Malicious PDF — malware analysis report

Static analysis result for SHA-256 440d366f1e9230bd…

MALICIOUS

PDF

68.9 KB Created: 2021-03-14 23:05:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 6303971e23873e1f8a26cfcc2f1c2417 SHA-1: 18ffa6246317f9c7da2126ac9464578c6bc67bc9 SHA-256: 440d366f1e9230bdd0e1e1326912295be1cbc6a6d7e7136f90f09d4ee3ab6320
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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 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://resalured.ru/wix?keyword=hover+bot+arena+2+hacked PDF link annotation
    • http://vijepuwobewi.mygamesonline.org/hospital_and_clinical_pharmacy_practical_book_free_download.pdfIn PDF document text
    • http://levantemosaic.com/kijesifuramipar3bam.pdfIn PDF document text
    • http://zdorovienashevse.xyz/893136904183ayem.pdfIn PDF document text
    • http://faxixovojaja.sportsontheweb.net/stock_market_crash_definition.pdfIn PDF document text
    • https://cdn.sqhk.co/mesafovojifo/Zp4kKhj/pafaxufatumasujuxaze.pdfIn PDF document text
    • http://vasazuruxu.iblogger.org/how_to_say_rising_sun_in_japanese.pdfIn PDF document text
    • http://rosutob.getenjoyment.net/goximomawa.pdfIn PDF document text
    • https://cdn.sqhk.co/sevafeluba/Kjf8jd8/30476744834.pdfIn PDF document text
    • http://meblik.su/assign_multiple_roles_in_wordpressoytf7.pdfIn PDF document text
    • http://lugodapamaj.mygamesonline.org/tijamobukuxikufafevelu.pdfIn PDF document text
    • http://uscovidcharts.com/operations_research_and_financial_engineering0h8oa.pdfIn PDF document text
    • http://hightrade.club/dixunugiduwasiravezebaltt309.pdfIn PDF document text
    • http://rowowevu.mypressonline.com/jasadifu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d89a15f7-21b5-45f0-b9b4-bc5b7be68842.filesusr.com/ugd/18e821_6ecc8c2f75e047f391b70c6a68093dd8.pdf?index=trueIn PDF document text
    • http://vobisobopimab.epizy.com/diwotuvubuzupaz.pdfIn PDF document text
    • https://2ac56fc1-f7ee-4366-9cb2-1681469c68ee.filesusr.com/ugd/b914b5_f24bbb578f074b1c945abf90ea0f854a.pdf?index=trueIn PDF document text
    • http://litorow.myartsonline.com/advanced_engineering_mathematics_10th_edition.pdfIn PDF document text
    • http://redikubegoda.epizy.com/inception_hans_zimmer_sheet_music.pdfIn PDF document text
    • http://widepidaba.atwebpages.com/tin_tin_buffet_charlotte_nc.pdfIn PDF document text
    • https://926da24b-d3df-4aea-ac1b-ebdf7359a9e7.filesusr.com/ugd/fef925_7e481f5dfc2a4071b72473e4775ae7fa.pdf?index=trueIn PDF document text
    • https://f26e6bca-ce10-4524-9610-ed5ef7c8d48b.filesusr.com/ugd/ac8c68_df663742f044479cabdc3fa3530785ac.pdf?index=trueIn PDF document text
    • http://xozoput.epizy.com/bupivonekejegegevewimujuj.pdfIn PDF document text
    • http://wodelotozajuta.rf.gd/2605004745.pdfIn PDF document text
    • http://zibelasavu.atwebpages.com/how_do_i_invest_in_a_money_market_fund.pdfIn PDF document text
    • http://sarutufasiko.atwebpages.com/cuales_son_los_tipos_de_funciones_matematicas.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_off0000d165.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD165 5172 bytes
SHA-256: 4a4d565a3fd1d5e898b5440a6103d6880ede2ca7a4ae726e875520ec34358085
font_01_sfnt_off0000e2f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2F8 10120 bytes
SHA-256: 3aa7cfbda766b93683c4dddf8a46f76c742a1f2d294b97e231c529468fc55483

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