Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6e11f58d1df7a7e…

MALICIOUS

PDF

72.7 KB Created: 2021-02-26 01:04:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: c73e571f3076f7b880c420864231cc57 SHA-1: e610a77b0a6cae967adc5e60083a2b656aa7219c SHA-256: c6e11f58d1df7a7e65669d78442833b00ff29c080f47327d1449139c8f503aba
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://maypoin.ru/award?keyword=buffalo+ruckus+schedule PDF link annotation
    • http://thelandofbadideas.com/best_ebook_reader_app_androidid8k0.pdfIn PDF document text
    • http://soldatskaya6.ru/does_evening_primrose_oil_work_to_induce_laborh21mn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497344/normal_6032d8c85ef61.pdfIn PDF document text
    • http://dragonflysagewellness.com/83578365882ewsy5.pdfIn PDF document text
    • http://wedipum.mygamesonline.org/war_horse_cast_list.pdfIn PDF document text
    • http://shtangye.xyz/the_complete_guide_to_geniuscbz3y.pdfIn PDF document text
    • https://cdn.sqhk.co/tedigedubemi/iicgdjh/32402037944.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/tesodagiwor/30701906242.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/editable_label_templates_free.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/kakutoxave.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/campbell_biology_11th_edition_online_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gapuruxumeg/97843343151.pdfIn PDF document text
    • https://s3.amazonaws.com/gusule/3905477581.pdfIn PDF document text
    • https://s3.amazonaws.com/sefipa/parts_of_speech_quiz_grade_8.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_off0000dfa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA6 5220 bytes
SHA-256: fd4e8367793d8f30781cf8a0fcfbf71d71703c41a0b4045be9db0f0f4caf1833
font_01_sfnt_off0000f162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF162 10652 bytes
SHA-256: cb1c0561f88c936285d041094b827f67aa5b517634c2021c18ed23ccda9dea52