Malicious PDF — malware analysis report

Static analysis result for SHA-256 538c72b11fe9cccb…

MALICIOUS

PDF

72.9 KB Created: 2021-02-21 03:04:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: cef9977bee2ade86c606a753c5ec2644 SHA-1: 0dd783a774454a1e94a937dcfb2200e2ca55294d SHA-256: 538c72b11fe9cccb3ae84d69d6d022dfe540a00153c7cdab191957d5e35e1969
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://druttle.ru/wix?keyword=quiz+bowl+geography+study+guide PDF link annotation
    • http://copyright-help-report.com/misavulogokomufx6ypk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410459/normal_60258d6883c17.pdfIn PDF document text
    • http://leftoutclub.com/college_algebra_5th_edition_beecherkvu6s.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469631/normal_5fda3b513e3f1.pdfIn PDF document text
    • https://womomoko.weebly.com/uploads/1/3/4/8/134848640/sevosodisil_wogil.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366339/normal_5fdcc31fcf189.pdfIn PDF document text
    • http://reduslimitalia-oficial.site/pogadagatagiluwizoberohl014.pdfIn PDF document text
    • https://mipajadotafev.weebly.com/uploads/1/3/2/8/132814286/satafekajobumejamuju.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367625/normal_5fe55a2b8b43b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380536/normal_602413677ccbc.pdfIn PDF document text
    • http://lady-bug.club/kowibedao5iz8.pdfIn PDF document text
    • http://pressit.fun/25703401886xo5yc.pdfIn PDF document text
    • http://top-agent.ru/11236503525phvg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2E4 5444 bytes
SHA-256: b9faf7a63bc59fb2dda2189ca5904c00d7dd3930ef508820bfe4b8ce175f3525
font_01_sfnt_off0000e58a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE58A 10224 bytes
SHA-256: 869e47139bacf1623bb3119f48e4fdbdb1951718ecaa2fb4302fafdc2e7b49f5
font_02_sfnt_off00010861.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10861 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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