Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaca61ef7685d20a…

MALICIOUS

PDF

60.6 KB Created: 2020-12-19 01:02:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 8ed8223c334772e5991680ce7cbafe26 SHA-1: 9e27bb59564693b10e0f74689a9a8601caae5434 SHA-256: eaca61ef7685d20ae0e4d696a6541e0adfe915a52a731e5fd728537db6e679d8
96 Risk Score

Malware Insights

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

The file is a PDF document flagged as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to 'trafftec.ru', which is likely a phishing or malware distribution site. The PDF structure and embedded content suggest it's designed to trick users into visiting this external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafftec.ru/strik?utm_term=uppercase+z+in+cursive PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369306/normal_5f90e23037a40.pdfIn PDF document text
    • https://tajixuxax.weebly.com/uploads/1/3/4/7/134751877/dekodezabigep.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471249/normal_5fc8c8db20348.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/5fdcabee0a190b16b315d1db/t/5fdd281ef5f64226562a0832/1608329247321/47799113189.pdfIn PDF document text
    • https://s3.amazonaws.com/jedobufudajewu/3207825948.pdfIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/sound_damping_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/epic_seven_banshee_11_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce0ac6f16e5f16f948e48e/t/5fce41411e1a4d7de1573de5/1607352641998/8536118962.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcee6304809fd7eb9df42e8/t/5fd1d02ffec2791e3107d30a/1607585839685/kofigapurujesevidolofep.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf5209b1ed035389fe5a2/1606284577225/82382255908.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd1ad861a76734b5ab32aa/1606228698117/madosikobijagen.pdfIn PDF document text
    • https://s3.amazonaws.com/dosalapasenow/basic_algebra_rules_cheat_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/190654629.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_off0000b3c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3C0 4996 bytes
SHA-256: 190b16775e50cdbef18d44a147dc1371d693e934bf12109335c34db66ed863a7
font_01_sfnt_off0000c4dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4DC 9640 bytes
SHA-256: 408cbe90cee2f512577c97551c3545997dadc036bf02e21003d5b170b045b347