Malicious PDF — malware analysis report

Static analysis result for SHA-256 03da913f94f5cf07…

MALICIOUS

PDF

69.9 KB Created: 2021-02-25 17:41:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 604fc50348121fc03a3ea2d35db12248 SHA-1: 399c3e15460e9915e38658445d87658b773c46de SHA-256: 03da913f94f5cf0775829519cb456d0178254815f3fbcdc77fa0e5e6437cc331
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/wix?keyword=ideal+gas+law+practice+worksheet+pdf In PDF document text
    • http://argo-tourism.com/spring_framework_version_upgrade6uodn.pdfIn PDF document text
    • http://nogurufegu.mygamesonline.org/wixubabatoxijor.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464523/normal_5ff2b2244c63e.pdfIn PDF document text
    • http://indohealth365.online/gutej05eqt.pdfIn PDF document text
    • http://nudistoff.club/kabupaxiwafuxopakobudojuv8ievx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499285/normal_5fc7efd72619b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411696/normal_60036b6b2947f.pdfIn PDF document text
    • http://idealicaitalia-oficial.site/proof_of_permutation_and_combination_formulawasqc.pdfIn PDF document text
    • http://plusstore.pro/freetvkey._com_telephone_numberze6j1.pdfIn PDF document text
    • http://makamar.online/ruxibasek07kj.pdfIn PDF document text
    • http://numulul.mygamesonline.org/74879386766.pdfIn PDF document text
    • http://souve.me/dollar_tree_application_indeedh4kod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444643/normal_60317f6129998.pdfIn PDF document text
    • http://goproonly.com/12481321029ynvnl.pdfIn PDF document text
    • http://mobeditobaxul.scienceontheweb.net/2020_starcraft_mossy_oak_ultra_lite_311bh.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pikubub.onlinewebshop.net/how_to_reset_plantronics_voyager_legend.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_off0000d443.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD443 5512 bytes
SHA-256: af102b191cac3850b9403d52f33af81346e86bafbc69513075edb4e567db24d0
font_01_sfnt_off0000e714.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE714 9940 bytes
SHA-256: b0c0f4ebe9e2c875c7ac478322e233d660a86d36a1e9c05dc2bb53baeff98313