Malicious PDF — malware analysis report

Static analysis result for SHA-256 172ea34ac95987b5…

MALICIOUS

PDF

44.3 KB Created: 2020-10-03 01:48:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 753ba0f16bd80526702410c74cbe9196 SHA-1: e63130e9ed807666e8d9822da64a7245f01c846c SHA-256: 172ea34ac95987b5ce00fb93fc3e9724f743753db24450051fe4f340644c2dae
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://ggtraff.ru/strik?keyword=stellaris+auto+upgrade In PDF document text
    • http://vijonexe.klinepoodles.com/uploads/1/3/0/8/130874330/c62427.pdfIn PDF document text
    • http://files.bonedesigns.com/uploads/1/3/0/7/130775735/0a4daaf2775.pdfIn PDF document text
    • http://files.jeujeulafoille.com/uploads/1/3/0/7/130776120/8ba030.pdfIn PDF document text
    • https://site-1039775.mozfiles.com/files/1039775/pewidirimerof.pdfIn PDF document text
    • https://site-1040665.mozfiles.com/files/1040665/pijenetotutotixexino.pdfIn PDF document text
    • https://site-1036835.mozfiles.com/files/1036835/47977351645.pdfIn PDF document text
    • https://site-1037091.mozfiles.com/files/1037091/27413431744.pdfIn PDF document text
    • https://site-1038363.mozfiles.com/files/1038363/nifudojevigufigu.pdfIn PDF document text
    • http://mesib.affordablestoragemidland.com/uploads/1/3/1/6/131606490/jozerafejez.pdfIn PDF document text
    • http://vulub.pleis.us/uploads/1/3/1/4/131438304/guvozamuli_jupamusuzese_puwexudijarew_gozikajarox.pdfIn PDF document text
    • http://zivaza.dileoenglish11h.com/uploads/1/3/1/3/131379578/6531905.pdfIn PDF document text
    • http://files.huntclubhomeowners.org/uploads/1/3/1/4/131438839/pifasebiwavat-dibapobose.pdfIn PDF document text
    • http://kunupunus.rescuedfirewood.com/uploads/1/3/1/3/131383541/3829052.pdfIn PDF document text
    • https://site-1036807.mozfiles.com/files/1036807/4552207891.pdfIn PDF document text
    • https://site-1039153.mozfiles.com/files/1039153/mujapewevuwapalijepa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000701e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x701E 5228 bytes
SHA-256: 1665876a97576ef0ae039f68fe5707cd35387a1e6c46a33752c5f0d4c2ec6977
font_01_sfnt_off000081ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81EF 10208 bytes
SHA-256: 59af4085c376344b35f7a419f567245a7e2aa0197890da0ef6d710fa7fca3e53