Malicious PDF — malware analysis report

Static analysis result for SHA-256 71161456ebaadf8f…

MALICIOUS

PDF

73.2 KB Created: 2021-02-23 21:26:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 38cbb388658fd4578ee86b083185f81f SHA-1: 34b08b54ab972bb004d266f303db56fa3ca028b5 SHA-256: 71161456ebaadf8fe20f4713e97766ab0a939f1755745ad161dfe616fe85d754
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://leonvi.ru/wix?keyword=free+amazon+gift+card+codes+without+human+verification PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4412181/normal_5ff087617124e.pdfIn PDF document text
    • https://cdn.sqhk.co/jukusenefow/vvwhc4W/nenabivibizabogubavupif.pdfIn PDF document text
    • https://cdn.sqhk.co/kalufomaje/QjdjfKD/inner_ear_infection_how_long_contagious.pdfIn PDF document text
    • http://yarrebitteh.online/aggiornamento_android_tablet_mediacom_707ia8fdh.pdfIn PDF document text
    • http://peuly.xyz/lasugaposopefiabr35.pdfIn PDF document text
    • http://hairsprof.ru/sowijizemugejur3dwt.pdfIn PDF document text
    • http://znatural.space/break_up_hd_imagesp4f6x.pdfIn PDF document text
    • http://peskomment.ru/lezifiteguludapilekilom2u2.pdfIn PDF document text
    • https://cdn.sqhk.co/vivutazawi/sjahbie/rujapatelozirofarebunos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/23863105077.pdfIn PDF document text
    • http://luviwozota.rf.gd/android_auto_honda_crv_2016_update.pdfIn PDF document text
    • http://mizugegixa.epizy.com/prevention_of_occupational_hazards.pdfIn PDF document text
    • https://s3.amazonaws.com/dofufiri/74263390383.pdfIn PDF document text
    • http://zadabodemuliju.epizy.com/31984982089.pdfIn PDF document text
    • https://s3.amazonaws.com/murudute/template_thank_you_email_after_business_meeting.pdfIn PDF document text
    • http://foboganezebalo.rf.gd/vafilenipen.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_off0000e000.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE000 5560 bytes
SHA-256: 2472dafd4e593626c9a0dfb091a1ca7e201791dc91aa801937a92d71e969ef9a
font_01_sfnt_off0000f2e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E5 10644 bytes
SHA-256: 0bae3159af912032c6a22742afdf2dce18c5e720ed1e0495460b679f44080b36