Malicious PDF — malware analysis report

Static analysis result for SHA-256 72bd5fb945a2ab64…

MALICIOUS

PDF

49.4 KB Created: 2020-10-05 12:14:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: 1cbd0bb9bd14c5bfbe172c2c21fb8181 SHA-1: e5cd573793913c9bc34182801e60ae43f1c05691 SHA-256: 72bd5fb945a2ab64dc2ece548915d49cbc00667ad1a9252679e15a0efc0d8f02
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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/strik?keyword=exercices+logarithme+n%25C3%25A9p%25C3%25A9rien+terminale+es+pdf In PDF document text
    • https://site-1036698.mozfiles.com/files/1036698/paraviduwosi.pdfIn PDF document text
    • https://site-1043519.mozfiles.com/files/1043519/porawog.pdfIn PDF document text
    • https://site-1038717.mozfiles.com/files/1038717/61505512999.pdfIn PDF document text
    • https://site-1043287.mozfiles.com/files/1043287/24650166897.pdfIn PDF document text
    • https://site-1045398.mozfiles.com/files/1045398/85213407300.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0485/0050/6785/files/north_mason_high_school_washington.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/0172/8157/files/questra_income_calculator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9007/6067/files/48665623689.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a46511fd-9dc2-4b23-a8d3-69abb5f65611/muluvugetugotujexoxexa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30b8d7b6-5352-46f6-a492-4f8c8f4d849e/66507509369.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51249acd-c2af-45c2-9c10-050f52007cc0/12887109287.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/038e2429-d90b-4bea-9e56-c5f1c229e2f3/kuwewafopawipixawokelawiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb9be125-9e7c-4311-8c27-acfa7b60b9f0/fuwikusused.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42ea770a-ca65-4c91-b8cc-e556c8baabc2/50289705751.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000058bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58BD 5524 bytes
SHA-256: 162c38b5a59cf7f1dcff5ec87c3372d641e127308355bb8a4dfd7ac7ad553196
font_01_sfnt_off00006b1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B1A 11972 bytes
SHA-256: d22befd71b33dba333cdb519b3e95f28faff6de13fbe35bfca02fead9aa68eaa
font_02_sfnt_off0000928a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x928A 16104 bytes
SHA-256: 349214dd5eb26598b8962e97ce659abc65a5e3f0ca71ceacffb397d237a2cb95
font_03_sfnt_off0000a764.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA764 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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