Malicious PDF — malware analysis report

Static analysis result for SHA-256 a89172833e9221b2…

MALICIOUS

PDF

68.0 KB Created: 2021-02-14 05:05:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5a9473babc37361379a0c40f0001a6de SHA-1: ec0682f4fa9044fc48f92c47198147e9c48a0f93 SHA-256: a89172833e9221b2c023e00b33432a627a55a74d16dfe06acaf29270d90bb4a0
126 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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://leonvi.ru/wix?keyword=finley+school+district PDF link annotation
    • https://cdn.sqhk.co/rigizisojix/jciaiba/tifajiwajigepomuwotaj.pdfIn PDF document text
    • http://feyakast.online/957274124051ly8s.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375200/normal_60222a8869e92.pdfIn PDF document text
    • http://enots.space/cours_anglais_debutant9zz9n.pdfIn PDF document text
    • http://hookup154.fun/fepikijabaxexejitefiraligqa9i.pdfIn PDF document text
    • https://jikolugoxolij.weebly.com/uploads/1/3/1/3/131379047/5681852.pdfIn PDF document text
    • https://cdn.sqhk.co/wovenebi/mhbjjha/singtel_top_up_card_expiry_date.pdfIn PDF document text
    • http://podarokinsta365.site/health_assessment_in_nursing_5th_editionogr2q.pdfIn PDF document text
    • https://cdn.sqhk.co/narulaloro/biigigg/bimunekeseritosazotutar.pdfIn PDF document text
    • https://zevebijupaxize.weebly.com/uploads/1/3/4/7/134754497/rakolemoguvetipuroto.pdfIn PDF document text
    • http://safetymirrors.xyz/roskam_airplane_design378qz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415334/normal_5fd1470fdef6f.pdfIn PDF document text
    • https://vukexelisijaka.weebly.com/uploads/1/3/1/0/131070195/nelitu-ramesug-giniliwi-pulikes.pdfIn PDF document text
    • http://zowomojagobipur.iblogger.org/bobol_wifi_wpa_dengan_android_tanpa_root.pdfIn PDF document text
    • https://torevoxun.weebly.com/uploads/1/3/2/7/132712334/lujovasugepow_dijavun_fesetatik_fijujaxug.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/lukepepe/malej.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c304.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC304 4660 bytes
SHA-256: 007029068680f13ac4c6d20673e6cd70dee30de563c0fcfb34f04b89db50981f
font_01_sfnt_off0000d2d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2D1 10044 bytes
SHA-256: ec1f60ac87af592d943c07db21f5172829f2a9525fff1b83f3393a257492a8ce
font_02_sfnt_off0000f51d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF51D 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378