Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cef9832ca358ca2…

MALICIOUS

PDF

70.6 KB Created: 2021-03-01 08:36:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2f618ffbab616e90d0bf72551648248f SHA-1: e88bd248a1bab20b4ccad0e4be12296fa8434fce SHA-256: 5cef9832ca358ca22fbf487839fdb96a490e654e720998552562949fecc24d98
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://mezovuduw.ru/wix?keyword=paramecium+homeostasis+gizmo+answers+pdf PDF link annotation
    • http://kalidejomepajo.scienceontheweb.net/mixubibapimamogiso.pdfIn PDF document text
    • http://lobabinuladeri.medianewsonline.com/lijid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489415/normal_602b791c4ce1f.pdfIn PDF document text
    • http://dafagaketa.sportsontheweb.net/xojupetonakarixubakow.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499282/normal_5fc81441c4b4f.pdfIn PDF document text
    • http://fuvesozufinefi.medianewsonline.com/kupuse.pdfIn PDF document text
    • https://xidelesa.weebly.com/uploads/1/3/4/4/134498911/guvivoz-tulezas-sijexufa-sobevud.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420915/normal_5ff8c6ce8cc02.pdfIn PDF document text
    • http://kozidozilujivox.getenjoyment.net/jiruwiledaza.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387925/normal_5fde50ed83b46.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/regovadeje/81279231454.pdfIn PDF document text
    • http://geforagegi.atwebpages.com/dirt_devil_handheld_carpet_cleaner.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/major_depressive_disorder_guidelines_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/media_player_classic_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/tenunud/english_pronunciation_guide_for_spanish_speakers.pdfIn PDF document text
    • http://supuwevul.atwebpages.com/konujejeba.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/59691357475.pdfIn PDF document text
    • http://dirulibas.onlinewebshop.net/30748475386.pdfIn PDF document text
    • http://wegugoleta.onlinewebshop.net/jevamukekevodejusari.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_off0000d6e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6E1 5680 bytes
SHA-256: 5270d10f2ae8a05444ec4ec87e476f15d7e1f1b3f43ee6cc99f213b997c6743c
font_01_sfnt_off0000ea2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA2A 10144 bytes
SHA-256: b875e344b76d5485e7aecd80f4041314b2be3ff87ee9ea6f8cdb1ad525ac4740