Malicious PDF — malware analysis report

Static analysis result for SHA-256 26788a296a398ee4…

MALICIOUS

PDF

48.0 KB Created: 2020-10-31 19:36:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 7bc3c62187f179dafe95a8c6a01fcb80 SHA-1: ccc42dc5cdcfe95e80d46fb9eb053264806050d8 SHA-256: 26788a296a398ee41afd2dba4334013b288cf2427c586c40025d305a2743034b
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=daughter+of+zion+scripture In PDF document text
    • https://betutinixe.weebly.com/uploads/1/3/4/4/134481053/petunujimab.pdfIn PDF document text
    • https://venifamu.weebly.com/uploads/1/3/4/5/134501621/5ea20.pdfIn PDF document text
    • https://wibanakipose.weebly.com/uploads/1/3/4/3/134361509/kenak_tonidavujurekid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381082/normal_5f8f8c66177bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383138/normal_5f928d8a115b8.pdfIn PDF document text
    • https://vezorobabuwej.weebly.com/uploads/1/3/0/9/130969079/xawiwew.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366993/normal_5f967626dc033.pdfIn PDF document text
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/561c7fd99eb.pdfIn PDF document text
    • https://sidunaxegizu.weebly.com/uploads/1/3/0/7/130776644/wojoxido.pdfIn PDF document text
    • https://pavowojavujide.weebly.com/uploads/1/3/1/3/131398322/1260817.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/mukobuf.pdfIn PDF document text
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/jewedo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365652/normal_5f8754416ebb6.pdfIn PDF document text
    • https://wilunozuwi.weebly.com/uploads/1/3/4/4/134432110/biluroz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wonoti/knee_joint_mri_anatomy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51610c62-df57-4798-adaf-8960651aa3a8/35545970279.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

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_off00007d89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D89 5292 bytes
SHA-256: 6687351f94b91954f0533079af5671085eb00404d05f0b3acc164c73e6e64549
font_01_sfnt_off00008fa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FA0 10292 bytes
SHA-256: c9acba377bb3cdc4a691cb05b1093e4c1e3c12e2bae944c82011279a9578720d

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