Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a945bc4510bf592…

MALICIOUS

PDF

71.8 KB Created: 2020-12-28 06:48:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: d68daedc9f4bc0c6743f6b2c4c72539e SHA-1: 6aa041f469a6d38bc5948ba28b033326e1c73a74 SHA-256: 0a945bc4510bf5924099cc98025eb3fff8cadc030eb4901e036e419a28794d6c
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, identified as a link farm, with the primary URL being 'https://traffset.ru/aws?utm_term=captain+america+movies+counter'. This suggests a phishing or scam attempt to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffset.ru/aws?utm_term=captain+america+movies+counter PDF link annotation
    • https://xefomivor.weebly.com/uploads/1/3/0/8/130814633/fozenimupozifo-rebesoxesuvow-titavode.pdfIn PDF document text
    • https://cdn.sqhk.co/xufatirumina/jhhgjU9/dawugerewapazupoziwumamed.pdfIn PDF document text
    • https://cdn.sqhk.co/bojojiweg/jnijidU/81792170754.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/a7ce7ea5-5f68-4fb9-9001-e64cb06d6dce/11267545822.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/890f9794-3597-4636-8788-02dd6e91c36a/goomba_Vol_3.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/panudigo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67c7130f-61f4-4bfe-9226-45ebd280ca3a/sazilisinufuwurusuxasebap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/885a5956-8ae8-439f-8159-94fa9ead7b4c/99600554968.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fb5147a-a35c-4f69-b3fb-6acc7b1ad32c/26702568956.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/543612fe-d595-454b-b53a-f8dfe6e80040/23332830179.pdfIn PDF document text
    • https://s3.amazonaws.com/lefemijip/nexetumaxo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a360453d-3254-4e84-b046-949d0cb51d5f/49792502572.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_off0000df69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF69 5012 bytes
SHA-256: 44a3f46e4b5267fce30f4f495f41bfdc1714ac52e5553fc04cee50664946f54e
font_01_sfnt_off0000f060.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF060 10108 bytes
SHA-256: 5083521d0126b176fe1ce9dcde645f57a60351c30dd82b5f89598edeeab750ee

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