Malicious PDF — malware analysis report

Static analysis result for SHA-256 99163ba6c1079065…

MALICIOUS

PDF

68.3 KB Created: 2021-02-17 05:36:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e79b128ce0b80e79380392f894cf79dc SHA-1: f38ca7d4963908f956be3c3ef9891122cb49710e SHA-256: 99163ba6c1079065a4473c1436b17e4e48d50440c5c25b813aa97d20946d30d2
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/wix?keyword=rugby+nation+15+apk+full+game PDF link annotation
    • https://kafolegilu.weebly.com/uploads/1/3/2/3/132303068/788417.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417321/normal_5fd285b4cfff4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499979/normal_5fdd317d952ab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450156/normal_5ff5b9421882c.pdfIn PDF document text
    • https://bupotovivo.weebly.com/uploads/1/3/3/9/133986694/998886.pdfIn PDF document text
    • https://suvadigefutom.weebly.com/uploads/1/3/1/4/131406455/pibof.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464301/normal_5fd0e3b9bc8c7.pdfIn PDF document text
    • https://galixasuja.weebly.com/uploads/1/3/4/5/134518214/juzizufuxusuz.pdfIn PDF document text
    • https://tipiwaterexiw.weebly.com/uploads/1/3/3/9/133997214/829de8415.pdfIn PDF document text
    • http://tifeguga.22web.org/where_i_am_quotes.pdfIn PDF document text
    • http://tuwuneluzuso.22web.org/used_dough_roller_sheeter.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450511/normal_6025546b7985b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489853/normal_5fe73db62826d.pdfIn PDF document text
    • http://mawifit.iblogger.org/bomubamasamud.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368999/normal_5fe491ad1a1a3.pdfIn PDF document text
    • https://ronabamipiboti.weebly.com/uploads/1/3/4/5/134598089/tenekukizofut.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zividovapajawuv.epizy.com/consumer_reports_hearing_aids_ratings.pdfIn PDF document text
    • http://tudavoje.epizy.com/vadejaguli.pdfIn PDF document text
    • http://juwesuzibu.epizy.com/tevizenimuxixijib.pdfIn PDF document text
    • http://vumafovixono.rf.gd/megezezabilonujavema.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_off0000cd61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD61 5436 bytes
SHA-256: f509bde7aa83b675d6b0d468a3bb0df1e979ea2db3e85ac1ddbd9050ca60b553
font_01_sfnt_off0000dff8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFF8 10608 bytes
SHA-256: 11c122301b081a205f29b0413e9c7a0c75b195669a3f3e53212a078671928ac5