Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cd5cdf90419110e…

MALICIOUS

PDF

75.2 KB Created: 2021-02-24 17:01:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4647a4f91c982e365e7fe83ebac8adcf SHA-1: bd58f9d2a83c6d5a93297b207c7e9428f89d12db SHA-256: 3cd5cdf90419110efea482af1d52e0fde0a06e056d7154b5f9ce59e7a63e78fa
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/aws?utm_term=high+standard+serial+number+dates PDF link annotation
    • https://xezafeliwi.weebly.com/uploads/1/3/1/3/131381443/sixixin-butiluf-laridewidubu.pdfIn PDF document text
    • https://kawifapexevudo.weebly.com/uploads/1/3/4/7/134711131/pugon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465131/normal_5fd7d1b40b814.pdfIn PDF document text
    • https://cdn.sqhk.co/fegojujor/vpslijA/45862017933.pdfIn PDF document text
    • https://cdn.sqhk.co/vumuwilaj/bidPifa/mg6071_entrepreneurship_development_mcq_questions_and_answers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497093/normal_6006660e6d08e.pdfIn PDF document text
    • https://cdn.sqhk.co/pivokazi/1po1trq/dead_cells_update_switch_rise_of_the_giant.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463543/normal_5ffebc13e5c11.pdfIn PDF document text
    • https://cdn.sqhk.co/gitaligido/heib0ii/84929832657.pdfIn PDF document text
    • https://cdn.sqhk.co/wixumenez/ieet1id/fox_run_adventure_world.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409103/normal_6028ae2deba46.pdfIn PDF document text
    • https://luwojasog.weebly.com/uploads/1/3/1/3/131380471/7219010.pdfIn PDF document text
    • https://cdn.sqhk.co/pumevigatare/dhczTia/29578402679.pdfIn PDF document text
    • https://cdn.sqhk.co/moxinivo/nbvMyhe/sevuve.pdfIn PDF document text
    • https://dobamadolexazi.weebly.com/uploads/1/3/4/4/134478964/9851563.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e912.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE912 5340 bytes
SHA-256: ff6b0f5ea8b7f6c2dae4e9d0699212cfce7ee454f130b9cf0781e2d65bf0162c
font_01_sfnt_off0000fb0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB0D 10768 bytes
SHA-256: b093b865246d59aa4724c357926d46278614237324d69b84d06cf25fdaa23858