Malicious PDF — malware analysis report

Static analysis result for SHA-256 daa30c89fc5dee07…

MALICIOUS

PDF

71.0 KB Created: 2021-02-25 22:57:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5f7d70236ca4868bf716f0d6936df7d3 SHA-1: 6de4f77a1c7e79e34e14662a697a8a005237e010 SHA-256: daa30c89fc5dee0777ae9f2058b378774b5d6ecb43fe8c5699eb36b3ab9552a2
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://baarspo.ru/award?keyword=safety+1st+thermometer+change+to+celsius PDF link annotation
    • http://baykamif.space/center_form_vertically3dhzi.pdfIn PDF document text
    • http://goodik.fun/baby_girl_names_that_go_with_emmafgvfm.pdfIn PDF document text
    • http://kodamup.22web.org/gasteracantha_cancriformis_spiders.pdfIn PDF document text
    • https://cdn.sqhk.co/xewafazuk/jpiaOja/tiburobugalobipobeg.pdfIn PDF document text
    • https://cdn.sqhk.co/tinipuded/6DjdXgc/elite_killer_swat_download.pdfIn PDF document text
    • https://cdn.sqhk.co/sipobufiw/jhOejgB/nukeduxokonupino.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426549/normal_6033659ddb15c.pdfIn PDF document text
    • https://sumejuloluguwir.weebly.com/uploads/1/3/5/3/135390827/8884228.pdfIn PDF document text
    • http://tricitysikhs.com/83177932188nxvcp.pdfIn PDF document text
    • https://nawivavunof.weebly.com/uploads/1/3/4/6/134669961/kamataziwukov.pdfIn PDF document text
    • https://fabupegux.weebly.com/uploads/1/3/4/6/134689396/09421c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380083/normal_6032e3f056417.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/jivala/madaberugukon.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/52790518623.pdfIn PDF document text
    • https://s3.amazonaws.com/rokuwapesu/xopegovebuwanemos.pdfIn PDF document text
    • http://luwatejanif.epizy.com/ubuntu_server_virtualbox_image.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/23789634596.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_off0000d73d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD73D 5552 bytes
SHA-256: b902812ed6b090cdb244206be09a39d06466e96b86fb5f45092daf8820f590c6
font_01_sfnt_off0000ea0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA0A 10812 bytes
SHA-256: 7f44405a2b50c2ef977221168c46b4ff6e179530484d8f23130b973517fcec51