Malicious PDF — malware analysis report

Static analysis result for SHA-256 416e03f76b710889…

MALICIOUS

PDF

68.4 KB Created: 2021-01-18 12:08:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 915648cee0be8649edb6c4824b4538b5 SHA-1: 8dfca615303517d8543def8e70e04bfd48be4928 SHA-256: 416e03f76b710889b9198f8b7e0b02a9007168bb641005cdc35ba4b0fbcc3320
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/aws?utm_term=worksheets+for+4+year+olds+english PDF link annotation
    • https://mapuxotegudu.weebly.com/uploads/1/3/4/3/134356271/jozaka.pdfIn PDF document text
    • https://site-1185553.mozfiles.com/files/1185553/vabewomokopazureti.pdfIn PDF document text
    • https://cdn.sqhk.co/pimidima/ehegfxZ/little_heroes_book_series.pdfIn PDF document text
    • https://xabopefasuliwik.weebly.com/uploads/1/3/4/4/134445681/05b81662.pdfIn PDF document text
    • https://cdn.sqhk.co/tigixexaxi/jg5hbed/vodaz.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/19hjhbW/totafe.pdfIn PDF document text
    • https://rerararomimin.weebly.com/uploads/1/3/1/3/131383042/xekiwezorudofajop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371248/normal_5fb018f069ac7.pdfIn PDF document text
    • https://felipivi.weebly.com/uploads/1/3/1/8/131856333/gixutage_lizoziwebabu_bizegefifivelu.pdfIn PDF document text
    • https://cdn.sqhk.co/xoradofexul/xOhaien/16201937185.pdfIn PDF document text
    • https://cdn.sqhk.co/datolabevev/iWigdxH/krome_studios_kickstarter.pdfIn PDF document text
    • https://fagugirawax.weebly.com/uploads/1/3/4/3/134388021/3595040.pdfIn PDF document text
    • https://site-1173140.mozfiles.com/files/1173140/10682503010.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dixadenidufudu.epizy.com/tenancy_agreement_template_uk_2019.pdfIn PDF document text
    • http://mesuwepuru.epizy.com/47905006702.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_off0000cd71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD71 5436 bytes
SHA-256: 4a04b775d86e6ce1042c4ab6f2914bd0bc27cc4bf023d3ec3f512ba6bf6cca41
font_01_sfnt_off0000e005.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE005 10868 bytes
SHA-256: f3f4b971f294d8c76a4f4d02c5480cf2cd80562c738a03acbba20ccd03f5619e