Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec586c28a6b73ab4…

MALICIOUS

PDF

67.0 KB Created: 2021-02-25 17:05:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: b93d491b5b8cb3a93d479aef557f1c18 SHA-1: 2ce3aaef4dcb88661bb7e2d73d4f3fcc48521996 SHA-256: ec586c28a6b73ab4325f3aafe1bda37803442c632066c4ca4ae63caf36ddaaff
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=instruction+commentary+edtpa+early+childhood PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4460057/normal_5fd86f07d1cc8.pdfIn PDF document text
    • http://litazil.22web.org/google_play_store_online.pdfIn PDF document text
    • https://cdn.sqhk.co/nukunudakiju/4Ojjmgj/ninozawa.pdfIn PDF document text
    • http://vipadobotisituz.mygamesonline.org/4663056948.pdfIn PDF document text
    • http://linavaluviriv.getenjoyment.net/borawoxevosigaliginirinaz.pdfIn PDF document text
    • http://rejemezurufoveg.mywebcommunity.org/serid.pdfIn PDF document text
    • http://jokojujut.medianewsonline.com/26122758870.pdfIn PDF document text
    • http://bobejitamatu.iblogger.org/solubility_product_constant_lab_report.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kozogasivufi.myartsonline.com/sapo_y_sepo_un_ao_entero_descargar.pdfIn PDF document text
    • http://pokezuturev.rf.gd/stay_with_me_english_song.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/abdominal_pain_during_pregnancy.pdfIn PDF document text
    • http://nosigegu.onlinewebshop.net/bolufuj.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/jutuposugudobovoresezimok.pdfIn PDF document text
    • https://s3.amazonaws.com/xutomoxu/britax_car_seat_installation_backwards.pdfIn PDF document text
    • https://s3.amazonaws.com/lijulijowivaze/neopets_nc_mall_value_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/nice_guidelines_depression_phq-_9.pdfIn PDF document text
    • http://kukewipomexineb.epizy.com/employee_attrition_and_retention_project_report.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_off0000c972.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC972 5352 bytes
SHA-256: ecfe298353581c4e70ee1f75367596da8a4e71b60c480593ae2766595d4edbd2
font_01_sfnt_off0000db7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB7A 10492 bytes
SHA-256: 0e12237d6a3db19050e78e132991dd57d1442cf245e4f2b017424b791dc4fb62