Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac2fc6d38518a0e9…

MALICIOUS

PDF

71.5 KB Created: 2021-02-21 18:06:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: f3cdd33286f626a14a44b331fd19fd64 SHA-1: 2fa8d731ecdb0ac6fa432718bb0954bb1be111ca SHA-256: ac2fc6d38518a0e9dbb92e29e635443cc41c4ca396dac166751f0df9855d59f9
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=sapphire+dragon+5e In PDF document text
    • http://inostrana.com/how_to_report_mann_whitney_test_apauzvzh.pdfIn PDF document text
    • http://copyright-help-report.com/69787197478ocsax.pdfIn PDF document text
    • http://sosed.market/informal_letter_address_sampledbhab.pdfIn PDF document text
    • http://remont-pc.website/tarovevlhuv0.pdfIn PDF document text
    • http://jilet1.club/maple_leaf_rag_sheet_music_easympyus.pdfIn PDF document text
    • http://shoop-fm.ru/android_app_tutorial_visual_studio_2017opzx8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386839/normal_601e8b28aeddc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gadunekubajip.rf.gd/vozevivasedefuxibujorovid.pdfIn PDF document text
    • http://buwomir.epizy.com/78156682420.pdfIn PDF document text
    • https://s3.amazonaws.com/jinotugiwomo/3579470929.pdfIn PDF document text
    • http://sunemixawuvija.epizy.com/a_nightmare_on_elm_street_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/how_to_use_boye_long_loom_set.pdfIn PDF document text
    • http://xaxidos.epizy.com/zegufepofimanabej.pdfIn PDF document text
    • http://puwovejivu.rf.gd/42081981941.pdfIn PDF document text
    • https://s3.amazonaws.com/wovigebi/bespoke_careers_salary_guide_2019.pdfIn PDF document text
    • http://jejivosijej.rf.gd/journal_of_mathematical_biology.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_off0000daac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAAC 5236 bytes
SHA-256: 79465867757d1fd31319e52491d7e576f4116f741ffecc6c737fb5c85258e624
font_01_sfnt_off0000ec77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC77 10820 bytes
SHA-256: 48ac00062abb800c0f64f5381c1e64927fb358de9690b27676ea1bcdfa635c1e