Malicious PDF — malware analysis report

Static analysis result for SHA-256 58e549c489c64bc0…

MALICIOUS

PDF

78.0 KB Created: 2021-03-04 01:50:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: b72ea7e31a6a48e3c5728b45bebde4c0 SHA-1: 1993109556c5b848c053d9922b5b84ca7dab0e63 SHA-256: 58e549c489c64bc0df5847b7ef90aa63edcd2af68ad0161747f1db6eff59598e
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/award?keyword=star+finder+app+android+free PDF link annotation
    • https://pozefixinez.weebly.com/uploads/1/3/1/4/131454190/3536550.pdfIn PDF document text
    • https://livesagu.weebly.com/uploads/1/3/1/4/131437401/cc08de65.pdfIn PDF document text
    • https://fejavemupim.weebly.com/uploads/1/3/5/3/135314508/0f3cbd0ce2afb.pdfIn PDF document text
    • https://fofalada.weebly.com/uploads/1/3/5/9/135968840/wesatiset-xavurir.pdfIn PDF document text
    • https://cdn.sqhk.co/rosavuzezig/bUjeigo/goguwinepex.pdfIn PDF document text
    • https://wipiduwofudozi.weebly.com/uploads/1/3/4/5/134588456/9271807.pdfIn PDF document text
    • https://sexuviruzimi.weebly.com/uploads/1/3/2/8/132814305/b9c4740571d3c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484632/normal_5ff2c2f213157.pdfIn PDF document text
    • https://gilinolejokakis.weebly.com/uploads/1/3/4/6/134632374/5717a9e0.pdfIn PDF document text
    • https://paxowudozu.weebly.com/uploads/1/3/6/0/136095727/digogawopufoxajubila.pdfIn PDF document text
    • https://cdn.sqhk.co/wetaxawirewu/hePtmib/21751283444.pdfIn PDF document text
    • https://fomunova.weebly.com/uploads/1/3/4/6/134684458/jutedofavuv.pdfIn PDF document text
    • https://cdn.sqhk.co/vawadawuleja/ifp2hds/91850963076.pdfIn PDF document text
    • https://banafovogakake.weebly.com/uploads/1/3/5/3/135326552/1075590.pdfIn PDF document text
    • https://cdn.sqhk.co/kajipazuto/tk3ichd/21758639194.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/rawesaragegugar/lizavet.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/9400304234.pdfIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/asp._net_mvc_action_form.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_off0000f649.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF649 4928 bytes
SHA-256: 449fee360cc82636b9133f78d07f16969ef18f522d0e17232948e61e74d16819
font_01_sfnt_off0001071f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1071F 10476 bytes
SHA-256: 22f959659b94767a548e2a48e753e88ab5b400e186c47149f344991701c6c4d3

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