Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc7721f95d085432…

MALICIOUS

PDF

70.1 KB Created: 2021-02-23 13:55:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b3649fd54b037ca0dba264787d99c4eb SHA-1: a2c9b78ee0ac8748c605badae086faaef3268ea6 SHA-256: dc7721f95d08543268f0107288fc4e31a0b844017aefe27a9054692b79324c1c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://druttle.ru/wb?keyword=best%20glock%2019%20gen%204%20accessories%20sights PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4444377/normal_6030608e66d9a.pdfIn PDF document text
    • http://capridigi.com/89439987804vdmuq.pdfIn PDF document text
    • https://xibijogoxedugo.weebly.com/uploads/1/3/4/6/134662411/gulofif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374178/normal_5fe7463f4f5d3.pdfIn PDF document text
    • https://wefikugozakilo.weebly.com/uploads/1/3/1/0/131069992/notebuwiwiv_rijuti.pdfIn PDF document text
    • https://tunawirivam.weebly.com/uploads/1/3/1/4/131437064/6029380.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382952/normal_5febe0ebdb335.pdfIn PDF document text
    • https://bevufivob.weebly.com/uploads/1/3/4/6/134669401/a56637bf8.pdfIn PDF document text
    • http://profaudit32.ru/iron_maiden_blogspot_discographyqmyjb.pdfIn PDF document text
    • http://dirtygirl.fun/media_geometrica_para_datos_agrupadosay9ir.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/xomudufe/kiwusukerizotatixujit.pdfIn PDF document text
    • http://kukuvil.epizy.com/catalog_design_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/buku_yesterday_afternoon_boy.pdfIn PDF document text
    • http://povalimokuwov.rf.gd/how_to_set_up_a_roaster_oven.pdfIn PDF document text
    • http://kikexufan.epizy.com/fipitogedafepatuximedusak.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_off0000d754.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD754 5468 bytes
SHA-256: 88179968d286b6606404faedda6d485cd1e03336e312ac67a969d0920a4b342e
font_01_sfnt_off0000ea01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA01 9884 bytes
SHA-256: dbc84bd3b6a10ad8e5dfc2aba34bb90bb4543797c4916d84cd0390b95e0368e6