Malicious PDF — malware analysis report

Static analysis result for SHA-256 44144c7eae8937cf…

MALICIOUS

PDF

49.2 KB Created: 2020-10-05 07:31:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-05
MD5: 7189dee72f1e384d240974edb14fc1cb SHA-1: 0b8fc9054e7869f29df3c7ee465bd247731846c8 SHA-256: 44144c7eae8937cff44c7a4044089f4ab851f2ab5d44965ba49f811ccd37d6a7
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://cctraff.ru/strik?keyword=act+terapia+de+aceptaci%25C3%25B3n+y+compromiso+con+adolescentes+pdf In PDF document text
    • http://wirikijik.danburydentist.us/uploads/1/3/1/3/131380942/2f657a804d6e521.pdfIn PDF document text
    • http://files.marvinleblanc.com/uploads/1/3/1/3/131381240/xuwogareme_pibir_podelobokijizod_xixixutekabera.pdfIn PDF document text
    • http://files.jackspencer.org/uploads/1/3/0/7/130776790/mulifuwujozik.pdfIn PDF document text
    • https://site-1038908.mozfiles.com/files/1038908/bumap.pdfIn PDF document text
    • https://site-1044474.mozfiles.com/files/1044474/dunomupev.pdfIn PDF document text
    • https://site-1040002.mozfiles.com/files/1040002/tafulakaga.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007ea2.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007ea2.bin)
    • https://uploads.strikinglycdn.com/files/cbc71a86-0a04-40e7-9336-7fcbb7109ef6/setiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02c1f72a-3305-4519-ba40-f3eef9ad8a67/17507131328.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdb3c868-03f6-445d-a26b-ce726afed4c5/fumasesu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9c1eb51-dbb1-4cbc-ab64-cd04a9b40db7/fosedexarepifubaxalisuxo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abc221d8-92c8-434d-a151-5bde3530bbf0/mawaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d91fa41-b58f-44d6-a50e-d76b5b619976/tuwixebavita.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ec3cb86-1a66-4a7a-8afd-f8fb793ae684/noxipelokukiganug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f242c7b-5eca-424a-b54b-32d5d7e32f6f/pidekoses.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 extracted file (font_00_sfnt_off00007ea2.bin)

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ea2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA2 5528 bytes
SHA-256: 63a56d0f0e7e9b04fcba107556fca3745b7d1e823231ca32d28d25f364e8746c
font_01_sfnt_off00009128.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9128 10840 bytes
SHA-256: b53b05350cca5fe9f13d809a04c5d8bfcddbec3716a1a8a8cca318ed55a63a38

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