Malicious PDF — malware analysis report

Static analysis result for SHA-256 c943e0612fc0b273…

MALICIOUS

PDF

72.9 KB Created: 2021-02-26 15:34:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 8b599a5cb820cb009583cba1d3a8220e SHA-1: 06b268203107017f54649e493bc680bdb82fbe7f SHA-256: c943e0612fc0b273d295f1f8295a2a43a383700837200eb03c925a5bd424c1eb
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://pelibifir.ru/award?keyword=missing+411+map+2020 PDF link annotation
    • http://ronojalad.22web.org/dozajuvarosotarurowi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385635/normal_6017dc390033d.pdfIn PDF document text
    • http://xawegap.mywebcommunity.org/13257804867.pdfIn PDF document text
    • https://cdn.sqhk.co/zudatona/hbOjgdX/30726760243.pdfIn PDF document text
    • http://dizititakozazi.mywebcommunity.org/what_are_the_three_negative_effects_of_volcanic_eruptions.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://liroporuki.myartsonline.com/human_resource_management_ppt_template_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/niwotipugonuvoz/21349114455.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/63858891437.pdfIn PDF document text
    • http://nukilaba.myartsonline.com/do_all_oral_b_brush_heads_fit.pdfIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/vande_mataram_ringtone_ar_rahman.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/99579965795.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_off0000e215.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE215 5428 bytes
SHA-256: 5bcb69915d39b9253b7932848ec862051cae50b0c4d80f565ff3438d8ea8175a
font_01_sfnt_off0000f496.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF496 10184 bytes
SHA-256: 40c40a964cbc7ca80154720622f46d6d2b63069d19a4b040d4eb1794f1c70489