Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3e41d7e56348225…

MALICIOUS

PDF

72.1 KB Created: 2021-02-15 20:23:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 909e267b4dcef8020f0374d204454015 SHA-1: 56c6202a35164d62952fbc4d2052b65cbf21a66e SHA-256: d3e41d7e563482254c88a778295fccd7d9fc847feb146c56e2381f309f92b8d5
196 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/wix?keyword=summertime+saga+guide+pdf+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4459784/normal_5fd1a719c774f.pdfIn PDF document text
    • http://girlita.space/dopoxajebifadujeviwamaroipb3.pdfIn PDF document text
    • https://xomunulozesini.weebly.com/uploads/1/3/4/0/134018183/munimis.pdfIn PDF document text
    • https://sifejolo.weebly.com/uploads/1/3/1/4/131410009/jarutozed.pdfIn PDF document text
    • https://kupujusurigov.weebly.com/uploads/1/3/4/4/134471221/degezez.pdfIn PDF document text
    • https://wojewifonutej.weebly.com/uploads/1/3/4/8/134883442/6725693.pdfIn PDF document text
    • https://lerofiputa.weebly.com/uploads/1/3/4/3/134367001/a5e5b1436498d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370987/normal_601a2e863efd8.pdfIn PDF document text
    • https://lejalebenepuk.weebly.com/uploads/1/3/0/7/130776022/fisulu_zevekose.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/13690255333.pdfIn PDF document text
    • https://s3.amazonaws.com/pajeriramal/apologetic_noun_form.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/investigative_report_format_example.pdfIn PDF document text
    • https://s3.amazonaws.com/sikuva/digital_signage_templates_after_effects.pdfIn PDF document text
    • https://s3.amazonaws.com/susonanezaj/apollo_xp95_addressable_smoke_detector_data_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/fojaxexino/critical_applied_linguistics_a_critical_introduction.pdfIn PDF document text
    • https://s3.amazonaws.com/salade/95826312808.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_off0000db4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB4D 5556 bytes
SHA-256: 02e80499cca92e7b70d6cdfc8cca470f032a1cefbbe5c0270cd5df850f876ed3
font_01_sfnt_off0000ee29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE29 10876 bytes
SHA-256: bbfba331a3f5091b5562699b238717f2b1a710958d5f08d4f92d791429eaf11c