Malicious PDF — malware analysis report

Static analysis result for SHA-256 6730fb38e9907800…

MALICIOUS

PDF

72.4 KB Created: 2021-02-15 23:56:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3ad3f28aace11e531d1d325aa41f440a SHA-1: 0912972ed671816b1b46dcff1447aad437ee1100 SHA-256: 6730fb38e9907800e1f02bc69e6c501fa95f65d7b28663ec236fcd9e833386cd
186 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
  • 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://bologen.ru/wix?keyword=ex+factor+guide+does+it+work PDF link annotation
    • http://saudiautoinsurance.com/verbo_scrivere_alla_forma_passivand4dz.pdfIn PDF document text
    • https://ripukalogud.weebly.com/uploads/1/3/4/3/134391837/xovaxazed.pdfIn PDF document text
    • https://labatozun.weebly.com/uploads/1/3/1/6/131607827/garubovuposozo.pdfIn PDF document text
    • https://bogizironafek.weebly.com/uploads/1/3/1/4/131406395/9634e38756a1b9.pdfIn PDF document text
    • http://berkeciftci.net/catskill_daily_mail_obituary_archivespf39k.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387929/normal_5ff0ee6e99324.pdfIn PDF document text
    • https://malolikekex.weebly.com/uploads/1/3/4/7/134718462/8169414.pdfIn PDF document text
    • http://insitemonitoring.com/529821332928g04b.pdfIn PDF document text
    • http://shoop-ff.ru/xukenipunaxt8iyi.pdfIn PDF document text
    • http://opit.space/grizzly_hills_violin_sheet_music77pxy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387590/normal_5fd0a159a87d8.pdfIn PDF document text
    • http://shoop-fe.ru/happy_birthday_song_in_spanish_mp4606za.pdfIn PDF document text
    • https://sigajijatikad.weebly.com/uploads/1/3/1/3/131379485/ninobupenikodu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453579/normal_5fd8dd9e0b318.pdfIn PDF document text
    • https://komibaxes.weebly.com/uploads/1/3/1/6/131606619/3921007.pdfIn PDF document text
    • http://indonesia2health.online/781603147628jihz.pdfIn PDF document text
    • http://big-ita.space/ff14_feast_of_faminex8ohd.pdfIn PDF document text
    • http://verifedform.com/technical_chart_analysis_bookf381l.pdfIn PDF document text
    • https://vefurubaturuxal.weebly.com/uploads/1/3/0/7/130739777/gikijutar.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dded.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDED 5340 bytes
SHA-256: 6a1b6a4596b4b5b70951696d50e51a6401e19d31c93952375faf51855ffb2646
font_01_sfnt_off0000f046.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF046 10548 bytes
SHA-256: d42a28363647d26d809e6fed8628f65a497b24a947871ea60343d09555b312db