Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4477d270d07189e…

MALICIOUS

PDF

82.0 KB Created: 2021-03-06 01:12:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f21512c85babfb089fe8848d7e189603 SHA-1: 509cfe38efe67235d622bc5f72a095571c33ab31 SHA-256: e4477d270d07189e2219a764fc02c5f61cb454622c3585d368b55795dffa4996
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jacksth.ru/wix?keyword=bodybuilding+posing+guide+pdf PDF link annotation
    • https://cdn.sqhk.co/joremeve/dZha2ZN/kidz_bop_concert_2018.pdfIn PDF document text
    • http://berozava.iblogger.org/bullworth_academy_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/gewewoturila/GDChbid/7714283121.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486550/normal_5ffa14fb2b359.pdfIn PDF document text
    • https://cdn.sqhk.co/wezupobuwab/Qiihdig/pivawubizuzowezesagilup.pdfIn PDF document text
    • https://cdn.sqhk.co/fafegatoko/gftn7hh/mermaids_1990_streaming_sub_ita.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450512/normal_602f4aba9e51c.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/likerajatob/72658792158.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55d3cac1-0685-49ab-98bc-03365d064a8b/public_administration_meaning_in_marathi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20b9e563-827e-424d-9aca-5009fa811cf9/competency_based_interview_questions_with_answers_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/donukadizolin/patozedolalo.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/72997565354.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17d8908c-134c-424c-93c5-44109cf3047c/fugobububusomuva.pdfIn PDF document text
    • https://s3.amazonaws.com/tinezedu/wokelakazojoji.pdfIn PDF document text
    • http://xojakawarola.rf.gd/60863133879.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4351b74-76f4-4634-aea9-408a65d6fcbf/wefavadobaxanogip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ea92b5d-8242-4894-a026-258787f5e8da/tixezevusapovanekijaripo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e311d44-f734-4098-8754-a8f6428d16d7/sta-rite_e01_error_code.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_off00010430.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10430 5196 bytes
SHA-256: fb443f6e7002831a07fedfeba99ea2f30384def24dc32b04858e945f16b1380b
font_01_sfnt_off000115ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115FF 10884 bytes
SHA-256: 8cee6cf763c71bae0e06eca295bdf4bb303551734bbf6ef83fd8b557f3a3d6f2

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