Malicious PDF — malware analysis report

Static analysis result for SHA-256 d583c12a467d0c28…

MALICIOUS

PDF

72.1 KB Created: 2021-02-08 00:56:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f62b56612c05a3d51d9ad892a8d3b1da SHA-1: 13a4b2630e1c39b6e676549671b668e266e7a530 SHA-256: d583c12a467d0c286ba06078dcfce823f49b55f7e7f8a776b70fa9ed6ccd5427
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://maypoin.ru/wb?keyword=neck%20and%20upper%20back%20exercises%20pdf PDF link annotation
    • http://juvozukatug.66ghz.com/bob_ong_kapitan_sino.pdfIn PDF document text
    • https://cdn.sqhk.co/batovafakupo/jgThjzl/most_popular_ringtones_list_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/dovoxukeni/hahf3d5/bemivodilufekavalugof.pdfIn PDF document text
    • https://cdn.sqhk.co/xamitarerivu/EFjXjhC/zoruporuzukuletuvet.pdfIn PDF document text
    • https://palujaburufo.weebly.com/uploads/1/3/2/7/132740236/rukipafifotuj-posofoked-pelodikawax-sojefulufiduj.pdfIn PDF document text
    • https://cdn.sqhk.co/goxobuve/0Bgf1ln/classic_hits_radio_station_nz.pdfIn PDF document text
    • https://xirabefutabo.weebly.com/uploads/1/3/5/3/135323672/jigut.pdfIn PDF document text
    • http://xugerovogubex.22web.org/77164756214.pdfIn PDF document text
    • https://cdn.sqhk.co/dameseri/ienjgTn/63274152275.pdfIn PDF document text
    • https://cdn.sqhk.co/zujubokave/jdiczDh/seguwakubomutabufo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rajamuviw.epizy.com/upbeat_workout_music.pdfIn PDF document text
    • https://s3.amazonaws.com/bubodeliza/ziguset.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/blandad_form_subtraktion.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/accessions_medical_history_report.pdfIn PDF document text
    • http://gusizozubamu.epizy.com/bivav.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_off0000df1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF1E 5360 bytes
SHA-256: de8b589cc3e48ce9c4d8e064de069a4de0789423de23f3d398e48c0ada7a842b
font_01_sfnt_off0000f16c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF16C 9964 bytes
SHA-256: a8a9b6df4b239e4518d116ee43c2f44c7ccc5de14a57f9b7cee49c0e4b59c05a