Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3d3f8cbfa85cc15…

MALICIOUS

PDF

69.9 KB Created: 2021-03-04 03:40:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d7772dd1b38da5b089adc27559a60dcf SHA-1: 7ca66e40c1f86609b7e5211f3abf447baac33257 SHA-256: a3d3f8cbfa85cc1562be87e9b5f6f6d896c15a03fb122e68eceb624b9344acf5
126 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
  • 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://gimoguvi.ru/award?keyword=ethical+hacking+course+syllabus PDF link annotation
    • https://nafuvazufu.weebly.com/uploads/1/3/1/4/131407552/buwite_zadevetesalevof.pdfIn PDF document text
    • https://fikakexuk.weebly.com/uploads/1/3/0/7/130775276/xasov-gopokinavibu-semazilurekar-rinoxemuzitazal.pdfIn PDF document text
    • http://digitaloffice24.ru/112478730412p3y8.pdfIn PDF document text
    • http://kakaxazirobolob.iblogger.org/chupke_se_koi_aayega_audio_song.pdfIn PDF document text
    • http://new-leggins.site/73593779528os9gr.pdfIn PDF document text
    • https://daguvosiliwu.weebly.com/uploads/1/3/1/4/131406153/4681190.pdfIn PDF document text
    • http://kopuvimu.scienceontheweb.net/nodole.pdfIn PDF document text
    • https://gazuxupoje.weebly.com/uploads/1/3/4/1/134108966/c8edfe633.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xuxusemo.epizy.com/69374734529.pdfIn PDF document text
    • http://tiworetaganufo.epizy.com/sbop_analysis_ms_office.pdfIn PDF document text
    • http://pujumek.myartsonline.com/french_revolution_third_estate_taxes.pdfIn PDF document text
    • http://satawakerexe.atwebpages.com/38719206725.pdfIn PDF document text
    • http://lumosaneja.onlinewebshop.net/what_is_the_best_alexa_for_music.pdfIn PDF document text
    • http://valajawegob.epizy.com/ghanaian_worship_songs_audio.pdfIn PDF document text
    • http://pabotojixupi.atwebpages.com/fargo_hdp5000_price_in_nigeria.pdfIn PDF document text
    • http://vegiroromofi.rf.gd/lixitadaxemarosadodofi.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_off0000d543.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD543 5324 bytes
SHA-256: 19d9b9af62d4b62267ecb9ea583c1d1fcefad2b7ddb999ce619c053181f85b13
font_01_sfnt_off0000e766.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE766 10396 bytes
SHA-256: b11f0842e71e44d5e81c8a559027b5d8a723c6f5b94ebdc27f7396ddd1b916c9