Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ffa063cd18afc77…

MALICIOUS

PDF

76.0 KB Created: 2021-01-22 04:58:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 55f18e03bde7eb57033fdc26c0255d19 SHA-1: 9caafcc1801864c85d0fc0ce4e0c6ffdc2dc62d4 SHA-256: 7ffa063cd18afc7744af8a077d0c5e4a9405b89154c3d749c7d08f29b8cb2a37
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by a machine learning classifier 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 malicious site. While no scripts were explicitly extracted, the nature of the detection and the presence of obfuscated content suggest it may contain embedded JavaScript or other malicious code designed to facilitate 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
  • 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://leonvi.ru/123?utm_term=air+fryer+hush+puppies PDF link annotation
    • http://fojozefamofu.22web.org/fine_motor_skills_handwriting_worksheets.pdfIn PDF document text
    • https://cdn.sqhk.co/fewisezux/iTIifjj/48088762620.pdfIn PDF document text
    • https://site-1168031.mozfiles.com/files/1168031/weather_forecast_for_saturday_in_chicago.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378852/normal_5fdecd5bd3ade.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445745/normal_5fe6c7bbd4872.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369336/normal_5ffd0615ce1c7.pdfIn PDF document text
    • https://site-1210486.mozfiles.com/files/1210486/disuwogozojafokibolod.pdfIn PDF document text
    • https://site-1168340.mozfiles.com/files/1168340/google_image_search_android_gallery.pdfIn PDF document text
    • https://site-1247475.mozfiles.com/files/1247475/takivuraxan.pdfIn PDF document text
    • https://site-1222023.mozfiles.com/files/1222023/hindu_marriage_biodata_format_in_word.pdfIn PDF document text
    • http://gikadoketu.iblogger.org/cours_algorithme_bts.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/jexijer/monthly_work_progress_report_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/o_khoc_cardigan_form_di_nam.pdfIn PDF document text
    • https://s3.amazonaws.com/divelatoxa/types_of_roller_bearings.pdfIn PDF document text
    • http://rowodebifofida.rf.gd/5235218661.pdfIn PDF document text
    • https://s3.amazonaws.com/zatazewoz/54296864913.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/77562855834.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/5242274709.pdfIn PDF document text
    • http://botesuni.epizy.com/vba_excel_format_date_now.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_off0000edcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDCF 4840 bytes
SHA-256: 29d95494fc4a581c5415a8f940532fa3bb01a74a4502f81fea202e3ec2e4f5af
font_01_sfnt_off0000fe51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE51 10980 bytes
SHA-256: 297107931a06fada1c201fdfcd3037ccbab3d9f26872f4c0e52f5d4aa92d86d7

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