Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd772a217c24389c…

MALICIOUS

PDF

40.5 KB Created: 2020-10-17 09:32:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-18
MD5: 55b8f68dfffc5e77bfcd229796374d13 SHA-1: 6e9e2d43eeb03b01675db73a005b5e503609f731 SHA-256: cd772a217c24389c1dffda15c83619e447602b3b12f6de5aa0447e1d6c9fb672
194 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.
  • 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://ttraff.ru/123?keyword=flight+tracker+application+for+android In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366042/normal_5f875348d5dcb.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/bewomo.pdfIn PDF document text
    • https://mixorone.weebly.com/uploads/1/3/1/4/131438240/pekukipuvi.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/32cb5a67-b584-485e-be04-e451af430285/36060443126.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66760590-df88-4e0b-96bc-3d1edbe3fba9/fefujopikesepum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcab0881-4ecb-45cb-ba2d-13126ac2d015/77520004626.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6025ea9-5559-4c11-aafa-4911a4d999af/laminofunivi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1336/4121/files/zefalevozapaduzitimuro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4224/9621/files/free_eternal_summer_episode_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6176/7061/files/peter_benchleys_creature_trailer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41bcdbb1-b5a6-4b83-a5b2-00ea9d1f65ba/45267135484.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4285ab5-f51c-4768-88be-c80cbc8c41a9/repoxufidoxifuwuzax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc2bae83-a6b7-4d28-a15c-1934fc064af8/92608730531.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7920/2984/files/39749188376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/4439/5930/files/lugodajusoj.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_off000061c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C7 5260 bytes
SHA-256: 4d229a35efc3ec8fa94d5300eaed6f6403047645652935843a3b07555ec6d6b6
font_01_sfnt_off0000739d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x739D 9856 bytes
SHA-256: 1917ce6dd2565dec797b9a67ae6b682d738a16c0f5d7cc5179fb5aed173c4bb8

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