Malicious PDF — malware analysis report

Static analysis result for SHA-256 16ba02c5960595ab…

MALICIOUS

PDF

64.8 KB Created: 2020-11-19 05:53:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 2bba2c325b1413257e34a7246eb7d6e6 SHA-1: 1225206c990779ff5bb425c7e746e8c5fefcdba5 SHA-256: 16ba02c5960595ab5cbb23661af3d2a6d987fa501e6ca4de2b981b5459d161b7
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing attempt. One of the external links, https://trafffi.ru/123?utm_term=rios+de+agua+viva+versiculos, is flagged as unknown reputation, indicating potential maliciousness. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/123?utm_term=rios+de+agua+viva+versiculos PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384039/normal_5f9766d43cebc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421613/normal_5f9aec742d54e.pdfIn PDF document text
    • https://vovejurumek.weebly.com/uploads/1/3/4/6/134644047/707912.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412774/normal_5f973f13c2b36.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366354/normal_5f9959ce8188b.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/zidebesirolabavo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377377/normal_5f93ba66b2bac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392191/normal_5f90826bb8fa5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365621/normal_5f9c9a9c819ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411696/normal_5f960fb95a8ae.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/07fbfc38-36cb-4c70-b8e0-fc0020af8827/succeeded_definition_for_budgeting.pdfIn PDF document text
    • https://s3.amazonaws.com/regegozumekoza/woodmore_high_school_alumni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e48fec4-f63f-4608-973e-94d53b5b4681/kugudaruxezatiw.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/67611172651.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_off0000c01a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC01A 5176 bytes
SHA-256: 040e3645b68207343ef9585a8383856d1af0eabc55fcab6880f2ae07c219f187
font_01_sfnt_off0000d1d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1D1 10960 bytes
SHA-256: 438d86aba81dd317d7e1be34de92b71365ba8546364e2d74fe9ef9419d65c9c7

Open this report in the interactive analyzer, or submit your own file for analysis.