Malicious PDF — malware analysis report

Static analysis result for SHA-256 c809db59665eea71…

MALICIOUS

PDF

68.3 KB Created: 2021-01-20 15:54:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 0b96e190bdad9e16f9646965fb2fd856 SHA-1: 0a85c1315262b7fde3eca1a44de0f0b26c1a278b SHA-256: c809db59665eea7152999373827c8adeef5778fb7e21318117dae23d2fe4a4af
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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=best%20electronic%20music%20production%20software%20for%20beginners PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4495265/normal_5fddfa0f33dd7.pdfIn PDF document text
    • https://gesogakit.weebly.com/uploads/1/3/4/5/134581759/3005003.pdfIn PDF document text
    • https://cdn.sqhk.co/tufuboloruj/iggPOQR/aol_chat_rooms_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367927/normal_5f97584fcc058.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406775/normal_5fe777d90ea59.pdfIn PDF document text
    • https://cdn.sqhk.co/kixagixupo/c8OOggT/36514935374.pdfIn PDF document text
    • https://xerupirep.weebly.com/uploads/1/3/1/4/131408033/kovig-pupojisu-tajupufe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483589/normal_5fb474b7da37c.pdfIn PDF document text
    • https://cdn.sqhk.co/pasivuzuke/pohajdp/birthday_cake_pic_with_name_and_photo_editing.pdfIn PDF document text
    • https://cdn.sqhk.co/lufelumad/njeMDk1/zufuzobas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386830/normal_5fd90cc23035a.pdfIn PDF document text
    • https://cdn.sqhk.co/letinumi/fjezic3/tidenufivomigowadigavepez.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465719/normal_5fa9b81996e42.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500910/normal_5fec1cbc258fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368782/normal_5fb93a3e29f8b.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/zumomasugipeno/3025084351.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/cinema_hd_v2_apk_ios.pdfIn PDF document text
    • https://s3.amazonaws.com/tosego/zarabiguz.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

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cca1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCA1 5756 bytes
SHA-256: 2d73c218e48456425ad00aade2a7e39c200adfbf8361566188a28dab43617839
font_01_sfnt_off0000e033.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE033 10456 bytes
SHA-256: 0f3a59dced372773fbf78647b3c8556378da7a15e037979236cf839434337924

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