Malicious PDF — malware analysis report

Static analysis result for SHA-256 95f6fbba96beda98…

MALICIOUS

PDF

82.2 KB Created: 2020-12-17 23:04:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 2265d4c4d2b9caf669131c2020451533 SHA-1: 46b0cf4a4124719bd90b38122de9e335f5cc484b SHA-256: 95f6fbba96beda9895ffc983b2ed075afa424a43c74cb071d653bbd25048ce8d
96 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics, including a machine learning classifier and ClamAV, indicating malicious intent. The embedded URL points to a suspicious domain, likely used for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, aligning with spearphishing tactics.

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafficel.ru/strik?utm_term=michael+lewis+marketing+suite PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366313/normal_5f87841e0a7d0.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/0c5d7b25-bbfa-429b-a4ce-ba894feed255/men_at_arms.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/repidiloja.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/indio_middle_school_website.pdfIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/central_government_ministers_list_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/3243968012.pdfIn PDF document text
    • https://s3.amazonaws.com/fojaxexino/xexogibeju.pdfIn PDF document text
    • https://s3.amazonaws.com/fadadedezeker/51307190596.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f56b4dd-f4f3-4609-867c-602f330ca053/electric_pressure_cooker_xl_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/percy_jackson_clarisse_scene.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ac69e2b-8b4c-4e86-a308-87b99349dff6/fagilojotaz.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/yeezy_350_v2_butter_size_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sirilagewuga/3969473077.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_off00010484.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10484 5376 bytes
SHA-256: 21372f4c219eed6b2d89b44b34121ebcbd0ef63faa37d725d71fc002eb044cba
font_01_sfnt_off000116be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116BE 10892 bytes
SHA-256: c8eb0657785a2dad9458356142222ecc1cf7e12f4c811e415d26697de0c1b441