Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b8a62c869c2b5e…

MALICIOUS

PDF

72.6 KB Created: 2021-02-24 09:51:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e39412363de845391816b3fd935b706c SHA-1: 686c9bb5733ed6edf0d6ddc1571281be850e17d8 SHA-256: 72b8a62c869c2b5e150b77ca87ebcfae90198a811a8283eb82409cfe0d6cb425
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://baarspo.ru/wix?keyword=fisher+price+pirate+ship+1994 PDF link annotation
    • https://cdn.sqhk.co/bepemuno/2hgIr1s/47654443400.pdfIn PDF document text
    • https://dusonibegoxat.weebly.com/uploads/1/3/1/3/131380688/zafepasubita-botegaku-tosukewud-dogemobebig.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426686/normal_5ffaeb22b012f.pdfIn PDF document text
    • https://mejotozoferu.weebly.com/uploads/1/3/4/8/134866749/8458016.pdfIn PDF document text
    • https://nijasofefovo.weebly.com/uploads/1/3/4/7/134719995/4159309.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418566/normal_6016d79127cf7.pdfIn PDF document text
    • https://gofolepoxi.weebly.com/uploads/1/3/4/8/134882907/vovobu.pdfIn PDF document text
    • https://cdn.sqhk.co/relulapezele/oigZTgc/purple_and_blue_tie_dye_background.pdfIn PDF document text
    • https://fobepuwup.weebly.com/uploads/1/3/1/0/131070598/9af697e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369656/normal_601b2f0e4ef95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457572/normal_60100420e0006.pdfIn PDF document text
    • https://cdn.sqhk.co/xisiwuba/XqLjjgc/my_cat_virtual_pet_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472506/normal_6019481333dab.pdfIn PDF document text
    • https://zatuzura.weebly.com/uploads/1/3/1/4/131453499/1918e127f7fa.pdfIn PDF document text
    • https://cdn.sqhk.co/natefisaka/ififXji/hidden_agenda_pure_romance_video.pdfIn PDF document text
    • https://zapirugitoz.weebly.com/uploads/1/3/4/5/134508168/4316270.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366952/normal_6009de470c1ac.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vepilezora.epizy.com/valebimevoluxefefonagoned.pdfIn PDF document text
    • http://rupeguv.epizy.com/74264944205.pdfIn PDF document text
    • http://getetir.epizy.com/7814463062.pdfIn PDF document text
    • http://votofeki.epizy.com/jewelry_logo_design_template.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_off0000dfe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFE1 5240 bytes
SHA-256: 0e464d56d931ca4e9ad7e2eb25fbaf2d505afa44c4f0a4798272cb808d4089dc
font_01_sfnt_off0000f1b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1B6 10292 bytes
SHA-256: 5dd3e7e7bb4b703dd8be18f7819b8a81fc12c8de24503a71b939536122ba2222

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