Malicious PDF — malware analysis report

Static analysis result for SHA-256 166796498153f197…

MALICIOUS

PDF

69.8 KB Created: 2021-01-24 12:36:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 81313e0e39250aa2042fa5bd657dd680 SHA-1: cfb87f537e72f13e904cdb0e8d45f8ab467d7cd3 SHA-256: 166796498153f19785f964ecf13f0bea7f4e7db8bf48bcc173c578f892c83ecd
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://yafferge.ru/shook?utm_term=romantic+love+songs+telugu+ringtones+download In PDF document text
    • http://oneplusonemain.xyz/motozosulozodobu8yh64.pdfIn PDF document text
    • http://fuwefepor.iblogger.org/goxuwamisoxedelekewijiw.pdfIn PDF document text
    • http://getodupelipod.iblogger.org/android_republic_optc.pdfIn PDF document text
    • http://axacheat4.xyz/como_es_el_pase_elite_de_noviembre_2020z05y1.pdfIn PDF document text
    • http://vomuniwawan.iblogger.org/azure_information_protection_labels_sharepoint.pdfIn PDF document text
    • https://vofaxarexokuj.weebly.com/uploads/1/3/4/7/134762848/9489618.pdfIn PDF document text
    • http://ruwegekugite.22web.org/go_kart_chassis_design_report.pdfIn PDF document text
    • http://shoop-fo.ru/37569942793d1iye.pdfIn PDF document text
    • http://55571.ru/wagikavad26eny.pdfIn PDF document text
    • https://jodudetejad.weebly.com/uploads/1/3/0/7/130775984/rovejajatapuwagoje.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vopapatadape.epizy.com/757550857.pdfIn PDF document text
    • http://ladorum.epizy.com/57708405730.pdfIn PDF document text
    • http://besikinugid.epizy.com/manual_functional_testing_interview_questions.pdfIn PDF document text
    • http://banitazivi.epizy.com/endocrine_system_hormones_worksheet.pdfIn PDF document text
    • http://radisabuvaba.epizy.com/cahier_des_charges_informatique_serveur.pdfIn PDF document text
    • http://vubixegigag.rf.gd/19123524574.pdfIn PDF document text
    • http://lexojowal.epizy.com/domain_driven_design_evans.pdfIn PDF document text
    • http://ziwivalotezeti.rf.gd/facebook_messenger_lite_apkpure.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_off0000d3bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3BC 5420 bytes
SHA-256: 10323b36335089e501605d7d9b5d5431dfe164748a05a1ea7412989995a2dde9
font_01_sfnt_off0000e623.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE623 10548 bytes
SHA-256: dc9e4ea95a0e7a9bd9714b48d08f2ea3baf73758745094dab21570e954ee94a6