Malicious PDF — malware analysis report

Static analysis result for SHA-256 123aca034e5de880…

MALICIOUS

PDF

72.0 KB Created: 2021-02-12 09:03:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3ff98706ca23215126fd8668a63fbe96 SHA-1: 6576ccf3cde4f09eb7bef86686d71539d7952c49 SHA-256: 123aca034e5de880c1734665251b62ac5a9212ab7ea9c266bd031c308e24261f
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://jacksth.ru/wix?keyword=jeppesen+airway+manual+middle+east PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4490720/normal_600e72658018e.pdfIn PDF document text
    • http://rimisirotox.iblogger.org/american_pie_8_fzmovies.pdfIn PDF document text
    • http://afracheat7.xyz/sentences_and_fragments_worksheetsudk9y.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408858/normal_5fecf1a54bb6c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472221/normal_5fd6723054bb2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409257/normal_6019570267d22.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426262/normal_5ffb144f19819.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jirizaxewusi.epizy.com/wedemogorom.pdfIn PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/45952687510.pdfIn PDF document text
    • http://kanosejimu.rf.gd/xazakesadatukalebi.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/refogolujizosifaxefe.pdfIn PDF document text
    • http://zasufogokalo.rf.gd/kimunalatodelavutef.pdfIn PDF document text
    • http://mupopeseri.rf.gd/8_parts_of_speech_quiz_with_answers.pdfIn PDF document text
    • http://tazefuwavubu.rf.gd/gndu_date_sheet_ba_3_sem.pdfIn PDF document text
    • http://banugigo.epizy.com/best_background_images_for_websites_free.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000f10a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xF10A 20244 bytes
SHA-256: bee471ba28817ae14bc5fcb978f33bf5caab4cab83f04306ef0a07280712c77b
font_00_sfnt_off0000bb2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB2E 5288 bytes
SHA-256: 4b9e76447b4fe84469ad2f536e923a20169f7ab392a775ca07bee37b692e6071
font_01_sfnt_off0000cd28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD28 10464 bytes
SHA-256: 20c7749375ec2f5b294bff1250dfaa2f4890b3e598bb9438644182a396ecbaaf