Malicious PDF — malware analysis report

Static analysis result for SHA-256 b815fc8e605d2efb…

MALICIOUS

PDF

70.1 KB Created: 2021-03-10 08:41:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: def89694c358c46323f95d9c8a543e22 SHA-1: 74ac957a7e33da4dc4ccfa2fa6a18d39afb7bd98 SHA-256: b815fc8e605d2efb601dd6f366bfca5aab3a7599dd8a53f414a74a9d70f1197b
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://dugedepap.ru/award?keyword=facilities+and+equipment+of+arnis+pdf PDF link annotation
    • https://cdn.sqhk.co/bexamajuw/hahbij8/39670318402.pdfIn PDF document text
    • https://bowixasexagat.weebly.com/uploads/1/3/4/0/134041419/7880975.pdfIn PDF document text
    • https://cdn.sqhk.co/powosinubuk/SUih1V4/9105078624.pdfIn PDF document text
    • https://kukibutojiw.weebly.com/uploads/1/3/0/7/130775835/fifiwepa.pdfIn PDF document text
    • http://forecast.bet/894998065674vvu9.pdfIn PDF document text
    • https://cdn.sqhk.co/gowexenopa/sij0zgd/private_number_app_for_whatsapp.pdfIn PDF document text
    • http://wbigs.space/jepevimefajomoxm53bt.pdfIn PDF document text
    • http://ses-sanobrabotka.ru/calvin_klein_sneakers_size_guiderklty.pdfIn PDF document text
    • http://priz24.site/place_of_adverbs_exercisesjnpj3.pdfIn PDF document text
    • http://matroskin.space/arputha_theevu_movie_video_songsxkhfi.pdfIn PDF document text
    • http://cabinetshub.xyz/progressive_verb_tenses_anchor_chartvr5ge.pdfIn PDF document text
    • http://vladport.ru/69332152887xdh52.pdfIn PDF document text
    • http://arenda-comp.space/sarifagozotdg.pdfIn PDF document text
    • http://profapp.pro/what_do_the_words_of_the_divine_mercy_chaplet_meanubp8k.pdfIn PDF document text
    • https://visofamawuri.weebly.com/uploads/1/3/2/3/132303269/mujar.pdfIn PDF document text
    • https://cdn.sqhk.co/fevivesuxofo/dhh3iaa/woodsmith_magazine_back_issues.pdfIn PDF document text
    • https://cdn.sqhk.co/zosaremarebi/xgghfjd/jufoxisami.pdfIn PDF document text
    • https://cdn.sqhk.co/gutinisiv/alifyNg/strategic_human_resource_management_mello_ppt_chapter_1.pdfIn PDF document text
    • http://bodyita.space/xezukujadotuganafefin3xpp.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dutijut.epizy.com/chubb_eil_proposal_form.pdfIn PDF document text
    • http://wudilegabe.epizy.com/98108708497.pdfIn PDF document text
    • http://tinulelor.rf.gd/91751943937.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_off0000d659.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD659 5384 bytes
SHA-256: 9e932d28304ccdfea254821da040677140425753e87551b9f7067c34e6e8a78a
font_01_sfnt_off0000e891.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE891 10044 bytes
SHA-256: d26784e255ed67abacc595bea6c5d8f4e5762840479df5ad54a2a06c2b4c8cd5

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