Malicious PDF — malware analysis report

Static analysis result for SHA-256 15d3606407986b94…

MALICIOUS

PDF

83.8 KB Created: 2021-04-06 06:10:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: bf554fb37ab6482fef639b897034f1f0 SHA-1: 2e239d843d5ef523a74c2c551c82a022460db822 SHA-256: 15d3606407986b946c51e58704b066ac00bc89a946572ae41cf97e0a58f66f89
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a fake browser/software-install lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://xezojetit.ru/123?utm_term=chrome+os+iso+for+pc PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4392869/normal_603f461843aa8.pdfIn PDF document text
    • https://cdn.sqhk.co/bogovureg/8aUggZg/ludovico_einaudi_experience_sheet_music.pdfIn PDF document text
    • https://cdn.sqhk.co/putizimetiwe/yHifoih/zixinamopokilepifi.pdfIn PDF document text
    • https://cdn.sqhk.co/talokelom/qiaijge/music_store_near_me.pdfIn PDF document text
    • http://sejerodetupumil.medianewsonline.com/fupuvi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474445/normal_6019a005be28b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://laxukumelukadut.myartsonline.com/mississippi_drivers_license_application.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/pumujunesolevaw.pdfIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/53787329653.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/kannada_film_bulbul_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/ableton_live_fl_studio.pdfIn PDF document text
    • https://s3.amazonaws.com/vinejivunitego/ecology_unit_review_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/gobetufapakoxezejotub.pdfIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/zebevobawozekepinumas.pdfIn PDF document text
    • http://vidoniwofunevan.onlinewebshop.net/basketball_strength_program.pdfIn PDF document text
    • https://s3.amazonaws.com/vetamedisoz/bovos.pdfIn PDF document text
    • https://s3.amazonaws.com/jirebonudur/how_to_carb_cycle_to_get_shredded.pdfIn PDF document text
    • https://s3.amazonaws.com/vovuzize/tds_calculation_sheet_in_excel_format.pdfIn PDF document text
    • http://namepafubi.atwebpages.com/dish_tv_plan_2020_list.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/devil_hunter_lost_ark_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/satuja/7352395662.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010c08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C08 4920 bytes
SHA-256: 6d6b8459ffc00edf89189a2c8b9a74b142096a10a854e4172ab396f3db31461e
font_01_sfnt_off00011c9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C9C 10852 bytes
SHA-256: 44f9d1f35b0f734bdc75587a6967671de10cdbf3614ab10e44ace5f891f4468e

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