b58e17eb37d1b1887172c5261ee7aa20050a11cf6b04518080e98480f23148b1
font_01_sfnt_off00005b0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B0B 10332 bytes
SHA-256: 038a97efe852d9bffed7c3a45bc6d9cea984ccb25a86e9c5654f181ff628e547

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