Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d1d94e94c20c9ea…

MALICIOUS

PDF

80.4 KB Created: 2021-02-19 02:36:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 42d56b26a80e36d0a574a0a0d0118d9c SHA-1: 703b2c210354e891cc7cfdbe29dea9f378ba78ea SHA-256: 5d1d94e94c20c9ea332860380960276b6b7b9b2fa0e52c7c8ee937d3d6648d21
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content, likely for phishing or to download a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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
  • 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://crophysi.ru/strik?utm_term=what+is+the+complementary+strand+of+dna+sequence+g-a-t-c-a-c In PDF document text
    • https://cdn.sqhk.co/zokasejiz/Iha7egh/47114099216.pdfIn PDF document text
    • https://lamuwopinu.weebly.com/uploads/1/3/4/6/134632291/5332476.pdfIn PDF document text
    • http://cherrypimp.online/graphic_design_portfolio_website_exampleseotel.pdfIn PDF document text
    • http://poverkavoda.website/vutozefasoxovasazvhwby.pdfIn PDF document text
    • https://cdn.sqhk.co/notizejamebo/SWhicib/maze_runner_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/kopupelek/jbijlSS/rufiw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fadakivok.rf.gd/how_to_write_a_simple_book_report.pdfIn PDF document text
    • https://s3.amazonaws.com/posaxugidut/nifawudowomo.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/32553550019.pdfIn PDF document text
    • http://rusakarazixano.epizy.com/target_black_and_white_christmas_decorations.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_off0000f8f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F1 5844 bytes
SHA-256: 5abf9173724654cbc6855b35cef38e5c3b63416f989be953dfd073ebaf229fed
font_01_sfnt_off00010cbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CBC 11576 bytes
SHA-256: 4ce19590c092de7a968092fc4b6ae462a8aea6536eec43318c26ed8bf4951f65

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