Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cde84e01266477c…

MALICIOUS

PDF

65.4 KB Created: 2021-02-12 14:00:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e68bfe5d43218f13a64744a1dd3b23ef SHA-1: 592d53fc74fbbba3b4ec5374cd1eb8fe9818c46e SHA-256: 5cde84e01266477c612764b88a62db8ff5f6327176505a55f32f78f036148f73
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/wix?keyword=pricing+guide+template+photography PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4485163/normal_5fe6a0a63e24a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465128/normal_5fdd3efe3b316.pdfIn PDF document text
    • https://cdn.sqhk.co/xafeperale/fLiblZz/29555498298.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405945/normal_5fe0a60d63a7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420020/normal_5fd3365628438.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365582/normal_601b9170bef5c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414357/normal_5fd8ed34c43e0.pdfIn PDF document text
    • https://lepifokofufup.weebly.com/uploads/1/3/4/0/134018260/niwif.pdfIn PDF document text
    • https://cdn.sqhk.co/wibononuve/hjr6pji/hattricks_menu_o_fallon_mo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484103/normal_5fee0bab595ec.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389376/normal_5ffeb202ae9f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418783/normal_60109ae7dfffc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485821/normal_5fcd72e39d401.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/kubafezin/emirates_id_form.pdfIn PDF document text
    • https://s3.amazonaws.com/dorulusof/how_to_gameboy_advance_on_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/96755113682.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_off0000c449.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC449 5412 bytes
SHA-256: e76a2c1ce5a625230cec0de9d6601d2d738b7f41127a45439cc7c7aeceaff13d
font_01_sfnt_off0000d688.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD688 10084 bytes
SHA-256: c580c728394a0a8264c93dfbf30cd0e03047197421ca8c13bb47e5f56721ff98

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