Malicious PDF — malware analysis report

Static analysis result for SHA-256 369ad28c3f2d2c45…

MALICIOUS

PDF

71.5 KB Created: 2021-02-17 18:45:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: b91c93026d1964c99fc5f95c1ce2fe0f SHA-1: 92835622754dec7ce24d3f1b41e2da53f13c9eaa SHA-256: 369ad28c3f2d2c4559de44e35ec0aba0e5b279be3c6a80340a5df85966385fdd
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://maypoin.ru/aws?utm_term=sabertooth+990fx+r2.0+ram PDF link annotation
    • https://cdn.sqhk.co/sunomedude/Xhgjhvo/nofapabov.pdfIn PDF document text
    • https://cdn.sqhk.co/takabalal/jjcrTji/puvagezoso.pdfIn PDF document text
    • https://cdn.sqhk.co/mekerijiwuv/gwjcpje/porisomokifamubujir.pdfIn PDF document text
    • http://hookup682.site/noburuvone30lvq.pdfIn PDF document text
    • https://lumikefobebodas.weebly.com/uploads/1/3/4/3/134324067/8d6aa124369.pdfIn PDF document text
    • https://ruxabetuju.weebly.com/uploads/1/3/2/7/132740595/2688522.pdfIn PDF document text
    • https://zuvexege.weebly.com/uploads/1/3/0/8/130814851/3125399.pdfIn PDF document text
    • https://kawuzuvom.weebly.com/uploads/1/3/1/3/131379118/9336952.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/toguvaju/board_meeting_minutes_template_free.pdfIn PDF document text
    • http://kiwasebax.epizy.com/male_figure_drawing_model_reference.pdfIn PDF document text
    • https://s3.amazonaws.com/xixonu/what_is_wifi_speed_ac1200.pdfIn PDF document text
    • http://nesitojogosew.epizy.com/9794083626.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/31880353730.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/zebuwesosuwapobeperaja.pdfIn PDF document text
    • https://s3.amazonaws.com/biwuwukesazef/nidamawib.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_off0000d75d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD75D 5568 bytes
SHA-256: 2495610b2dc945519a73e9af419c963c2ee9d576d3684a4ad6bd73e16db49bd3
font_01_sfnt_off0000ea2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA2F 11600 bytes
SHA-256: e4b51b5bcd27e04c2019021cf59c3875609c4e18dbba5be4ab5ed4f0feee65f3