Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cd021d03d83572a…

MALICIOUS

PDF

71.9 KB Created: 2021-01-08 13:04:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 8a75362a6f6219a0c9c9094dc8a22b26 SHA-1: ee2f1cc2feac7d0e38cb29325e21cc3ccb38f5a9 SHA-256: 4cd021d03d83572a03acab7a702d692367e29447941b2e32e24ab060acd9975b
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffine.ru/wb?keyword=free%20robux%20loto%202020%20ios In PDF document text
    • https://funogumoduwe.weebly.com/uploads/1/3/4/3/134309977/431c042dea24.pdfIn PDF document text
    • https://joxetoxuluf.weebly.com/uploads/1/3/4/3/134391367/winisodenivuw.pdfIn PDF document text
    • https://cdn.sqhk.co/leburogutu/hciahjy/monem.pdfIn PDF document text
    • https://cdn.sqhk.co/potasuregoz/Ffiglha/crowd_city_apk_android_download.pdfIn PDF document text
    • https://cdn.sqhk.co/menasimax/Y3CifLW/download_photo_blender_for_pc.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/mogexutodisala.pdfIn PDF document text
    • https://xubuvene.weebly.com/uploads/1/3/1/3/131380433/63e2a690eb16.pdfIn PDF document text
    • https://cdn.sqhk.co/wixefawoz/gPY9pge/mopatidunipofimiw.pdfIn PDF document text
    • https://voperupazekeko.weebly.com/uploads/1/3/4/5/134505312/zuzofidugotezumob.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/lezopobigeza/kukezomawuxelavorevu.pdfIn PDF document text
    • https://s3.amazonaws.com/xupizewuxere/karyotype_c_worksheet_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37173bac-4c91-4bd9-8d10-d97a5a3a946d/70561444319.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70525e74-c072-4aeb-939b-a4a820d5fdc4/oracle_forms_and_reports_12c_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/tesodagiwor/asphalt_7_apk_data_offline_highly_compressed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a333a450-ee2d-43b0-94dc-aa15e36fea6d/vuzogusikazuwupazuwujojo.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_off0000dcb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCB4 4904 bytes
SHA-256: 0876dd161083f19e4f466358c6901e2e0e73577c064e97d3c65367078dcf84de
font_01_sfnt_off0000ed75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED75 10980 bytes
SHA-256: 4e36aac7de3ae1e3ed53fc9fb74e820e70f1e521e720a9097a29a9885c78e7ae

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