Malicious PDF — malware analysis report

Static analysis result for SHA-256 18c0b04b0b7890f1…

MALICIOUS

PDF

70.2 KB Created: 2021-02-15 20:12:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7c4269e504831ad2ccd35775f7ce6b63 SHA-1: e412a39f6b07b1a296a2c15abdad2af841616035 SHA-256: 18c0b04b0b7890f1da80629f9e11fdcf77326f298c47b70a49fc1fe1ffadbf8b
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://maypoin.ru/wix?keyword=show+box+4.94+apk+download PDF link annotation
    • http://igonlinesupport.com/dogilogepuwabomilojasuja8hf9h.pdfIn PDF document text
    • http://bluebadge-support.com/goxiwuxejoawvvz.pdfIn PDF document text
    • https://zivukiwele.weebly.com/uploads/1/3/4/7/134749768/pemebozedazev_vepusa_miroje.pdfIn PDF document text
    • http://ooovseanalizi.ru/the_burnout_societyc9ioa.pdfIn PDF document text
    • http://tk-time.site/mushtaq_biochemistry_vol_1x35sh.pdfIn PDF document text
    • http://nanolenka.xyz/windows_form_textbox_border_stylera1qp.pdfIn PDF document text
    • http://frukt.fun/59744682617vtdso.pdfIn PDF document text
    • https://kewidanuratug.weebly.com/uploads/1/3/5/3/135323433/7596388.pdfIn PDF document text
    • http://lavkavkusa.store/pijabesowe808ma.pdfIn PDF document text
    • http://qwertyujg.xyz/bevotopesoxajukofox7xmdr.pdfIn PDF document text
    • http://instup.xyz/sukabatujuwopezitz7118.pdfIn PDF document text
    • http://reduslimitalia-ufficiale.site/imperator_titan_datasheet6awlc.pdfIn PDF document text
    • https://pituluwo.weebly.com/uploads/1/3/1/4/131437949/5c1dfb61.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vebenok/28484246654.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/zejigeba.pdfIn PDF document text
    • https://s3.amazonaws.com/rodakarugupoko/chalta_chalta_kannada_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/xuxalivusapexulaz.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_off0000d439.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD439 5516 bytes
SHA-256: d1f95f40e67c127269b2792fea37ab7d7a6f68cb8dd340d4229de03c0b838e04
font_01_sfnt_off0000e718.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE718 10672 bytes
SHA-256: c8101b103dbc549b531c07c94ccbb6baf1880b2d60134f7b44982d3de7923098