Malicious PDF — malware analysis report

Static analysis result for SHA-256 2617964cb623f8c2…

MALICIOUS

PDF

78.7 KB Created: 2020-12-03 16:55:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 8011f0a426d133d83eb87304d56f337b SHA-1: 16d36203162599aab9872d55cfe9185c38c6dfb8 SHA-256: 2617964cb623f8c2ddb766aa82e911391c196fdbf417892054f9c6d07752e165
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector infrastructure, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The embedded URL, https://traffine.ru/aws?utm_term=globalization+in+contemporary+world+pdf, is the primary indicator of malicious intent. The ML classifier and ClamAV detection further support the malicious classification, suggesting a phishing or trojan delivery attempt.

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://traffine.ru/aws?utm_term=globalization+in+contemporary+world+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4475194/normal_5fad6e5cc51f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420037/normal_5fa5909223111.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448343/normal_5f9f9fcc87a01.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463554/normal_5fa7cfba1ad70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420235/normal_5fc0d663da3fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369307/normal_5f8ff2469e655.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379849/normal_5fac3ef47eda2.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/gomaxod/comment_apprendre_le_portugais.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/extent_report_free.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc100ee92c50b1a1e781c95/t/5fc4ddf9145a8629dc499876/1606737401699/mabikofozadixonit.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_off0000f6a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6A7 5540 bytes
SHA-256: fb87eb030331c968273797d6ed0f6d8335c11b97d26be028e8f593ef0497197a
font_01_sfnt_off0001098a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1098A 10860 bytes
SHA-256: e52b2819531dfb5d459e02dafd563a965f7da074fa95d3385ee9d8bc748888e2

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