Malicious PDF — malware analysis report

Static analysis result for SHA-256 da875e28453c596b…

MALICIOUS

PDF

72.6 KB Created: 2021-02-15 00:45:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0b4a4392ace77b64cb06f7427dc19969 SHA-1: 07b64dddf686b8de9edc19707a5993e9e413e479 SHA-256: da875e28453c596b89f54b4c8c992bdbcee5621180f629303fbfd449baf7a021
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://bologen.ru/wix?keyword=areas+of+expertise+to+put+on+resume PDF link annotation
    • http://vozujagavif.iblogger.org/training_audience_analysis_template.pdfIn PDF document text
    • https://cdn.sqhk.co/navififoro/hj2jaib/international_business_management_quiz_questions_and_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/kafevinuva/icUBvje/80805356443.pdfIn PDF document text
    • https://cdn.sqhk.co/kaxopejitin/jd5ihOV/laxodurumekuwiluxojuzepig.pdfIn PDF document text
    • https://basopuseg.weebly.com/uploads/1/3/4/7/134703880/80f29e89bf5bba2.pdfIn PDF document text
    • https://cdn.sqhk.co/xilobotinisi/MKYShfL/92446639847.pdfIn PDF document text
    • https://cdn.sqhk.co/waxolulum/RajaIhf/debimajasezejenexuvuwinik.pdfIn PDF document text
    • http://boviriso.22web.org/calendar_2018_marathi_free.pdfIn PDF document text
    • https://cdn.sqhk.co/siloneza/lxVjbic/38348066990.pdfIn PDF document text
    • https://gupolapi.weebly.com/uploads/1/3/4/6/134629895/6160876.pdfIn PDF document text
    • http://vugijow.iblogger.org/converting_cm_to_mm_worksheet_year_3.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/lomuper/peter_pan_jr_musical_script.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/1048511791.pdfIn PDF document text
    • https://s3.amazonaws.com/vonusirukete/wedding_e_cards_templates.pdfIn PDF document text
    • http://jorowiwiboxizuk.rf.gd/3014908280.pdfIn PDF document text
    • https://s3.amazonaws.com/vikukinumet/bath_salts_trip_report_reddit.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_off0000e0d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D7 5072 bytes
SHA-256: 9f95b69a73d7725016a0b576dd67cc19eef1e15faccaae4633f74f0135072df5
font_01_sfnt_off0000f207.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF207 10472 bytes
SHA-256: 1a2bf16870bd3aac014c3b63b7a2fa05061aae69bb1524bc370ab296c70f6110