Malicious PDF — malware analysis report

Static analysis result for SHA-256 dce4d7475f70e568…

MALICIOUS

PDF

65.5 KB Created: 2021-02-21 00:47:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9f70b9b3ab3eb1997292a38d3bdafa63 SHA-1: 60c4191233897c7434d4f3ced12ba7b1ef42a28d SHA-256: dce4d7475f70e568a7e3ffc9be49cd6a0a9f80dceef048a6d228d7201d6ed511
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=taft+cruising+guide+to+the+maine+coast In PDF document text
    • https://static.s123-cdn-static.com/uploads/4385636/normal_5ff654b281863.pdfIn PDF document text
    • https://davixiwawelugez.weebly.com/uploads/1/3/4/1/134133028/taziwinetisobuv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460070/normal_602650c842600.pdfIn PDF document text
    • http://femokotafi.66ghz.com/95705407670.pdfIn PDF document text
    • https://cdn.sqhk.co/luzigagoguna/2Qhaihr/mini_bowling_set_walmart.pdfIn PDF document text
    • https://cdn.sqhk.co/mibaforetu/MqRiajc/75342785940.pdfIn PDF document text
    • https://wujuxibivotalo.weebly.com/uploads/1/3/1/4/131453464/dutejuzom_borasaxufek_nawipakop.pdfIn PDF document text
    • https://vebogeperudibot.weebly.com/uploads/1/3/1/4/131455328/7e81973f19b5834.pdfIn PDF document text
    • https://tesutubesonazi.weebly.com/uploads/1/3/4/6/134682982/wubetuxotebib-wupejuromu.pdfIn PDF document text
    • http://ganexofom.iblogger.org/lord_of_the_rings_release_in_4k.pdfIn PDF document text
    • https://cdn.sqhk.co/wupetutigo/ziiDbhi/pixel_gun_battle_royale_gameplay.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426571/normal_6017c528ca3fc.pdfIn PDF document text
    • https://cdn.sqhk.co/damukowabij/ifjamja/17675846345.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460063/normal_60209deadcf52.pdfIn PDF document text
    • https://cdn.sqhk.co/kexofodatop/iidIlIH/cisco_asa_vpn_ldap_security_group.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://noxanaviki.rf.gd/vb._net_for_windows_7_32_bit.pdfIn PDF document text
    • http://wagadepepixapu.epizy.com/bamboohr_performance_review_questions.pdfIn PDF document text
    • http://mulurezo.epizy.com/70477321149.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_off0000c328.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC328 5352 bytes
SHA-256: 0b0222b0efdb15d92ccf23e685259e816360efb77db08327245447539d8dcfee
font_01_sfnt_off0000d533.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD533 9972 bytes
SHA-256: 665e32765250a0028ba2591d958b05700defd8dff083b8c711a189acbaeab831

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