Malicious PDF — malware analysis report

Static analysis result for SHA-256 6de4569f6ffa330e…

MALICIOUS

PDF

73.8 KB Created: 2021-02-25 03:55:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: f612face9d252be847c1945dde2a393e SHA-1: dd862c14d5e6873268c0698edd06402c0e128e21 SHA-256: 6de4569f6ffa330e4f51990dda88c17837c37be8654ac7e134a5f7b506f5fc56
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jacksth.ru/award?keyword=python+programming+fundamentals+class+11+pdf PDF link annotation
    • https://fedalovojuxunod.weebly.com/uploads/1/3/0/7/130775560/sonifaligapif-budijab.pdfIn PDF document text
    • http://nextauto02.ru/tabomewidomososumojolpk89s.pdfIn PDF document text
    • https://jotonude.weebly.com/uploads/1/3/1/3/131398177/revotulonaki-lagosudevefuvux-gevosagew-safosewiwo.pdfIn PDF document text
    • http://samoe-samaya.ru/60738673253lbwbr.pdfIn PDF document text
    • https://mipijanifubu.weebly.com/uploads/1/3/0/7/130739658/nobuwavapiwudabuxal.pdfIn PDF document text
    • http://astropsychology.website/hide_and_seek_online_mod_apkk8ru7.pdfIn PDF document text
    • http://dommasters.site/welilenepinabizodipifo1rwvb.pdfIn PDF document text
    • https://widowajezow.weebly.com/uploads/1/3/4/5/134584852/7713762.pdfIn PDF document text
    • http://idealica-italiaoficial.site/charoen_pokphand_indonesia_annual_report_2018jkebf.pdfIn PDF document text
    • http://pedrons.space/7379795661653vin.pdfIn PDF document text
    • http://sun-italy.space/rental_agreement_template_docvrhj3.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/bupijila/82830169536.pdfIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/what_does_dolls_mean.pdfIn PDF document text
    • https://s3.amazonaws.com/xapota/xutufiluwug.pdfIn PDF document text
    • https://s3.amazonaws.com/bisapovepizaj/vomejesuzawex.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_off0000e2dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2DC 5724 bytes
SHA-256: ebfb65823e3bbbe5ce9f3b8c78f475818c75b8e2b43ec3d5387b96a770ca86eb
font_01_sfnt_off0000f642.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF642 10532 bytes
SHA-256: 210ca2847ba6b81ab24f6a03d59bc7d8c109ae568732147976d27d07250430ec