Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c2cad30703fd277…

MALICIOUS

PDF

77.8 KB Created: 2021-05-13 19:40:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 638349194928bd559ee274b8078a12d5 SHA-1: e6403db52114ec9d1f2fb2f6c835194010ed55b5 SHA-256: 3c2cad30703fd277ddadb71e60335d42978a507cbbae7a11a79a58e054183faf
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://midufefew.ru/strik?utm_term=dewalt+safety+glasses+home+depot PDF link annotation
    • https://cdn.sqhk.co/vakanaju/hhcbhiU/dokukipujisomebo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393022/normal_5fe176ce86ede.pdfIn PDF document text
    • https://cdn.sqhk.co/vekuperik/cifjagh/56785739960.pdfIn PDF document text
    • https://cdn.sqhk.co/xamitarerivu/x8geXNQ/21251320404.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497395/normal_5fe19f615f060.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458628/normal_60465b2f38469.pdfIn PDF document text
    • https://nixixufusolawig.weebly.com/uploads/1/3/4/8/134882604/guzovese.pdfIn PDF document text
    • http://nozekem.iblogger.org/51515306484.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372378/normal_60645ffd31086.pdfIn PDF document text
    • https://pujawemufupu.weebly.com/uploads/1/3/2/6/132680931/wuvukonuzitu.pdfIn PDF document text
    • http://kukushka.space/kitchenaid_cooktop_red_knobsosj34.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369933/normal_6006c50e366fb.pdfIn PDF document text
    • http://pafiwuz.66ghz.com/noxezowatufipifilel.pdfIn PDF document text
    • http://natnat.fun/rapodibipologukopimi05w99.pdfIn PDF document text
    • https://godowipi.weebly.com/uploads/1/3/4/5/134520373/nukufuxi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388158/normal_6007df40020ca.pdfIn PDF document text
    • https://cdn.sqhk.co/wisivelu/2jasHgh/37791661435.pdfIn PDF document text
    • https://ruwezowoja.weebly.com/uploads/1/3/0/7/130776808/vuzub-venejoxafitusas-xuripelogewon-banikoru.pdfIn PDF document text
    • https://fuwefepitebu.weebly.com/uploads/1/3/4/7/134709748/wureviwagede.pdfIn PDF document text
    • http://mastera-saydinga.ru/how_much_is_ashton_kutcher_net_worthuwyzt.pdfIn PDF document text
    • http://prostosite.site/zojopeptb0pt.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bebewijelukisa.epizy.com/zabovinugizibute.pdfIn PDF document text
    • http://wixuvixur.rf.gd/bebidas_alcohlicas_definicion.pdfIn PDF document text
    • http://nijorirofebonin.epizy.com/gufuzego.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B7 5552 bytes
SHA-256: 1a96612b4fed322ae2ac7a3576a61ad3138cc3c95e3d2ac4bba80181136a5eb4
font_01_sfnt_off00010695.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10695 10348 bytes
SHA-256: 854a91ddb7f8afab0fb8b1fad291a19bbf0a84ab0203be8a7cba2706efebe87f

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