Malicious PDF — malware analysis report

Static analysis result for SHA-256 14ab1f7605e4e197…

MALICIOUS

PDF

79.2 KB Created: 2021-02-24 04:13:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 31e8fe2dd1edac58790218191cb4904f SHA-1: 5478b418bea817cd06d01ce96261aec366ba6b6f SHA-256: 14ab1f7605e4e197b8d05a9cbd4eadb12f8044bad6f9025fa3edbccfa97ff157
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://jottigo.ru/123?utm_term=bowflex+m3+vs+m5+reviews PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388421/normal_5fd30ffd91e05.pdfIn PDF document text
    • https://zapufotipo.weebly.com/uploads/1/3/2/7/132740892/64613290a4.pdfIn PDF document text
    • https://weraxugunelega.weebly.com/uploads/1/3/4/7/134719696/padeposuwuvul_supibunasafape_bamuzisaw.pdfIn PDF document text
    • http://itgermany.net/mavuwufubemiligelegurlemzo.pdfIn PDF document text
    • https://bowonalixatan.weebly.com/uploads/1/3/5/3/135347428/kajolufev.pdfIn PDF document text
    • https://lomelamul.weebly.com/uploads/1/3/5/9/135994015/dowijasafa.pdfIn PDF document text
    • https://babivefe.weebly.com/uploads/1/3/5/3/135312435/7191583.pdfIn PDF document text
    • https://bazopozetera.weebly.com/uploads/1/3/1/6/131637116/6882102.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404955/normal_5fd818aa6a363.pdfIn PDF document text
    • http://vuxokiwi.22web.org/anti_masonic_party_platform.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446015/normal_5fce8b7a8aa7f.pdfIn PDF document text
    • https://lututigit.weebly.com/uploads/1/3/5/3/135335707/ruxije-jowulivedon-rimun.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/fadupazageraf/gefawigowozogulomiwigezak.pdfIn PDF document text
    • https://s3.amazonaws.com/nagev/reaver_wifi_hack_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/lepefi/12th_biology_imp_question.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_off0000f813.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF813 5260 bytes
SHA-256: 7ff2eaef70ac557440ea3f7a9ee422a9a9507d159615eaa97c44de6f7b751928
font_01_sfnt_off00010a09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A09 11068 bytes
SHA-256: 611a3df2ee9fc0618a87c8c1a2e795bd45cc7d85a13ffe1c7fed1a52f479b93d