Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6c0a2b11cafa44e…

MALICIOUS

PDF

73.9 KB Created: 2021-04-15 19:58:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 458a8050b6ba4993e10d2b733357e0d4 SHA-1: 7cb6b0a00db24da0df5a40e4ce9cb3c42aabf055 SHA-256: e6c0a2b11cafa44e0b0edd21e3057329bdae646445f0a9b3fcf066cafc4a8f32
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with at least one pointing to a suspicious domain ('xezojetit.ru') and another to a link farm on disposable hosting ('rinudesit.epizy.com'). The document body is heavily obfuscated, but the presence of many links suggests a phishing or malware distribution attempt.

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
  • 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.
  • 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://xezojetit.ru/strik?utm_term=the+natural+butch+reed
    • https://cdn-cms.f-static.net/uploads/4485149/normal_60266a68a5f9b.pdf
    • https://cdn.sqhk.co/loxepafigav/IWQVyhc/delububorob.pdf
    • https://cdn.sqhk.co/nezupusovefi/agjBxsc/raiders_bleacher_report_cartoon.pdf
    • https://tofariviviri.weebly.com/uploads/1/3/4/1/134109347/lilulebud.pdf
    • https://cdn.sqhk.co/javomekoru/xQhgJOc/mutibeko.pdf
    • https://cdn-cms.f-static.net/uploads/4485939/normal_604b7f82e7463.pdf
    • http://nowanedilado.22web.org/turivotafutidezenigediki.pdf
    • https://cdn-cms.f-static.net/uploads/4473379/normal_5fd971e92410d.pdf
    • https://jojesiwanoj.weebly.com/uploads/1/3/3/9/133986560/cd0e67bd2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://rinudesit.epizy.com/manualidades_para_nios_1_2_aos.pdf
    • https://uploads.strikinglycdn.com/files/9d42c1a6-4622-4df4-80cb-a2649c38dd5a/75456569148.pdf
    • https://c84d532c-3b33-47d6-96aa-4134a1164eb1.filesusr.com/ugd/6d45f6_ba653298522a474eb3dc2945a2b9775d.pdf?index=true
    • https://f13dd0f9-fe0a-4257-a88d-d9af1a1cf0e3.filesusr.com/ugd/d954c5_c0937b64bce84219b81337f9f4bd4d14.pdf?index=true
    • https://uploads.strikinglycdn.com/files/b7582399-6d63-4f20-bc0d-67d2fc2e6411/magnetic_curtain_rods_for_door_sidelights.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e209.bin
563abb0d9cbc29f8dc906617245f66fe0a6c75ee7ea13f2a6dd30609ed4ae68f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE209 4936 bytes
font_01_sfnt_off0000f2c1.bin
70de25a82cfabd53470795fb9ad1b4593b1a8ef07e4490085c6e7683c0ccf676		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2C1 11420 bytes

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