Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5e14b014a31e58d…

MALICIOUS

PDF

63.3 KB Created: 2020-10-16 10:41:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 830f7eeba2520e8acd0b36ebf3bd4390 SHA-1: e3c4b00a0f98000a41eca5aeef8f379ed368af74 SHA-256: b5e14b014a31e58de4c2f354918b3c0e5b285e0cc39000ff2ca65c5a7cbb8cfa
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://ggtraff.ru/123?keyword=the+ultimate+miniature+painting+guide+pdf+free In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365553/normal_5f878e4af2a2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369783/normal_5f88bf25b3e51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366360/normal_5f873e14a9055.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368485/normal_5f880ff80d5f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367925/normal_5f88d0d74c922.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/4056517.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/kezupukono.pdfIn PDF document text
    • https://jubunukaf.weebly.com/uploads/1/3/1/4/131483214/6150248.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369664/normal_5f88fe2202159.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366027/normal_5f87205046f26.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370307/normal_5f8854d7ab7a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365594/normal_5f871917ce82b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365546/normal_5f86f44fb4e30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366336/normal_5f880436f292a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369311/normal_5f88dd0ce9daf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370541/normal_5f88880cedb48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367294/normal_5f87e6761d0a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367941/normal_5f885471281dc.pdfIn PDF document text
    • https://biwugina.weebly.com/uploads/1/3/1/1/131163984/monofilejo.pdfIn PDF document text
    • https://xozanazefozi.weebly.com/uploads/1/3/0/8/130874019/wexoduz_nowudaximex.pdfIn PDF document text
    • https://tajurasexir.weebly.com/uploads/1/3/1/6/131606020/4021379.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/lokujevu.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/1/0433/1782/1605/files/92684217725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/2207/4023/files/map_of_florida_coral_springs.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_off0000b982.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB982 5224 bytes
SHA-256: 6f9408108dd090162830ad0f7d5072fd05d418b264a1413ef963ee3910f60081
font_01_sfnt_off0000cb1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB1F 10816 bytes
SHA-256: ff563470937c0df7e4b4b2f07ae7833d5915fe24587ea8524c9a89bf3be50cfb

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