Malicious PDF — malware analysis report

Static analysis result for SHA-256 e393063a9cb614c6…

MALICIOUS

PDF

67.4 KB Created: 2021-03-17 21:00:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 57efc31d1f02d555833b61ad0484de86 SHA-1: d463d6dc9e9756b0294a377b2c0d45bca32b98f6 SHA-256: e393063a9cb614c68558d5704ad52b4f8a461658ede6a46051af81e5a41f87ca
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://golowaki.ru/award?keyword=assr+1218+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388052/normal_60261fa5d5e5b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366665/normal_5fccbfa2b607c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454286/normal_6036ccf41d692.pdfIn PDF document text
    • https://mijeridofuba.weebly.com/uploads/1/3/4/6/134677835/vigozozimajebigexer.pdfIn PDF document text
    • https://demaxezobenila.weebly.com/uploads/1/3/1/8/131856353/1b9973192.pdfIn PDF document text
    • https://dulupuwo.weebly.com/uploads/1/3/5/3/135393712/mizovarolizo.pdfIn PDF document text
    • http://todayit.pro/addams_family_musical_soundtrackktepz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369495/normal_5fe5c7bd37cfa.pdfIn PDF document text
    • http://fusekimutoxi.sportsontheweb.net/rodolimokiresukexojili.pdfIn PDF document text
    • http://copyrightmediahelp.com/jaxukuravadepakodurorqt5wp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380413/normal_5ff621ca4e5b2.pdfIn PDF document text
    • https://mulanazujejuxu.weebly.com/uploads/1/3/4/8/134855463/zifidaratux_mavabo.pdfIn PDF document text
    • https://tariwina.weebly.com/uploads/1/3/0/7/130739483/bitimaju_pameradud_jezomefude_widatu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479254/normal_6011d9c6951e2.pdfIn PDF document text
    • http://gogotmif.space/65092244147ln865.pdfIn PDF document text
    • http://viwavidif.getenjoyment.net/panofigolowase.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453914/normal_5fd88a3a9a837.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421767/normal_601d2c727d035.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lavoxema.onlinewebshop.net/verbal_analogy_reviewer.pdfIn PDF document text
    • https://5926284e-b61c-4ed0-95e5-27b9feedd2c3.filesusr.com/ugd/50c35f_d786644110584ca7a008426d2d872162.pdf?index=trueIn PDF document text
    • https://13adc596-845f-4f4a-b539-e2c04a0a4b5a.filesusr.com/ugd/6e2da7_a8ee4d5ad9264ab78081f74ac027d3b6.pdf?index=trueIn 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_off0000c974.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC974 5160 bytes
SHA-256: c5dd2b6999ad8132ec37ec80017c87aa5609ff2ce1c30983fc0d585f255b77e9
font_01_sfnt_off0000db23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB23 11112 bytes
SHA-256: f8683e3ddb2a1bc7f1fb532aaa31f436a06f99214ab9db41e03d4ad828adb531

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