Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca5c45737065b4f4…

MALICIOUS

PDF

72.2 KB Created: 2021-03-01 01:52:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 778825e3be0336b77ef08665c2c32688 SHA-1: 2561b43970558725114962c10c53a2049c6e1eff SHA-256: ca5c45737065b4f4e83bf1a42ef00ea73d9c45376261557c9c9ddae311ce0e8e
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://lozipotod.ru/award?keyword=what+does+sublime+mean+in+there+will+come+soft+rains PDF link annotation
    • https://xapenivivafozeb.weebly.com/uploads/1/3/1/3/131379266/427323.pdfIn PDF document text
    • https://cdn.sqhk.co/rizijuwet/hOh8ge5/2043688160.pdfIn PDF document text
    • https://cdn.sqhk.co/filomada/ggN7hia/strategic_management_book_pearson.pdfIn PDF document text
    • https://cdn.sqhk.co/xekutenupi/jgAjfie/archery_shop_around_me.pdfIn PDF document text
    • http://fotogodopuxet.iblogger.org/auto_call_recording_kaise_kare.pdfIn PDF document text
    • http://tesopinafap.22web.org/bojumitoxitutakivawaraluf.pdfIn PDF document text
    • https://cdn.sqhk.co/segidexu/hirKbhe/how_to_change_voicemail_greeting_on_iphone_11.pdfIn PDF document text
    • https://cdn.sqhk.co/dawafawux/OgiFNCE/superstar_fashion_girl.pdfIn PDF document text
    • https://cdn.sqhk.co/fiwujumejuf/ajfgijb/lasavanukujatirudajufopek.pdfIn PDF document text
    • http://nulonelam.66ghz.com/88172518511.pdfIn PDF document text
    • https://nokejulaju.weebly.com/uploads/1/3/4/6/134696540/wamomijowuvox-jaxagajepeju-soninojolotetu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gebuzabode.epizy.com/oracle_r12_audit_trail_report.pdfIn PDF document text
    • http://posopikepikan.rf.gd/diccionario_espaol_ingls_espaol.pdfIn PDF document text
    • http://nukilaba.myartsonline.com/do_all_oral_b_brush_heads_fit.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_off0000decd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDECD 5504 bytes
SHA-256: c13ac25e45b22a755095743b2f4ef5e16867515520d7790253ba264fa0009ce9
font_01_sfnt_off0000f173.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF173 9980 bytes
SHA-256: c04970a8cd17b3d1b882a2ecb52af536593c50907e87c45e115efbb421af37e8