Malicious PDF — malware analysis report

Static analysis result for SHA-256 182ce18681f007ef…

MALICIOUS

PDF

70.2 KB Created: 2021-02-22 09:59:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9f61ecdb804e44ed50526a5f7952171f SHA-1: 79e6e5f7d4f0693403a14e12a34e29fd2babc304 SHA-256: 182ce18681f007efa84a6cb08797f92f4c9b5cf27a5ff9500b4a93f334020f5b
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://baarspo.ru/wb?keyword=how%20does%20outlander%20book%206%20end PDF link annotation
    • https://zunukewonodej.weebly.com/uploads/1/3/1/4/131453615/8257204.pdfIn PDF document text
    • http://winwites.space/concepts_of_biology_mader_3rd_editionemigk.pdfIn PDF document text
    • https://xagomutub.weebly.com/uploads/1/3/4/3/134321984/xiwubasotozukewa.pdfIn PDF document text
    • http://hh666o.site/femawin4hei9.pdfIn PDF document text
    • https://cdn.sqhk.co/dubutemaruxu/hbkVZhj/31230412941.pdfIn PDF document text
    • http://matcobzor.ru/4_pics_1_word_level_2427gqti3.pdfIn PDF document text
    • https://nabezaxe.weebly.com/uploads/1/3/4/8/134852032/8385275.pdfIn PDF document text
    • http://remontvorot24.com/45912421267r0ebh.pdfIn PDF document text
    • https://varozuwibudod.weebly.com/uploads/1/3/4/3/134327914/vegubar.pdfIn PDF document text
    • http://olipaka.xyz/attestation_fin_de_formation_exemplehn5sm.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/mokixetat/c-8_mass_number.pdfIn PDF document text
    • https://s3.amazonaws.com/zoluwivebiro/alimony_guidelines_in_nc.pdfIn PDF document text
    • https://s3.amazonaws.com/xufoxorog/bukoxuxipibutozoxuba.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/championship_manager_00_01_free_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/wamatasamegu/dikagapemepetow.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_off0000d702.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD702 5228 bytes
SHA-256: d1d11370049f2831ea87b40bd3b529eac58d4f3b213da27dd90128db8a740f3e
font_01_sfnt_off0000e8ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8EA 10380 bytes
SHA-256: 44a32d631903f3ca8da70ed2dc406b67c4dd0d26ec4cc33165d1598ed8882504