Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2b5cf909decbeac…

MALICIOUS

PDF

59.6 KB Created: 2020-11-18 02:00:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 44c42fe4ebaeb58fdb8a59c6dea36523 SHA-1: 20dded91121ccd36c2a1048fa6368a0ed88dc60e SHA-256: e2b5cf909decbeacf031579b28e23478dbfe02adaffd23b25e6696054d46cba1
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/strik?utm_term=cristo+yo+te+amo+guitar+chords'. This indicates the document's primary purpose is to lure the user to this malicious site. The ML classifier and ClamAV also flagged this PDF as malicious, supporting the phishing or malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://gettraff.ru/strik?utm_term=cristo+yo+te+amo+guitar+chords In PDF document text
    • https://poxusesemeli.weebly.com/uploads/1/3/4/4/134462398/gitob.pdfIn PDF document text
    • https://nutifikidejuz.weebly.com/uploads/1/3/4/3/134347692/9583731.pdfIn PDF document text
    • https://xivenisulebitok.weebly.com/uploads/1/3/1/3/131378814/9223385.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/57be6373-a1fe-4930-b7a7-4ecf29e03646/puromixutewalejevidiba.pdfIn PDF document text
    • https://s3.amazonaws.com/nuruvapozixix/kerewilofefokolukasinupij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02209d3f-8702-479b-8da4-2acc09047945/92610596709.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/67428969028.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86b0c501-1afd-42b1-b00c-c334481c3373/les_nombres_jusquau_milliard_cm1_valuation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b7801ad-ea71-4d55-9fc1-1356e976343a/87149821442.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e491209-75ad-4752-8e20-c035774288df/7792677142.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/922ec0c9-c159-4c8e-af0a-ab1973518ceb/97286137664.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_off0000abba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABBA 5328 bytes
SHA-256: 2768302cfd5f3fa7d1dd9d34c64123350b42002882726c60875b3468fa690e7a
font_01_sfnt_off0000bdb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDB2 10532 bytes
SHA-256: 58cacae9df3167a4a64abf06a9e92ffc7af1073c6492a310d7232b084674ae66