Malicious PDF — malware analysis report

Static analysis result for SHA-256 44561fae002e731c…

MALICIOUS

PDF

36.7 KB Created: 2020-10-13 07:32:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-11
MD5: 53fee0e4b2709f610bf53ad47755993f SHA-1: 9e3759ac5d42990149ba8d6ad70a7bc2da713891 SHA-256: 44561fae002e731c1fb1aafe6464dd24d7bd0a11d5e290c1c3e18dc964897f4a
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=thermodynamics+solved+questions+pdf In PDF document text
    • https://site-1037896.mozfiles.com/files/1037896/kufiros.pdfIn PDF document text
    • https://site-1043286.mozfiles.com/files/1043286/61643351307.pdfIn PDF document text
    • https://site-1038595.mozfiles.com/files/1038595/roralemiliv.pdfIn PDF document text
    • https://site-1036745.mozfiles.com/files/1036745/35193541039.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/b0246f4b-c12c-4232-9eae-10bd9f7c430a/2274270594.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e293d953-79d4-426a-8fbd-7b27ee4d3fcc/timivugupodetojesumo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ced57e6-8fe9-4ed4-ba1b-ae61a7311cce/29335842256.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c508b8c8-1b61-4fad-8dab-43794b5ef2ad/pubevebemawavobesilidun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c852cc00-7e0d-4e5b-a640-5334aa8f0451/97772636676.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7872/9374/files/38582373350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0439/0307/files/welcome_to_the_world_of_tomorrow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/9124/2397/files/john_locke_impact_on_declaration_of_independence.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_off00004fd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FD8 5632 bytes
SHA-256: 24477f0132a379e4d169b05ac0fd2c1f5c7addfd1d726325773e49e34e7d7139
font_01_sfnt_off000062e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E8 10164 bytes
SHA-256: 1f0154721f9dd9ac7d454c4c428e53fafd91c1086743df98fb6400d792b02a1c

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