Malicious PDF — malware analysis report

Static analysis result for SHA-256 07145179a7fbdcd9…

MALICIOUS

PDF

69.6 KB Created: 2021-01-28 19:57:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-31
MD5: bc4932b7205619305014c45def5eec4e SHA-1: 15ea624635ddfe67011ff50788473dcc733c7e92 SHA-256: 07145179a7fbdcd9f54d667aa594992cc4a1c0be3e93af108ab17898efdc55e0
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://leonvi.ru/wb?keyword=tumblr%20search%20not%20working%202019 PDF link annotation
    • http://bcpzonasegurape2-viabcp.com/33_11_kv_substation_training_reportxbdf3.pdfIn PDF document text
    • https://fisadurubimu.weebly.com/uploads/1/3/1/4/131409264/tokerej_zodojumola_kovegu.pdfIn PDF document text
    • https://nulebuset.weebly.com/uploads/1/3/1/4/131411431/wufimikeri.pdfIn PDF document text
    • http://webdefilmizle.com/wusthof_knife_block_set_salesod6l.pdfIn PDF document text
    • https://taxajoberaruvu.weebly.com/uploads/1/3/4/3/134320235/cc9aa74934.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/xamibebulosaxug/76490897497.pdfIn PDF document text
    • http://jitimixilu.epizy.com/ofsted_report_childminder_inadequate.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/newikonexitezufijelizume.pdfIn PDF document text
    • http://fezadup.rf.gd/94344872954.pdfIn PDF document text
    • https://s3.amazonaws.com/setigafat/descargar_craft_the_world_para_android_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/40067822683.pdfIn PDF document text
    • http://vofefigekoloru.epizy.com/anonymox_plugin_firefox.pdfIn PDF document text
    • https://s3.amazonaws.com/xanunafojuloki/auto_start_app_android_6.pdfIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/98905375010.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/impossible_year_sheet_music_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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d141.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD141 5940 bytes
SHA-256: 5b4fd4d70809a7ece31f285f42d121b1301a9aead75e361e2c8c63680976987f
font_01_sfnt_off0000e560.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE560 10724 bytes
SHA-256: ba85d0de25a680d1448a7644f702e9aba8ce642e20fde47b4873cae1cc13a1a9