Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3a92793f890e841…

MALICIOUS

PDF

67.5 KB Created: 2021-02-05 23:41:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9184beb66e54a12d46c78b1a317a3e73 SHA-1: 3b6b7e8045430c9d9214dd50c754a0b47e8e1df9 SHA-256: f3a92793f890e8410e687bc302c1ebf148c788174a276db8a49409d2eb5ff85d
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jacksth.ru/wb?keyword=bauru%20de%20forno%20c%20pao%20de%20forma PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4503050/normal_5ff2b30019011.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482415/normal_5fdccbbdbacd8.pdfIn PDF document text
    • https://cdn.sqhk.co/tipusuzog/nw0ibwn/volexatatevifozodutes.pdfIn PDF document text
    • https://cdn.sqhk.co/xixujipum/pgggcG7/pafapubosoku.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388279/normal_5fcd0a2508002.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388162/normal_5feb42c9ce9f5.pdfIn PDF document text
    • https://ribovaboj.weebly.com/uploads/1/3/0/7/130775049/fuxodusewolifule.pdfIn PDF document text
    • https://cdn.sqhk.co/kufedefivuvu/hlFighi/download_game_ski_safari_1_mod_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411245/normal_5fde9ef6556b4.pdfIn PDF document text
    • https://cdn.sqhk.co/fenozidu/djbijje/6663309056.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376858/normal_5fe988a22b007.pdfIn PDF document text
    • http://rilizikurejoru.22web.org/chalice_of_opulence_upgrade_guide.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/dezajok/network_architecture_definition.pdfIn PDF document text
    • http://fopagozijudiri.epizy.com/wonjin_sheet_mask.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/dictionary_english_to_punjabi_app_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_off0000ca50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA50 5140 bytes
SHA-256: 9cd8ed27936baae449b9279a855911e7c0623566e83713a4a15f9c1bd567ac3f
font_01_sfnt_off0000dbbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBBE 10972 bytes
SHA-256: 836e0092b1a48b09d6de76254306ec6f41b42d374a0322e917f0ec3cf5551e41