Malicious PDF — malware analysis report

Static analysis result for SHA-256 73b4bceef573702c…

MALICIOUS

PDF

63.5 KB Created: 2020-11-18 12:20:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0ad810169d4f8d30bc509427e965b949 SHA-1: 2f9de5f5e9691326c9c6b3a682b27c3da41e7749 SHA-256: 73b4bceef573702c3b687567b92b2277582f31d83963bfcad9357f92504335d5
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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://traffmen.ru/aws?utm_term=goodman+group+annual+report+2017 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4422368/normal_5f982162c2828.pdfIn PDF document text
    • https://finiluxexolije.weebly.com/uploads/1/3/1/8/131856594/bipopedanitol.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450419/normal_5f9ed4616378a.pdfIn PDF document text
    • https://vulewerogoxo.weebly.com/uploads/1/3/4/5/134507491/gogofufemax.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424683/normal_5fb303d16f00b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414494/normal_5fa5a7eb21682.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426830/normal_5f9ebe950f4de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376857/normal_5f8c58e215252.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/muvarelo/henry_county_schools_calendar_2019_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/bootstrap_modal_form_not_submitting.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/sm64_colour_codes.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/patotopuzovinix.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/lazy_boy_furniture_parts_department.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/sikonawojur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62b338aa-4b59-4e4c-8a22-baa41a157d37/5592999551.pdfIn PDF document text
    • https://s3.amazonaws.com/rexogeguxosix/arkansas_affidavit_of_financial_means_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/006bf2c7-c360-4d5f-80bd-34323c1022b7/94076998180.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_off0000baa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAA8 5536 bytes
SHA-256: b4f3d0aab9e2bd889297f9b2cf57871afe230b3421dd17c4e16946526955b0e8
font_01_sfnt_off0000cd70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD70 10456 bytes
SHA-256: 3c83376ab345bf3d586b88b09fa44174deca1f8f0b227555bf129c641b47be80

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