Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cdb643d78c4503d…

MALICIOUS

PDF

71.4 KB Created: 2021-02-13 16:59:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: b21035ed38d7bd928b52809b97e6b4c1 SHA-1: bb409bf08c6fd9a89b405ec54d16f8184e353fdc SHA-256: 6cdb643d78c4503dfeac6eb48d7d4692c1142ab1448451447a3050014aca91de
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://leonvi.ru/wix?keyword=bahubali+2+movie+watch+online+free PDF link annotation
    • http://lepegumokolato.iblogger.org/dojosipale.pdfIn PDF document text
    • https://lujiwosibe.weebly.com/uploads/1/3/4/0/134040634/aa82e2a2bab5.pdfIn PDF document text
    • https://ronupajowosoza.weebly.com/uploads/1/3/4/8/134871490/4328515.pdfIn PDF document text
    • http://iranianvc.com/genetics_mcqs_and_answerscjpiy.pdfIn PDF document text
    • http://hydrofthol.space/apush_chapter_4_reading_guide_answersaxeaq.pdfIn PDF document text
    • https://nidiladidubupa.weebly.com/uploads/1/3/4/7/134753920/1105921.pdfIn PDF document text
    • http://newberginvestmentproperty.com/10899775077xnupp.pdfIn PDF document text
    • http://vasazuruxu.iblogger.org/campbell_ap_biology_7th_edition.pdfIn PDF document text
    • https://zubisixoligifi.weebly.com/uploads/1/3/4/4/134479514/dirodago.pdfIn PDF document text
    • https://fuwurukuzubefek.weebly.com/uploads/1/3/0/9/130969433/13f4bd42.pdfIn PDF document text
    • https://dubiriji.weebly.com/uploads/1/3/1/4/131406762/zuveteporolafo.pdfIn PDF document text
    • https://xonuguzuv.weebly.com/uploads/1/3/1/3/131382030/kokufatok.pdfIn PDF document text
    • https://gekesixufomipi.weebly.com/uploads/1/3/4/3/134318537/sunusopevojibana.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://guxodolabisiruj.epizy.com/aankhon_aankhon_song_djpunjab.pdfIn PDF document text
    • http://doveweluzabakiw.rf.gd/achieving_our_country_rorty.pdfIn PDF document text
    • https://s3.amazonaws.com/tulosa/dilations_worksheet_k_2.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/2814861863.pdfIn PDF document text
    • https://s3.amazonaws.com/fakuguvil/pugejajuzotiwunobupif.pdfIn PDF document text
    • https://s3.amazonaws.com/najipavez/aiims_pg_2019_application_form_login.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD2D 5300 bytes
SHA-256: c68564c8a711816d9e27866746baba5cd203664f44b403598f66c4d82411e724
font_01_sfnt_off0000df26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF26 10136 bytes
SHA-256: 1e2ec1fbafe26e723f63e389a6a401bae9c4303d84a82f65b0c91129ad7191a1
font_02_sfnt_off000101cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101CF 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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