Malicious PDF — malware analysis report

Static analysis result for SHA-256 00422a59b1beb369…

MALICIOUS

PDF

69.9 KB Created: 2020-11-13 23:53:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: b8af06ba23c9acf1796bf91de9cbbcbb SHA-1: 1d14ec0b00abb08ed54cb60c39a5a5b034284201 SHA-256: 00422a59b1beb3697d0f1d347d237c1f87e2d2e8e76b7bce98a3274bcecd8c2f
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing attempt. The primary URL, 'https://trafffi.ru/123?utm_term=princess+angela+of+liechtenstein+wedding+dress', is presented as a search result, likely to entice clicks. ClamAV and ML classifiers also flagged this PDF as malicious, supporting the phishing and malicious link distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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=princess+angela+of+liechtenstein+wedding+dress PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4380691/normal_5f8cfe2a5aebd.pdfIn PDF document text
    • https://norigawe.weebly.com/uploads/1/3/3/9/133988483/xipepe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366033/normal_5f874672a61d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451353/normal_5fa6bfc8eb172.pdfIn PDF document text
    • https://ximazula.weebly.com/uploads/1/3/0/7/130738777/600efe96.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366008/normal_5f8d878aa8314.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/wozibap/xupej.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/evandoi_srivaru_telugu_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/alvida_mahe_ramzan_status_mp4_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/347d5772-7e71-47ac-b4dd-45396896179d/15250881919.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_off0000d51b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD51B 5376 bytes
SHA-256: 7e1b2c0bb769b2030c7c924b99d4dfa6b9e6fee7269626a1a9628269f23c6b95
font_01_sfnt_off0000e76f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE76F 10528 bytes
SHA-256: 03ad8f0cd783bc080c571dc97713a7161c4c78106911afd28531a453e40dc936