Malicious PDF — malware analysis report

Static analysis result for SHA-256 430c6f7bc2db3007…

MALICIOUS

PDF

71.6 KB Created: 2021-03-02 04:58:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: c127856788de826ef079c8002f251032 SHA-1: 2e3c08f00c6b0746c5e4e2e395b5055ca976d13e SHA-256: 430c6f7bc2db3007608f4d610c6e81393c507c876353adb29101eafd8ffe27fb
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://zajinet.ru/award?keyword=how+to+take+permit+test+online+in+new+york PDF link annotation
    • http://bio-ita.fun/95120417035d70ob.pdfIn PDF document text
    • https://cdn.sqhk.co/dalubevemex/ijcichj/face_filters_for_instagram_stories.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413004/normal_60144aa12db13.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387711/normal_60052ea1e3216.pdfIn PDF document text
    • https://cdn.sqhk.co/fabozesemi/c6hcibg/best_mp3_player_for_android_without_ads.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449622/normal_5fff60d9a917a.pdfIn PDF document text
    • https://cdn.sqhk.co/pasezateda/ghT8hhG/35499983307.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459921/normal_5fda8cdcc7b52.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/vunizi/norujirilowokovum.pdfIn PDF document text
    • http://fazajupozapufo.rf.gd/lidifuropabofoxupi.pdfIn PDF document text
    • https://s3.amazonaws.com/makixibawumebol/rerojefidumutimotaremali.pdfIn PDF document text
    • http://wotofuwib.epizy.com/39281503518.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_off0000dbf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBF9 5184 bytes
SHA-256: 442eb9ef2e6deca1f34f2dd7dc3c740339caed49c53bf2f61670fc66d3571a4b
font_01_sfnt_off0000ed9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED9E 10404 bytes
SHA-256: d824b1e0e943b17e48ba096d56472cf66567149401d7d1e37e70b29395eb05f7