Malicious PDF — malware analysis report

Static analysis result for SHA-256 5826aa7ad0979a0e…

MALICIOUS

PDF

76.9 KB Created: 2021-02-08 19:16:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3c20d9fdefd360bf4da875c0bc4ebcad SHA-1: 634e2330c28a5b7aa8d6278e7c7d6a6f595bd081 SHA-256: 5826aa7ad0979a0ede856d3e24d9f0ac9c38473b84e8d30490c573aca56ce9b1
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/aws?utm_term=alliteration+assonance+and+consonance+worksheet+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4495269/normal_601f95eed8d01.pdfIn PDF document text
    • http://gozipoxeget.iblogger.org/harry_potter_acceptance_letter_party_invitation_template.pdfIn PDF document text
    • https://cdn.sqhk.co/riraxizilob/ijFifyC/dollar_tree_locations_minneapolis_mn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414498/normal_601656155263c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370288/normal_601bf988b8a05.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483337/normal_5fde1783e4a8d.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/vudivuzakal/48265612802.pdfIn PDF document text
    • http://zosejanukapub.rf.gd/zitetetunokexodufuvifuke.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/partnership_deed_contents.pdfIn PDF document text
    • https://s3.amazonaws.com/dorulusof/sorurixamonevut.pdfIn PDF document text
    • http://xovijoj.epizy.com/battle_trip_wanna_one.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/class_5_maths_worksheets_cbse.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/video_twitter._com.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/clases_de_ingles_para_principiantes.pdfIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/formation_auriculothrapie_nantes.pdfIn PDF document text
    • https://s3.amazonaws.com/degisapemifa/65864298192.pdfIn PDF document text
    • http://puzexexaniledow.epizy.com/merizon.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/73536495314.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_off0000eed5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEED5 5172 bytes
SHA-256: 04b8c6c092522a2f271f5e7c9b56a0d067440cb4223c0b85f56bc21e0b28c3ea
font_01_sfnt_off00010071.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10071 11088 bytes
SHA-256: 788fa106ca2df3371accc2654cebe74e88238e266d07379a2ecfa12daf8c50e4