Malicious PDF — malware analysis report

Static analysis result for SHA-256 897193f5afaccb5c…

MALICIOUS

PDF

73.0 KB Created: 2021-02-25 13:42:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a68765c6ed1f9edeb80bbea7df368961 SHA-1: 489e7bcb539c9a5f67dd2138e182a6afc6ca6fa3 SHA-256: 897193f5afaccb5caa402e959b498fc0b44c92c4ca9c84c0859bced9c30b558f
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/award?keyword=stock+market+open+on+friday+july+3+2020 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4383924/normal_5fc92a9520376.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420260/normal_5ff2ca7b58643.pdfIn PDF document text
    • https://cdn.sqhk.co/rekubapapup/ehcTOjh/94793057616.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413982/normal_601b5f655d4ef.pdfIn PDF document text
    • https://cdn.sqhk.co/vudebalox/mij4jfp/pugam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482402/normal_603261b089ba4.pdfIn PDF document text
    • http://figimumagoko.mygamesonline.org/how_to_clean_samsung_washer_filter_top_loader.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367919/normal_601003140a768.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380707/normal_60217f7cd09e7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376600/normal_60059aa10597f.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/wutisigila/67657067924.pdfIn PDF document text
    • https://s3.amazonaws.com/zuniverijesud/28512827028.pdfIn PDF document text
    • https://s3.amazonaws.com/nodetuxapabara/68206673728.pdfIn PDF document text
    • https://s3.amazonaws.com/kalanejaxutilif/jkbose_date_sheet_of_12th_class_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/xotefosodebese.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_off0000dd1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD1F 5908 bytes
SHA-256: 7d56cf3a4b51ae185ac41ba6d536e4491d4ec472cddd6f18a9bbc9f4053bbeb1
font_01_sfnt_off0000f141.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF141 11212 bytes
SHA-256: c295e9351fcfb20d6d02bec1b6c2c83b768c750df5c587af55a77cd3069291a1