Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fc38d2155f093fe…

MALICIOUS

PDF

70.0 KB Created: 2021-02-23 03:31:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: cb3194007fdf7588bed43442083fb45a SHA-1: 5be4420001cb651b0e110fd6f585286ec173512f SHA-256: 2fc38d2155f093feb7eb8e32d31b5b3dbafd6de6fe63c4f00e8bef9d147e64a1
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/wix?keyword=droid4x+apk+install In PDF document text
    • https://cdn-cms.f-static.net/uploads/4461484/normal_5fe9fc0e51c0c.pdfIn PDF document text
    • https://zoguripan.weebly.com/uploads/1/3/1/0/131070442/xipevenipalukox.pdfIn PDF document text
    • http://auto-fishing-rods1.club/ielts_6_reading_test_2_answersuz743.pdfIn PDF document text
    • https://buxudirikebipur.weebly.com/uploads/1/3/1/1/131164004/bagole-gumugutemejav.pdfIn PDF document text
    • http://spindlndou.space/rabojoruvizonafezipaziket88q47.pdfIn PDF document text
    • http://garant-ritual.online/pre_algebra_variables_on_both_sides_worksheet4bcq2.pdfIn PDF document text
    • https://bevamiwe.weebly.com/uploads/1/3/0/7/130739198/0895edede4.pdfIn PDF document text
    • http://reduslimitaly-ufficiale.site/final_destination_movie_in_hindi_dowf6tu7.pdfIn PDF document text
    • http://teksalon.xyz/capitalization_worksheets_4th_grade47re0.pdfIn PDF document text
    • http://gemomubogobupo.22web.org/fadoluwepopewu.pdfIn PDF document text
    • https://muverope.weebly.com/uploads/1/3/0/7/130776407/1147055.pdfIn PDF document text
    • http://tazizaj.iblogger.org/ximewowegapirufap.pdfIn PDF document text
    • http://maska-respirator.com/duxobigawopipiminet1u.pdfIn PDF document text
    • http://siwevizinoguji.22web.org/autocad_civil_3d_2019.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xubibufopude.epizy.com/makesaf.pdfIn PDF document text
    • http://petizitopebil.epizy.com/sscanf_format_string.pdfIn PDF document text
    • http://dupevinituz.epizy.com/kusotavelufi.pdfIn PDF document text
    • http://saxizezubunana.rf.gd/programme_management_definition_pmi.pdfIn PDF document text
    • http://fawivemepogu.epizy.com/51048902103.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_off0000d5ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5ED 5172 bytes
SHA-256: ecfb9f2ba2b8019928efce2a30ae17fc60b6b5d7127e77e6b6eaf92300f2def2
font_01_sfnt_off0000e7a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A4 10348 bytes
SHA-256: ee52cd5aa6118950808eeb62e00efa591daa0a43fbe23af0e8fcb0ca3065705b