Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d39954997ee504b…

MALICIOUS

PDF

70.3 KB Created: 2020-12-01 20:39:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-24
MD5: a7aec87546f83ee230282b640a7116ef SHA-1: e50e04f74e8b95c9664593cb0018c26e30928a99 SHA-256: 5d39954997ee504b9ee9aa119f74027dfa02a11e80a7e733de91033ed77ad143
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, indicating a phishing or malware distribution attempt. The document body, though heavily obfuscated, suggests a lure related to driving tips. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to a compromised site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/123?utm_term=tips+for+driving+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4381320/normal_5fa46623108eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366339/normal_5f870ed32778c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383445/normal_5fc1af9389f98.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481671/normal_5fad68666a091.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/5fc294d0bda9c57a97c8e281/t/5fc40e2218e72e5fdb56b5e9/1606684194451/spoken_english_notes_free_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfeb102bbd74065800e14d/t/5fc0ec0064571256545d1674/1606478850454/67027870479.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe2afca97599144ec18e45/1606298369701/vishnu_sahasranamam_lyrics_telugu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f169085bf90c0efd4cbb/t/5fc141e5fa04221c714dd056/1606500837760/pandora_one_mod_apk.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0b633d26ff1194f72bba3/t/5fc2a115cb3e0f5771a5ffb1/1606590741380/gowolowotuvolomikilivoxa.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd0b0368bfc5186169c63e/1606224645516/pro_forma_balance_sheet_using_percent_of_sales_method.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe3aee9d7936484059eaf2/1606302447075/wexiloxetivafotumaluzugi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf567a7acac6192ab7cbd3/1606375035030/jexekevupas.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe003ef8cdb769c6a9b041/1606287424678/13446260745.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2b9a71452f90b7ff10464/t/5fc587863570fb44d1bfbf8f/1606780806504/abbreviation_for_attorneys_group.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_off0000d6e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6E3 5372 bytes
SHA-256: 705c8f647b9783c3f38d47679bba3fa3283d134fada6cde2ac2bac7a2fc42c38
font_01_sfnt_off0000e916.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE916 10424 bytes
SHA-256: 90f5894ee082771ed36b4cd8e0e4fff63c8a53a42e0118aa0303e8dae93cebea

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