Malicious PDF — malware analysis report

Static analysis result for SHA-256 56b6124bac09d670…

MALICIOUS

PDF

72.1 KB Created: 2021-03-03 11:33:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: b51868202d424ed74ccee2136ba79f93 SHA-1: b217569dfe03f6cd7a2daad7be4b3024bb35a89a SHA-256: 56b6124bac09d670881cf6f1681bc6dfe4d0aa7bf85acfecbe1570f7c048404b
126 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
  • 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://mezovuduw.ru/award?keyword=how+to+use+quizlet+live+on+the+app PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4419002/normal_60268bb83f2b0.pdfIn PDF document text
    • https://marotebage.weebly.com/uploads/1/3/4/7/134712984/74666dfb0181e8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375194/normal_6007b3e07dd4d.pdfIn PDF document text
    • https://milalidit.weebly.com/uploads/1/3/1/4/131437162/7484976.pdfIn PDF document text
    • https://tozikogok.weebly.com/uploads/1/3/5/3/135330875/saboxob.pdfIn PDF document text
    • http://bridgecommerce.com/grammar_quizzes_with_answersqa3zt.pdfIn PDF document text
    • http://xsale.trade/3229373046ldqhf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487906/normal_5ff767b48fe94.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464720/normal_5fdaae0b121ad.pdfIn PDF document text
    • http://amorexpo.com/traffic_rider_apk_para_hilesi_indir7ykfo.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/ximupuv/additional_mathematics_revision_notes.pdfIn PDF document text
    • http://botixegaminolol.rf.gd/77515367551.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_off0000dfd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFD5 5100 bytes
SHA-256: f9fc7faa6e5bda25676bb2734afd562ed8abae117720b528dd65ebf10f7b8e90
font_01_sfnt_off0000f14e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF14E 9936 bytes
SHA-256: 403f4e5246ec9618f9d3160afcc92d6f52ed7d5dd991fb317e490b25e608cd0d