Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ecf7487baa13985…

MALICIOUS

PDF

73.0 KB Created: 2021-03-02 07:17:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a30d6b5dcbffd559f6ed3e8cc7b55127 SHA-1: d523a9a09a89182d666d3c9ddc4cb2809a24a398 SHA-256: 3ecf7487baa13985376f41eaa3b39c88d57f3d16d8147f75263c98ae5ac00f1c
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://gimoguvi.ru/strik?utm_term=ncaa+banned+substances+pre+workout PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4409411/normal_5ff5ef1dd6b5a.pdfIn PDF document text
    • https://cdn.sqhk.co/zidomirit/ddeicjb/79264109110.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408336/normal_601b074178a14.pdfIn PDF document text
    • http://sunakijabe.sportsontheweb.net/zawuvavomozawitub.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469126/normal_5fd67efaeb72d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457279/normal_602df6cfb0099.pdfIn PDF document text
    • https://cdn.sqhk.co/xovatapegil/cOjizVz/15572584084.pdfIn PDF document text
    • https://cdn.sqhk.co/gulizate/gijhiii/bare_knuckle_fighting_championship_2020.pdfIn PDF document text
    • http://ganitigusawev.mygamesonline.org/algebra_lineal_es_lo_mismo_que_espacio_vectorial.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446502/normal_602fd7ab40180.pdfIn PDF document text
    • https://cdn.sqhk.co/xolanikipiz/hdNTEUq/star_wars_bacta_tank_toy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368954/normal_6020848b1539f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451212/normal_5fd904163f94e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bexukavibume.myartsonline.com/artemis_fowl_book_1_cover.pdfIn PDF document text
    • http://futakanawus.onlinewebshop.net/unapproachable_east_3.5.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_off0000e1c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C5 5300 bytes
SHA-256: a7b5c557858549dda040e15188480e113d90d06d5c4d3b428861b44493b98a1a
font_01_sfnt_off0000f3ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3ED 10376 bytes
SHA-256: dfa669797a3b178bf9cb6eee118499d9f0af165133871482b50afcd58d6038f8