Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bd5869964c04c43…

MALICIOUS

PDF

68.3 KB Created: 2021-01-16 22:35:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: f85dc685258ad2f2676a55478984326b SHA-1: e90604c09d11cd110c5ed452c6d30fdbedc423c4 SHA-256: 8bd5869964c04c43ff9bc270eb82579a30428fea4b3e9a1f2ee95d72aea7b232
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffmen.ru/123?utm_term=541+209+4401'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of a malicious URL within the document structure indicates an attempt to lure the user to a harmful site, consistent with phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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/123?utm_term=541+209+4401 In PDF document text
    • https://site-1168507.mozfiles.com/files/1168507/google_sheet_api_documentation.pdfIn PDF document text
    • https://cdn.sqhk.co/dodufiruw/fAjehbm/vewuwul.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491673/normal_600274bc21dc4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491414/normal_5fb8bab6b6d4a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366048/normal_5fcbc0fcac147.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387819/normal_5fd7cf232be98.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403676/normal_5fcdc4aa5edd9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366375/normal_5fc1cbb22d6ca.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420470/normal_6002404fa1404.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456393/normal_5fae43a1a1e97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368501/normal_5fa4bb2a6d6e2.pdfIn PDF document text
    • https://site-1179856.mozfiles.com/files/1179856/datagabutalebaruloga.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tixeligufokup/voteragajefebazuv.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_off0000c3fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3FA 4088 bytes
SHA-256: 20e978d5931d8ae72d286629f3ad88e46d3ea26d63266380e12f2e9c76a2555f
font_01_sfnt_off0000d1c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1C7 11080 bytes
SHA-256: 24b86f0834f11a5e7cf75665c48d27b4e7536954e938ca1896aec7ecbc0fa05d
font_02_sfnt_off0000f6ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6EA 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

Open this report in the interactive analyzer, or submit your own file for analysis.