Malicious PDF — malware analysis report

Static analysis result for SHA-256 c89c71fb1800f7cc…

MALICIOUS

PDF

72.5 KB Created: 2021-02-25 10:59:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 73d6a75bec8731d588f7280c91850a68 SHA-1: 375822c4544b43420f1929d3a6bdd98190da4204 SHA-256: c89c71fb1800f7cca084a77574e4bb5bb731657ba8191ccca2f9e186280b1cfa
134 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/award?keyword=lord+i+need+you+by+chris+tomlin+song+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4425009/normal_5fd37c18593b6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402722/normal_5feb6c6254ecf.pdfIn PDF document text
    • http://xawegap.mywebcommunity.org/27995672841.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493578/normal_6035b35456f3c.pdfIn PDF document text
    • https://laropavo.weebly.com/uploads/1/3/4/5/134585926/038f8775188.pdfIn PDF document text
    • https://xisuludibu.weebly.com/uploads/1/3/5/3/135300694/vogupuzapuzum.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455178/normal_5fe4318e6c7e2.pdfIn PDF document text
    • http://palejep.22web.org/faithful_love_hymn_sheet_music.pdfIn PDF document text
    • http://tisimewifexumi.iblogger.org/gowawekugaboxi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418987/normal_601f63b72a91c.pdfIn PDF document text
    • https://mukeremu.weebly.com/uploads/1/3/4/3/134316251/nezaxed_sakezoz_badegirefapoki.pdfIn PDF document text
    • http://migunovaj.iblogger.org/tabigajavofodigopiru.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421474/normal_5fe44af7dcc76.pdfIn PDF document text
    • http://luxasireku.sportsontheweb.net/40002720062.pdfIn PDF document text
    • https://zalinojawovuga.weebly.com/uploads/1/3/4/8/134886974/sivag.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://jugebifa.epizy.com/36851268891.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifumofelu/4861596461.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/pixezo.pdfIn PDF document text
    • http://kosezofejesuxef.atwebpages.com/what_is_bcm_ar_15.pdfIn PDF document text
    • https://s3.amazonaws.com/tonisefoteka/pilujano.pdfIn PDF document text
    • http://fububosuvakosal.epizy.com/bukexegugimidano.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF28 5508 bytes
SHA-256: 5f5d05f7bae2134b1d5e7aaac7f89b3fabd31b6691dd262b915a00c25297f6a4
font_01_sfnt_off0000e1c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C8 10872 bytes
SHA-256: d500ae0b6a1987dec358c84bb6bce8a297b6bf039836a5c09d87d9b564afc103
font_02_sfnt_off0001061d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1061D 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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