Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8c7be92366c4876…

MALICIOUS

PDF

73.1 KB Created: 2021-02-14 03:53:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 355985efc6771ab98a720b82830de714 SHA-1: 3797dcdb542741b95ed28afb35b1ec2f30a9d448 SHA-256: e8c7be92366c48760d37585163a034c4317b7419dc0ec287d0e31a3e61b5a862
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/123?utm_term=obturator+internus+massage PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4369784/normal_600184a666d45.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470688/normal_60242f21de26a.pdfIn PDF document text
    • http://bcpzonasegur4viabcp.com/zovelegulavikokifiq89n.pdfIn PDF document text
    • http://pycnidwzxc.info/14466209350ehgpq.pdfIn PDF document text
    • http://dopatixa.22web.org/chemical_bonding_worksheet.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405179/normal_5fc6af57b0ea2.pdfIn PDF document text
    • http://bekavukida.22web.org/do_fuel_injector_cleaners_work_consumer_reports.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xakurukedafa.epizy.com/laminator_sheets_a4.pdfIn PDF document text
    • http://jowuwivipi.rf.gd/bootstrap-_carousel._js_file.pdfIn PDF document text
    • https://s3.amazonaws.com/gisujubolidine/boldon_james_classifier.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/51196914721.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/grade_10_filipino_module_with_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/dorulusof/all_important_amendments_of_indian_constitution.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/lymphoma_contouring_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/purawuma/45343581085.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_off0000e130.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE130 5140 bytes
SHA-256: 87c5bbaddd766b483f144868ddaf10faf35e21edd8f60233f4e517cd20f7f864
font_01_sfnt_off0000f28d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF28D 11012 bytes
SHA-256: f49b9be8e4e2a15e23d6065eee08de92731dfcfc2171009252dd6d401f867684