Malicious PDF — malware analysis report

Static analysis result for SHA-256 1384a8567776ce9e…

MALICIOUS

PDF

71.4 KB Created: 2021-02-15 07:05:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: b2ae42f6dc5bdbdde4d0aff0d9251d63 SHA-1: feefe4fd664c83a9cbbb0106d963ed4ae8af835a SHA-256: 1384a8567776ce9e6bc0d159c9036d13f6a4c62df786665a46bc66eed97a3b13
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/wix?keyword=career+matchmaker+skyline+high+school+football PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4469828/normal_60220b81257ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426080/normal_6024c9cd22be7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369765/normal_60023e4f7ae28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452865/normal_6010cbddca19d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493201/normal_5fd18c660a745.pdfIn PDF document text
    • https://cdn.sqhk.co/foroboreb/igwftX3/beholder_zombie_encounter.pdfIn PDF document text
    • https://tupipano.weebly.com/uploads/1/3/4/5/134598946/ludojiw_webokezojo.pdfIn PDF document text
    • https://cdn.sqhk.co/mawejoxejobe/jjFeYhi/jovukatorafosigezus.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446930/normal_5ffa2fbc965a6.pdfIn PDF document text
    • https://buwipifigidorip.weebly.com/uploads/1/3/0/8/130813409/c57c624658cc91.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/wutezigojuxi/91320794835.pdfIn PDF document text
    • https://s3.amazonaws.com/tokudapele/87701870484.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/76114057990.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/sample_narrative_report_on_brigada_eskwela_2012.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/61452773554.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_off0000da95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA95 5504 bytes
SHA-256: ce3d17609075c01e26f28dbff0c287f3f7fa678cc6e627903d18aabd0284ac6f
font_01_sfnt_off0000ed2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED2E 10436 bytes
SHA-256: 83919059785f1250e316d88d1da28b7cf6f37e1b1b694dddf50c2d11460a131d