Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe2ef8541380ae15…

MALICIOUS

PDF

78.9 KB Created: 2020-12-20 14:10:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 17e16aa5dc2455cba62cd44b50681a55 SHA-1: 4ef5b467a00dd386ca123c323b9f66cde9adf2a0 SHA-256: fe2ef8541380ae15be6aa145b80189788d7114c429678627d3582e402a3d3f0d
154 Risk Score

Malware Insights

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

The PDF contains embedded links that point to known malicious redirector infrastructure, specifically 'traffmen.ru'. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to lure users to a compromised site, likely for phishing or further malware delivery.

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://traffmen.ru/strik?utm_term=allegan+county+gis In PDF document text
    • https://wogijelagorezu.weebly.com/uploads/1/3/4/0/134096035/b312d4b79450cc9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449793/normal_5fc8bb63cc132.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422372/normal_5fcc02cc9f380.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503390/normal_5fc9dccbef185.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374368/normal_5fc2649009323.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405206/normal_5fb9487813368.pdfIn PDF document text
    • https://zemutixo.weebly.com/uploads/1/3/4/8/134865820/tuwogojezimitis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393772/normal_5fc2d83a96581.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408479/normal_5f9ec9a78b1d0.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/ff565715-19c4-44e4-8f00-1326467be077/29918706251.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc57f7f2bbd74065825a53a/t/5fcae8249d29b56e4df75530/1607133221297/90858450052.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc17ddbf9866f3fd2d885d9/t/5fc46ae53570fb44d190ae3b/1606707943893/41099690565.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd136d4397200107e1ca4b/1606226798703/dr_pearson_diabetes_cure_fake.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_off0000e9fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9FC 3556 bytes
SHA-256: 510e3cb23025d81aea1a76dc9a1de360237c37257566e35177b4f3950b9e22e3
font_01_sfnt_off0000f6b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6B8 4964 bytes
SHA-256: 09d1eabcbfae51d87f30744f2d0e613fa8c487af1e768fc2ec9abbb591e353de
font_02_sfnt_off000107bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107BD 12100 bytes
SHA-256: b8b806b866555f127bd6fa2957ff3235f425b2c456201c98b13d7abb65a046c0

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