Malicious PDF — malware analysis report

Static analysis result for SHA-256 602f8916ff18f1cf…

MALICIOUS

PDF

76.6 KB Created: 2020-11-09 18:10:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 96c9bc961b15c2cb5e2c47140bf5b7f8 SHA-1: 9169dcd650dfd8062eb32ed46d25832c09964088 SHA-256: 602f8916ff18f1cffbcf934ca5f80acd748ad98908a37469c24a4d5bcf06c712
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing or trojan. It contains an embedded URL pointing to 'traffset.ru', which is likely part of a phishing campaign impersonating Amazon. The document body, though heavily obfuscated, contains references to 'mass m1x amazon' and 'wkhtmltopdf', suggesting a lure related to Amazon services delivered via a PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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?keyword=mass+m1x+amazon PDF link annotation
    • https://siwizapetodid.weebly.com/uploads/1/3/4/0/134041585/xediwewulanitibise.pdfIn PDF document text
    • https://wifajeru.weebly.com/uploads/1/3/4/3/134342489/3240063.pdfIn PDF document text
    • https://wefejakero.weebly.com/uploads/1/3/0/8/130814310/sinoxas-nurus-juzizaga.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/1fec4e14-65d8-419d-b59d-cac1d74db109/75669696113.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c982f6e4-8864-4d17-8a98-19e5696622c3/29597328870.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/pdf_to_word_software_converter.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/fagoza.pdfIn PDF document text
    • https://s3.amazonaws.com/venunamazozuzo/fidoxaleninilalekekazer.pdfIn PDF document text
    • https://s3.amazonaws.com/kabisebax/48047224629.pdfIn PDF document text
    • https://s3.amazonaws.com/dubiditiginowo/bedebumaru.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/deforestation_essay_download.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/catholic_university_of_malawi_application_forms.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d07e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD07E 9896 bytes
SHA-256: 07800e46658b4ea4fdaba47fbc32d9d1bf5b9c6a63d0b856aa6ce946f1df5f15
font_01_sfnt_off0000f0e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E9 4880 bytes
SHA-256: ce1cae5bebec0e4cca252ea38c85885afd5e205aff1818c02f96b34d983a2f74
font_02_sfnt_off0001018c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1018C 10504 bytes
SHA-256: 503be07d581445cb05d66e85ff90f7dd01172fec4b0ddd2ac5cf69c318342e24