Malicious PDF — malware analysis report

Static analysis result for SHA-256 997ac2be668a7730…

MALICIOUS

PDF

66.3 KB Created: 2021-02-11 22:55:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: c3b24339cac41c78e5339d306fd48bd8 SHA-1: db7690fa12b5ae2e46bded82309d6e6afdee0d7a SHA-256: 997ac2be668a7730357d05bd263de94d96a77b6159c16f2f0e944ffe45706f5c
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://baarspo.ru/wb?keyword=bhangra%20mashup%20song%20%20mr%20jatt PDF link annotation
    • http://you-bestshop.xyz/amelia_bedelia_goes_camping_worksheetsrahfp.pdfIn PDF document text
    • http://gmetry.online/spotify_premium_mod_apk_xdab92xe.pdfIn PDF document text
    • https://cdn.sqhk.co/lexelinowe/jdZjans/30889248630.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369495/normal_5ffbb9b7ef7af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485822/normal_6013863d84cf4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470385/normal_5ff322ff330dd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470224/normal_5ff30fff20be4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470014/normal_60048a1d1c1f6.pdfIn PDF document text
    • http://instacopyrightcenter.com/spam_call_blocker_app_reviewsg49lm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474727/normal_5fdf557911b90.pdfIn PDF document text
    • http://xofajenakimexo.iblogger.org/kilimobifeguxale.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451941/normal_5ff086fa629a6.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/xumakomowi/remove_defaulted_student_loan_credit_report.pdfIn PDF document text
    • http://magonusu.epizy.com/wewevukixewufapuxaju.pdfIn PDF document text
    • http://bijasubibivov.rf.gd/template_letter_of_acceptance_for_contract_award.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_off0000c5cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5CD 5328 bytes
SHA-256: c935fcbf880e72575c5458fd8f1cce1391e98981739025c39ec94f9c7d8384ed
font_01_sfnt_off0000d7c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7C8 10264 bytes
SHA-256: 4a58bbcca2a909a6a911f372ef0f9edb0c9a8eb8d3a645834b57e5a08a4335a1