Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a5ef58e883ad42d…

MALICIOUS

PDF

71.0 KB Created: 2021-02-14 13:09:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 5d3096479d8c0c6b720275a7c13f76bf SHA-1: 5c232ee82afb0463a57e1679aa7583f6635b700b SHA-256: 3a5ef58e883ad42d60830afc96c113d749907354db262ca01aecc5f0922496a0
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing site. The document body, though heavily obfuscated, contains metadata related to its creation, suggesting it was generated by wkhtmltopdf.

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
  • 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://bologen.ru/wix?keyword=through+the+tunnel+by+doris+lessing+theme PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4463009/normal_5fc8a57710f1d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370541/normal_5fe132fd86755.pdfIn PDF document text
    • http://newyearshop.site/wogimki78x.pdfIn PDF document text
    • http://talakam.space/ventajas_y_desventajas_de_mysqlyx1ei.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462374/normal_5fc77b21b7792.pdfIn PDF document text
    • http://steblin.pro/vufojatorexofaps08.pdfIn PDF document text
    • http://ryukzak.digital/assembly_line_definitionev6i2.pdfIn PDF document text
    • http://circus.market/39028060266svoqf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445532/normal_5ff610895682a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385620/normal_5fc9f6a0743de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421612/normal_600ff35bbb99d.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/ravuxudibure/68721141231.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/wabinajuzupat.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/sazuwegivogo.pdfIn PDF document text
    • https://s3.amazonaws.com/mojivikapeti/10227971273.pdfIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/car_rental_checklist_form_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jarirotexab/manuale_termostato_bticino_wifi.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/ajgar_name_image.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_off0000db18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB18 5220 bytes
SHA-256: 2b967069e82592357909f46f00477c59e45c6ee0c441fe532a02e6e748727563
font_01_sfnt_off0000ecb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECB4 9916 bytes
SHA-256: 65ab40294bea1606cd973a97f639d33403574dfd869e34d56b3de8fcf41b4416

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