Malicious PDF — malware analysis report

Static analysis result for SHA-256 c61d4aede79cc3d9…

MALICIOUS

PDF

77.9 KB Created: 2020-11-29 04:22:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 2e54b6a71edfbf7c0c9295c5574061b6 SHA-1: eb512152cdbe1c60468a26ba2ac30b26ef4c6178 SHA-256: c61d4aede79cc3d9063ca417046f523dd46b669d7009fb9f55b68549b47d3344
154 Risk Score

Malware Insights

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

The sample is a PDF document flagged by multiple heuristics as malicious, including a critical alert for linking to known malicious redirector infrastructure. The primary malicious URL identified is https://gettraff.ru/strik?utm_term=till+lindemann+height+in+feet. While the document body contains garbled text, the presence of malicious links indicates an attempt to lure the user to a compromised site. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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://gettraff.ru/strik?utm_term=till+lindemann+height+in+feet In PDF document text
    • https://zuwumepegowivos.weebly.com/uploads/1/3/1/0/131069935/7f60432723aa63d.pdfIn PDF document text
    • https://pudukodup.weebly.com/uploads/1/3/1/4/131407572/xupowiradik_siraxelosekom_lafuwupov_tijazixalasifus.pdfIn PDF document text
    • https://mogawurid.weebly.com/uploads/1/3/4/0/134042680/9087336.pdfIn PDF document text
    • https://winomumamo.weebly.com/uploads/1/3/1/0/131070375/7db18b9465.pdfIn PDF document text
    • https://temonobulap.weebly.com/uploads/1/3/4/5/134592988/f41a92f.pdfIn PDF document text
    • https://diwapexag.weebly.com/uploads/1/3/4/4/134484560/8a9f096.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/retobifulipo/57047116006.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/koduzev.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/21804114286.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/83101662067.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_off0000efc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC8 4996 bytes
SHA-256: 7fa22cb4b3f70961ba01c18c781c02d82c778e56c0dd9f08d3b9caf7e641d4a6
font_01_sfnt_off000100a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100A3 13976 bytes
SHA-256: 0ddff86a21c3b535cfac5308bd7d5ee37592b02f8d1ddded1428716e2d8adab6

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