Malicious PDF — malware analysis report

Static analysis result for SHA-256 c02675abb60e627c…

MALICIOUS

PDF

67.9 KB Created: 2020-12-19 17:55:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 43a5410885013ee095e1e7d4987ec57a SHA-1: c6c57a5c2fa70d79eda476b365d3916a6d53be9c SHA-256: c02675abb60e627c79f9af29b4c307614ba4f34c8a3c5f8cc8d0e80c289af02f
214 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 'traffmen.ru'. Additionally, ML classification and ClamAV detection strongly indicate malicious intent, specifically identified as Pdf.Phishing.Trojan. The embedded content, though heavily obfuscated, appears to be a lure, likely related to 'Barbie dream house instructions manual', to encourage users to click the malicious link.

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
  • 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.
  • 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://traffmen.ru/strik?utm_term=barbie+dream+house+instructions+manual In PDF document text
    • https://kagadema.weebly.com/uploads/1/3/4/4/134456650/rivaduzute-dibeg-kivasolonuxoko-safid.pdfIn PDF document text
    • https://sudogela.weebly.com/uploads/1/3/4/8/134846286/81cc26a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc0d4c78139af037644e8c4/t/5fc113c24f9837572005c660/1606489027613/what_nationality_is_jim_cantore.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/1300337880.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5407160f2895dc1046ad0/t/5fc70ae96beae454315cdb17/1606879979030/56525570469.pdfIn PDF document text
    • https://s3.amazonaws.com/gorajikunobixi/hikvision_cctv_installation_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wolina/sonic_gts_interactive_stories.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6592ae9fc3622d5471997/t/5fce6eb4a559b80aaa7af8d8/1607364278217/posizuroxolumoxu.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/character_analysis_thesis.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/57280646941.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/area_of_parallelogram_vector_formula.pdfIn PDF document text
    • https://s3.amazonaws.com/kewuxejikiwe/the_i_land_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/widuxade/74374634026.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/xadenegile.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6d9abe9133927d90b22aa/t/5fd1fb607c12252903f88123/1607596896724/87674892802.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_off0000cd71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD71 5368 bytes
SHA-256: 78f5ffa5b7868848b4fc89b3dedf7ac95ae84aba3a8662605aec27d522a06415
font_01_sfnt_off0000df81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF81 10364 bytes
SHA-256: efef877d256f0b3f5af967bd4a4cc9eb3d4618155c536780c8a8c80594a04424

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