Malicious PDF — malware analysis report

Static analysis result for SHA-256 be743a47d5a6d146…

MALICIOUS

PDF

62.2 KB Created: 2021-02-23 20:37:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: dc0a7e04310830cbb797e79322c6f949 SHA-1: 2d7df80fe260468108aed7b93963dc060ec771f6 SHA-256: be743a47d5a6d1460db852fda3010fda383390db9ee60f9e100d06cddf83c1f4
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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=dom%2527s+guide+to+submissive+training+volume+2+pdf In PDF document text
    • https://jewepixixa.weebly.com/uploads/1/3/0/8/130814248/e2004bf.pdfIn PDF document text
    • http://on24-system.club/auto_clicker_ahkbvtgu.pdfIn PDF document text
    • http://jazesenebadajak.iblogger.org/inspection_report_card_aircraft.pdfIn PDF document text
    • https://kuwobudub.weebly.com/uploads/1/3/4/5/134587752/lejapubininoz.pdfIn PDF document text
    • http://balonedud.iblogger.org/whatsapp_free_apple_4s.pdfIn PDF document text
    • https://ritesevegozuvij.weebly.com/uploads/1/3/1/6/131606822/26ea7e.pdfIn PDF document text
    • https://telonilinip.weebly.com/uploads/1/3/6/0/136050587/mabiwaja_fakelupawisuto_puradu_zimuxadotuno.pdfIn PDF document text
    • https://gazulaloruvuv.weebly.com/uploads/1/3/4/6/134693071/9138238.pdfIn PDF document text
    • http://webmastervlad.ru/51127629353yip0f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://witolav.epizy.com/94150567936.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/65043542057.pdfIn PDF document text
    • http://xenuduximowub.epizy.com/ceros_dan_batozar_free.pdfIn PDF document text
    • http://sivuvupaxiju.rf.gd/shadow_blade_apk_full.pdfIn PDF document text
    • http://notaruk.rf.gd/bizapeferagepapawiga.pdfIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/bumped_idola_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/kirilajekiwudawikitudi.pdfIn PDF document text
    • http://sipisadam.rf.gd/7962010967.pdfIn PDF document text
    • http://zubeleboju.epizy.com/93510741976.pdfIn PDF document text
    • http://doregupubufuve.rf.gd/54244434320.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_off0000b66e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB66E 5724 bytes
SHA-256: 6ce3c653210a84c021aee4feb1a50329ceb903abce0fbedd5ac9851d5d97a79f
font_01_sfnt_off0000c9e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9E5 9860 bytes
SHA-256: b1213628e3a8d7befc25e12594fd2edf4db0ad1722077ae54a56440fd181531f