Malicious PDF — malware analysis report

Static analysis result for SHA-256 a195012812e28524…

MALICIOUS

PDF

44.4 KB Created: 2020-10-15 06:59:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 223ea5b3e2ea4473d98afc4e467f9ec8 SHA-1: eb3b887885a660cb564e5e0610b455152efe1ce7 SHA-256: a195012812e285249ed674723e542f54eff22dc01ecf1b6714f2cf8c02cf46cb
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://cctraff.ru/strik?keyword=teeth+whitening+app+free+android In PDF document text
    • https://fewevivib.weebly.com/uploads/1/3/0/8/130813821/1cb9894be10.pdfIn PDF document text
    • https://pivozedotafi.weebly.com/uploads/1/3/1/0/131070355/e1f2b21.pdfIn PDF document text
    • https://riwisasivituw.weebly.com/uploads/1/3/1/0/131070703/6e208a5c1c38d.pdfIn PDF document text
    • https://site-1036982.mozfiles.com/files/1036982/97833716551.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365580/normal_5f86f5e5521fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366337/normal_5f87a3cf71ef5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365612/normal_5f8755a34b52a.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/zuvekazabuz-topofelo-gupolekodojavo-ponabiloxe.pdfIn PDF document text
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/154782.pdfIn PDF document text
    • https://xuvakaxatal.weebly.com/uploads/1/3/1/0/131070170/2395955.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/bb8b5ad.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/rebodi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366654/normal_5f87b8fa746f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367013/normal_5f87415ddcc0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366302/normal_5f87a164b8de8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366007/normal_5f87514e76ed3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368750/normal_5f87adbfac449.pdfIn PDF document text
    • https://site-1042193.mozfiles.com/files/1042193/28642228244.pdfIn PDF document text
    • https://site-1037835.mozfiles.com/files/1037835/soguzufo.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_off000070b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70B1 5136 bytes
SHA-256: 216910a62a19c279f9ee5bd2663d376be43d25d1653cdbbe6d560dfacf889ceb
font_01_sfnt_off00008237.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8237 10160 bytes
SHA-256: ae42c11a609b6eb31ed86f1ed4cc19f15bcf4298b996497a8e5e762d0a9e6d12

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