Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5da722a449da5d7…

MALICIOUS

PDF

44.4 KB Created: 2020-10-09 23:54:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-27
MD5: c0fd6b4dbb481d909f29d4d9053f9090 SHA-1: 3a5046af7e1bd343a1fc080f09208b810e563c6b SHA-256: c5da722a449da5d77c5bf40fc06aae68ee51691b1a1f9d0808a6f8159cc766ce
142 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://gettraff.ru/strik?keyword=neat+video+crack+davinci+resolve In PDF document text
    • https://site-1039297.mozfiles.com/files/1039297/914232663.pdfIn PDF document text
    • https://site-1040250.mozfiles.com/files/1040250/bexavabob.pdfIn PDF document text
    • https://site-1039577.mozfiles.com/files/1039577/bewezeda.pdfIn PDF document text
    • https://site-1037037.mozfiles.com/files/1037037/pogimunoz.pdfIn PDF document text
    • https://site-1036759.mozfiles.com/files/1036759/rimesopa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c0e198a-9b69-4c86-8e34-2eaad56dfea5/biwufapowujudutuvubijo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bc6fa13-d70d-4387-ba74-ede360f387f5/jumunabok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80654dda-8e59-4cdc-a4f4-73e7a1575554/16638370526.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbaecae4-5ba6-4ac5-91c1-32600d14b146/74593879593.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/babcc75e-4d9c-4aba-8b03-b05f1f5e4c91/nerumulesuje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99699207-a749-49ef-b118-27e210f9f5a6/95677539569.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c516b80-5e3a-4d77-9c39-a024007d12bd/3109792877.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83318977-c42d-4293-8b52-b19b56b24976/nubademe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/251f6dec-466b-4b7e-aaed-712bd0a41d13/pigiroki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d90960c-ada4-4393-ab3a-b51c614bfe8d/45311760353.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_off00007106.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7106 5028 bytes
SHA-256: 76e4c8e2a11089e53add5a246040f5ebd493e07b743015642a41fabee5badb1f
font_01_sfnt_off0000823b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x823B 10096 bytes
SHA-256: 0e87430a3d994e5206ac3f11f2fe4ff538384214e0b426c246e312a50a21a851

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