Malicious PDF — malware analysis report

Static analysis result for SHA-256 f22ce08b31237940…

MALICIOUS

PDF

81.6 KB Created: 2021-04-04 15:13:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 5f68ea5b932d696056332ed0b16faad4 SHA-1: 95ad5511527d170f68445a8bf90c934a2006877a SHA-256: f22ce08b3123794006a9003677d1b68a0829f164e6defa71a1714e5341b525b7
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 0.9993

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://gimoguvi.ru/strik?utm_term=dieta+perder+peso+em+1+semana PDF link annotation
    • http://pro-konditer.com/firolujozujiriwotz0u9w.pdfIn PDF document text
    • http://reduslimitaly-ufficiale.site/795320107127hh4z.pdfIn PDF document text
    • https://cdn.sqhk.co/sevigexew/iah1xig/bapute.pdfIn PDF document text
    • http://jugapus.sportsontheweb.net/grade_12_analytical_geometry_notes.pdfIn PDF document text
    • http://shoop-fk.ru/79764609313yp4em.pdfIn PDF document text
    • http://chebsvet.ru/227277057753e59.pdfIn PDF document text
    • http://foselosen.sportsontheweb.net/hindu_festivals_calendar_2020.pdfIn PDF document text
    • http://cashbackmoney.info/ffx_guide_celestial_weaponsmuoew.pdfIn PDF document text
    • http://erogan-columbia.site/cannot_log_into_wd_my_cloud_dashboard96mga.pdfIn PDF document text
    • http://creditpm.com/ti_nspire_cx_ii_t_spiele_pokemon1sxov.pdfIn PDF document text
    • http://olivamebel.com/koberupenotizijdd5.pdfIn PDF document text
    • http://mini-cam1.club/avg_vpn_crack_apkbprwb.pdfIn PDF document text
    • https://cdn.sqhk.co/jujifefa/gjce8hg/hanuman_vs_mahiravana_movie_utorrent.pdfIn PDF document text
    • http://zitokujamu.mypressonline.com/english_barakhadi_chart_download.pdfIn PDF document text
    • http://remontlegko.info/448209699523y5il.pdfIn PDF document text
    • http://nibakelenixezas.getenjoyment.net/94743070642.pdfIn PDF document text
    • https://cdn.sqhk.co/pikukafil/hgjg9if/67461882285.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/zemigiduwagafu/75964258048.pdfIn PDF document text
    • http://nekexixi.epizy.com/periodic_table_definition_chemistry.pdfIn PDF document text
    • http://gekikebikujog.rf.gd/rocket_league_nintendo_switch.pdfIn PDF document text
    • http://dilezupuforew.epizy.com/apa_citation_format_example_bibliography.pdfIn PDF document text
    • http://katufimeg.rf.gd/12718083487.pdfIn PDF document text
    • https://s3.amazonaws.com/negonanopix/wozilimiduvekiku.pdfIn PDF document text
    • https://s3.amazonaws.com/dobikasukavu/zoradifogabebatewamed.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/pokemon_drawing_book_online.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_off0000fe23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE23 5124 bytes
SHA-256: 87c1de8e85b82a15b0e8c669daa7586a81867c8720cbf4d4101385722f3ecc52
font_01_sfnt_off00010f7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F7D 12348 bytes
SHA-256: 596135cb974948c3820d3215610d67bdb8099904bd50d57a33e7fa775d045d0e

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