Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d9419b969ef044…

MALICIOUS

PDF

69.3 KB Created: 2020-12-14 19:34:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: 6adf54718b6f08915eaa4828c1363a0a SHA-1: 4abea32f7ecda72f752fe2b2bbc00168b060a2ac SHA-256: c5d9419b969ef04417cf16041d5b7946eb4abdfb8dd8f592fb3155923f6a32f8
254 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ggtraff.ru/123?utm_term=the+100+characters In PDF document text
    • https://cdn-cms.f-static.net/uploads/4450260/normal_5fc032e135376.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461511/normal_5fb3f12957c10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379848/normal_5f905f761a970.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369166/normal_5f8e1783c0c50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413467/normal_5fb8cc543daed.pdfIn PDF document text
    • https://bizevino.weebly.com/uploads/1/3/4/3/134320064/noxevoj.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/babetafaperaxov/xerajiveve.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/oracle_sql_database_tutorial.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5135716f6d44b07d97325/t/5fc88b07ee804a17a1d4739b/1606978317516/3274248975.pdfIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/liduki.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/1739794297.pdfIn PDF document text
    • https://s3.amazonaws.com/voropa/curso_robotica.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/taliwapibuge.pdfIn PDF document text
    • https://s3.amazonaws.com/kosamupim/jifusaginomu.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_off0000d4d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4D3 4996 bytes
SHA-256: ca7214b686903ee6159d6011c4d16066c77a2ee0b7ffdea138b5f03d01e8427f
font_01_sfnt_off0000e5ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5CA 10120 bytes
SHA-256: d12bbd9e155b7ca50f8c2f236b84cdd18b0cc55e92c09a309a995dad036e58ca

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