Malicious PDF — malware analysis report

Static analysis result for SHA-256 a387882f9a380683…

MALICIOUS

PDF

66.4 KB Created: 2021-02-13 08:53:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 0dcacf3be9346d3c9c6ef3494a845ed8 SHA-1: 80712004d957b6d0c77a70eaebe89bbf5642b793 SHA-256: a387882f9a380683801842372397451c017478f0a5e419210d0d3fdfd6f1bd2a
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=watch+red+eye+full+movie+online+free In PDF document text
    • https://gedodigu.weebly.com/uploads/1/3/5/3/135312539/1491723.pdfIn PDF document text
    • https://cdn.sqhk.co/jezuleku/jbXurih/77801789787.pdfIn PDF document text
    • https://cdn.sqhk.co/jebanufebejo/icificJ/pibivomitidipeg.pdfIn PDF document text
    • https://cdn.sqhk.co/busosuwik/cihhggd/webekewe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464850/normal_601b38733ebf8.pdfIn PDF document text
    • https://cdn.sqhk.co/kinibemazoz/jfAo7ji/free_daily_forklift_inspection_checklist_template.pdfIn PDF document text
    • https://cdn.sqhk.co/mekerijiwuv/bl7qUgi/break_bricks_with_hand_record.pdfIn PDF document text
    • https://bijejosuti.weebly.com/uploads/1/3/1/6/131637047/pozigetadigenidoso.pdfIn PDF document text
    • https://pebujekug.weebly.com/uploads/1/3/4/3/134380671/6493433.pdfIn PDF document text
    • https://moxizeza.weebly.com/uploads/1/3/3/9/133999163/gupeselirijamoku.pdfIn PDF document text
    • https://cdn.sqhk.co/teganipuputu/p8gfQhh/kirubojenuraginajisof.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450247/normal_5ffadbfd3b504.pdfIn PDF document text
    • https://tatujudipopef.weebly.com/uploads/1/3/4/6/134605081/jakesadumuk_debikijelur.pdfIn PDF document text
    • https://fuvukajewub.weebly.com/uploads/1/3/3/9/133999399/d71abeb.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/lekezaru/spreadsheet_google_login.pdfIn PDF document text
    • https://s3.amazonaws.com/lomiwexuva/ludizufibudiz.pdfIn PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/comments_for_report_cards_for_preschoolers.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/cargese_corsica_travel_guide.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_off0000c9d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9D6 5260 bytes
SHA-256: 8085c22c7fc18572afaf80ebe417828d6f3e7a880528527a9b011863985245e8
font_01_sfnt_off0000dba2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBA2 9644 bytes
SHA-256: 71a5e8326ced52186da3f82beaf7503498e3d6a1e24533caba3ad8acfa5e963f

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