Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c458b70ccc81f81…

MALICIOUS

PDF

72.1 KB Created: 2021-02-13 16:30:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 03c8feacbfdef871d8d58f43771ba31e SHA-1: 07b2e015be8e2c5d1f79acc2b17ba579ade1df12 SHA-256: 7c458b70ccc81f81df5de195df70ef11d2228f24d8d841c2df2c0b2b94e8eaeb
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://bologen.ru/wix?keyword=bruce+springsteen+tour+2020 PDF link annotation
    • https://cdn.sqhk.co/wadelovelo/je4ihhb/roblox_murder_mystery_2_halloween_codes_2020.pdfIn PDF document text
    • https://lirejodeju.weebly.com/uploads/1/3/4/6/134628820/lipebokape.pdfIn PDF document text
    • http://tixshopclub.fun/asbestos_roof_sheet_disposalbdgdr.pdfIn PDF document text
    • http://tujomof.22web.org/gutisaxu.pdfIn PDF document text
    • https://cdn.sqhk.co/pobumepova/Riecgif/meetme_app_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/mugolino/6RSjahj/horizon_blue_cross_blue_shield_nj_direct_doctors.pdfIn PDF document text
    • http://kexejadupuna.66ghz.com/wow_addons_carbonite_3._3._5.pdfIn PDF document text
    • http://allostar.buzz/cloudformation_vpc_template_exampleidvld.pdfIn PDF document text
    • https://nitelozam.weebly.com/uploads/1/3/5/3/135308565/moxidenewumapod.pdfIn PDF document text
    • https://xalitizamer.weebly.com/uploads/1/3/4/8/134863297/fawegibom.pdfIn PDF document text
    • http://kurekarer.22web.org/lazasufitarukajitobuvixog.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vitupofelomar.epizy.com/business_card_photoshop_psd_files_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/27593036848.pdfIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/yasuo_top_challenger_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/dikomavomem/askip_app_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/for_honor_gear_stats_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/73367521665.pdfIn PDF document text
    • http://womunek.rf.gd/personal_reference_sheet_example.pdfIn PDF document text
    • https://s3.amazonaws.com/nitidadufetenu/exponential_equations_worksheet_grade_11.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_off0000de79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE79 5180 bytes
SHA-256: 66b11b2ea47ee6ec6b8e5bcb75b8261cdd0f1734e513924c09c60459babd1f4c
font_01_sfnt_off0000f039.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF039 10324 bytes
SHA-256: 8012ce5b9d8a4a39bf9932f9451cd179944f3b0060ea6e40b23b07ebf3f43bc6