Malicious PDF — malware analysis report

Static analysis result for SHA-256 33d46063e852eb14…

MALICIOUS

PDF

73.0 KB Created: 2021-02-15 12:24:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0af7985fc56f373746d061bc453579ae SHA-1: bd255eb59c8f9be8361e0719d0e9723f2506565d SHA-256: 33d46063e852eb14e0fcb846225d9e375f4e0c086d0e57bee4f99c7ee4a6a040
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=chapter+2+principles+of+ecology+reviewing+vocabulary+answers In PDF document text
    • http://pressit.space/update_mysql_database_php_formnpxj4.pdfIn PDF document text
    • https://cdn.sqhk.co/ganidabizi/djcyfih/did_it_again_shakira_kid_cudi_lyrics.pdfIn PDF document text
    • http://shopsmmv.site/76843170905p9ihh.pdfIn PDF document text
    • https://cdn.sqhk.co/bomemenun/iejchb2/extinction_definition_used_in_a_sentence.pdfIn PDF document text
    • http://nat-yoga.space/91480595406cxqiz.pdfIn PDF document text
    • https://zolaverapudo.weebly.com/uploads/1/3/0/8/130874102/xididumu.pdfIn PDF document text
    • https://cdn.sqhk.co/fanekizesedi/GYhdjib/name_game_song_for_kindergarten.pdfIn PDF document text
    • http://ilmahli.com/95625614924vlegu.pdfIn PDF document text
    • https://mepodatadun.weebly.com/uploads/1/3/1/4/131452799/14c5d24fd4c.pdfIn PDF document text
    • https://pelimabogex.weebly.com/uploads/1/3/4/6/134685965/likokizax_nulepat.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tajisogekumobuk.epizy.com/estimating_square_roots_worksheet_doc.pdfIn PDF document text
    • http://benifolagalat.epizy.com/fumusukerenirev.pdfIn PDF document text
    • http://gadoriwufes.rf.gd/wagarufililipax.pdfIn PDF document text
    • https://s3.amazonaws.com/pulavokaxe/wigaxarefunelemuvox.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/71185532878.pdfIn PDF document text
    • http://zeduneku.rf.gd/game_total_conquest_hack_offline_apk.pdfIn PDF document text
    • http://voxuluvaj.epizy.com/badminton_game_video_free.pdfIn PDF document text
    • https://s3.amazonaws.com/seriposuj/cvs_caremark_prior_auth_form_for_humira.pdfIn PDF document text
    • https://s3.amazonaws.com/biwuwukesazef/47977290732.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_off0000dfad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFAD 5708 bytes
SHA-256: 30b0184d70cdd2cdf636fb185f4426719ba0c6c86495e70d694b817f90ac39bc
font_01_sfnt_off0000f333.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF333 10328 bytes
SHA-256: c64b5f4cdb4051f3a7f04bd1054b102cb222dd56a0b82f66d2e8c41a5d646d9a