Malicious PDF — malware analysis report

Static analysis result for SHA-256 da29baaee4f35f4c…

MALICIOUS

PDF

69.1 KB Created: 2020-12-23 02:35:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0490b72a26a997ed992657cc35f9663 SHA-1: 7ae6fda64ba962ac9b9dc0b741cfb5c34bf318f6 SHA-256: da29baaee4f35f4c1265863a3d281c16557975cf824671cd077424edc718948a
154 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to known malicious infrastructure. The embedded URL, https://gettraff.ru/strik?utm_term=destiny%2527+s+child+all+songs+free+download, is associated with this finding. The ML classifier and ClamAV also flagged this PDF as malicious, suggesting a phishing or trojan delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://gettraff.ru/strik?utm_term=destiny%2527+s+child+all+songs+free+download
    • https://cdn-cms.f-static.net/uploads/4369150/normal_5fb8742e7d1e3.pdf
    • https://cdn-cms.f-static.net/uploads/4367650/normal_5f8b733e3e69b.pdf
    • https://cdn-cms.f-static.net/uploads/4375070/normal_5f900ac836524.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fe26e1a6b7d2f0320c5d9c7/t/5fe2860025368a4e8962839a/1608680961928/xukadijegokojo.pdf
    • https://uploads.strikinglycdn.com/files/2fbcf6b5-4463-4e6f-97d9-7c79e3945df0/62091263094.pdf
    • https://static1.squarespace.com/static/5fc10ac260f2895dc1e8a19d/t/5fc68d89e6d49a06bb77e307/1606847881609/44843734149.pdf
    • https://uploads.strikinglycdn.com/files/0f6bfbae-89d3-448b-b0ec-5869fb38516a/10931297629.pdf
    • https://uploads.strikinglycdn.com/files/424e6d1f-f383-4139-89db-9185d08ce7dd/39068107531.pdf
    • https://s3.amazonaws.com/widuxade/81677928264.pdf
    • https://static1.squarespace.com/static/5fc7aba6778af068263fedd7/t/5fcc707574a40730fb917d1a/1607233654513/nba_2k20_music_playlist.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf66fe2dd96f5918e71b94/1606379262198/dd_stats_roller.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d115.bin
2a0a4642b6bba4c04f11c2f8ab2a4b1d76a238e348173bc59d25305e98290369
pdf-font-stream PDF embedded font (sfnt) at offset 0xD115 5512 bytes
font_01_sfnt_off0000e3f8.bin
58e28830156e23ac3b9c1a2d580c6f34d37f049404dcbd284600b23184300af2
pdf-font-stream PDF embedded font (sfnt) at offset 0xE3F8 10428 bytes