Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1bcddd8dc660ff0…

MALICIOUS

PDF

70.9 KB Created: 2021-02-27 04:40:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4368219a7d6e666ba3852d5ec85e8d7c SHA-1: 4c9b7cc724746269b707b8bd12ee0f4e365ec89b SHA-256: c1bcddd8dc660ff051674606dce0d402500c8cc31fa195d924f3995fd79c8c70
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wix?keyword=night+owl+8+channel+hd+dvr+manual PDF link annotation
    • http://mishabelle.ru/11404983621n3bmy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486060/normal_5fd2f463ddd18.pdfIn PDF document text
    • https://cdn.sqhk.co/zowonefaso/zidjhgi/kudevemopibu.pdfIn PDF document text
    • https://cdn.sqhk.co/fasisela/idyQiff/pedakiku.pdfIn PDF document text
    • https://cdn.sqhk.co/goxobuve/deie0gj/xubegamu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417208/normal_5fd79e817708f.pdfIn PDF document text
    • https://cdn.sqhk.co/mudifuto/gcCa0Gg/76368853592.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446645/normal_5ffdc5cce54e5.pdfIn PDF document text
    • https://nibuwoxemunovox.weebly.com/uploads/1/3/4/7/134714338/b9a07177.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392659/normal_5fffce5ff1afc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473432/normal_603751d333c3a.pdfIn PDF document text
    • https://cdn.sqhk.co/wezupobuwab/bsqjbjf/kick_the_buddy_forever_unblocked.pdfIn PDF document text
    • https://cdn.sqhk.co/lixipadiwel/ibGehhN/gazoribevirureputimugeke.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_off0000d97b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD97B 5488 bytes
SHA-256: 6f180e5d3910efc91eb0a059c423a84125bc477f04f94d5872120b6964fc7057
font_01_sfnt_off0000ec22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC22 10184 bytes
SHA-256: 247ddc1669dedf0457020c6b48ee7314e882f025abe67ebdec5eafc9971bf23b