Malicious PDF — malware analysis report

Static analysis result for SHA-256 1193014c1c4b26d1…

MALICIOUS

PDF

65.7 KB Created: 2021-02-16 01:41:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 8f67d3297bd6e3849961a7f0d7ae8f06 SHA-1: d934d4695772153fe0ac8b57ac86fbb2303f411d SHA-256: 1193014c1c4b26d1c2a4c47a4da7be201371c9a5d3325fe051d621742b9263af
176 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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/wix?keyword=greek+decoder+math+worksheet+answers+d29 PDF link annotation
    • http://trynutra.shop/robadagixigaxemurotekv7r.pdfIn PDF document text
    • http://hytri.com/85988898709cy9k2.pdfIn PDF document text
    • http://tekchambre.xyz/nulidojofotobutujwkno.pdfIn PDF document text
    • http://instapriz365.site/voguvumigedevu41ost.pdfIn PDF document text
    • http://securityofusersdevicesonline.site/decimals_and_fractions_on_number_line_worksheetse187h.pdfIn PDF document text
    • http://quickpapp.online/32429251336tyx87.pdfIn PDF document text
    • http://in-step.shop/car_expense_excel_sheetkloke.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370989/normal_6016e8b5bd0a0.pdfIn PDF document text
    • http://reznitskygallery.com/kirchhoff_s_law_experimentrvomp.pdfIn PDF document text
    • http://graatorama.fun/download_skateboard_party_2_mod_apkeni3s.pdfIn PDF document text
    • http://kind-insta.site/25667112372dwcfe.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/bomupi/video_editing_for_android_free_apk.pdfIn PDF document text
    • http://ropomojakorano.rf.gd/customer_feedback_template_excel.pdfIn PDF document text
    • http://vekalaluno.epizy.com/sotoxabetugukizugimozeten.pdfIn PDF document text
    • http://vegozamefokim.rf.gd/letterhead_sample_template.pdfIn PDF document text
    • https://s3.amazonaws.com/fefurorobumi/10289155362.pdfIn PDF document text
    • https://s3.amazonaws.com/xijilesuzuxo/new_latest_google_chrome_free_2018.pdfIn PDF document text
    • http://najubizep.epizy.com/formation_auxiliaire_ambulancier_avec_pole_emploi.pdfIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/school_student_accident_report_form.pdfIn PDF document text
    • https://s3.amazonaws.com/tobaziw/vectors_equations_of_lines_and_planes.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_off0000c40e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC40E 5620 bytes
SHA-256: 89b885da043860d3781b48fac43391517aaa0b9a9b2d0bd6fbf0d22d76a2b140
font_01_sfnt_off0000d70f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD70F 10068 bytes
SHA-256: 1e41ece57894a5e5f0003e2cfe7ffbd698ac3a86127672c9aded12f15274261f