Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcc630c32393a1ae…

MALICIOUS

PDF

68.0 KB Created: 2021-02-16 22:49:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 22a7da5520b26aeb5b1609885a079629 SHA-1: 6a9e7d6ff757366ac9ac8bd223e932178b1f4d8f SHA-256: fcc630c32393a1aee6927dba5df10edbb51ce9b3685a3e200d8b9d81d3a8079a
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/wix?keyword=assurance+underwear+xl PDF link annotation
    • https://nokogijesa.weebly.com/uploads/1/3/1/4/131452879/kuwel_gebelamaxa_zopovifiwol_welunapara.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408596/normal_5fc6d69c1ef63.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393785/normal_600fb941d1b79.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488555/normal_600299c357008.pdfIn PDF document text
    • https://dumetokewip.weebly.com/uploads/1/3/4/3/134394823/mizekevila.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378155/normal_60085db6cd017.pdfIn PDF document text
    • https://woluxubofij.weebly.com/uploads/1/3/1/3/131383763/bolutamexefe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467017/normal_6020fadbab50a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470027/normal_5ffb622469fe5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446647/normal_5ff50bca33e50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487413/normal_5fe671e6ac573.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381738/normal_6021a81736217.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bojefej.epizy.com/earthing_sheet_uk.pdfIn PDF document text
    • http://tuwetixa.epizy.com/27608633792.pdfIn PDF document text
    • http://juxalabubifogis.rf.gd/weather_report_longowal_punjab.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_off0000ccec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCEC 5084 bytes
SHA-256: 1189336900c7ef170bb13bdd5af41b93cd5cd731e2941f8a16780f9652a48731
font_01_sfnt_off0000de55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE55 10860 bytes
SHA-256: 37cc456bc668a4173fd3693c60c6999896b293626a2660d6abb1d27104b865bd