Malicious PDF — malware analysis report

Static analysis result for SHA-256 441678d5d2981ae5…

MALICIOUS

PDF

108.8 KB Created: 2022-10-15 05:47:50 +00:00 Authoring application: briebir (via PDF Master 1.0.1) First seen: 2026-05-05
MD5: a2574c1bee1af223a5d86ec68966c0aa SHA-1: 81e50cf673847eae7c1bc29651a716c2a1ef12c1 SHA-256: 441678d5d2981ae52087f6f7b225c1bc42a3e8f5e41cca7a54d3a5e223e7f3d6
154 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0009

Heuristics 5

  • 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.
  • Cracked-software lure uses shortlink/download gateway critical PDF_CRACKED_SOFTWARE_SHORTLINK_LURE
    PDF visible text advertises a crack, serial number, archive, or pirated-software download and pairs it with a shortlink or encoded download gateway. This is a high-confidence social-engineering carrier for unwanted software or droppers; the PDF itself is not a parser exploit.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://signforcover.com/UmV2aXQgTFQgMjAxOCBLZXlnZW4UmV/activations/immunologists/boob=ZG93bmxvYWR8OTUxWmpaamNYeDhNVFkyTlRjek16ZzBNWHg4TWpVNU1IeDhLRTBwSUZkdmNtUndjbVZ6Y3lCYldFMU1VbEJESUZZeUlGQkVSbDA?dryden=eighteen&mitten=falmouth PDF link annotation
    • https://sipepatrust.org/taare-zameen-par-movie-download-in-telugu-free/In PDF document text
    • https://lectomania.com/wp-content/uploads/2022/10/Download_Midi_Maestro_Full_Version_LINK.pdfIn PDF document text
    • https://news.mtkenya.co.ke/advert/all-star-strip-poker-hard-version-by-alma69-generator-online-hot/In PDF document text
    • https://ourlittlelab.com/hd-online-player-batman-v-superman-dawn-of-justice-english-repack-full-movie-telugu-free-download/In PDF document text
    • https://getwisdoms.com/wp-content/uploads/2022/10/microsoft_encarta_kids_2009_free_download_full_version52http.pdfIn PDF document text
    • https://1w74.com/rslogix5000-emulate-v20-top/In PDF document text
    • https://cdn.lyv.style/wp-content/uploads/2022/10/15074749/Super_Simple_Songs_6album_Collection_Torrent.pdfIn PDF document text
    • https://www.asv-ventabren.fr/wp-content/uploads/2022/10/Pl7_Pro_V4_5_Download_24l.pdfIn PDF document text
    • https://gpapie.com/wp-content/uploads/2022/10/AutoCAD_2017_scaricare_codice_di_attivazione_64_bits_Italian.pdfIn PDF document text
    • http://brotherskeeperint.com/2022/10/solidworks-2013-solidsquad-crack-only-exclusive/In PDF document text
    • http://signforcover.com/umv2axqgtfqgmjaxocblzxlnzw4umv/activations/immunologists/boob=zg93bmxvywr8otuxwmpaamnyedhnvfkytlrjek16zzbnwhg4twpvnu1iedhlrtbwsuzkdmntundjbvz6y3lcyldfmu1vbejesuzzeulgqkvsbda?dryden=eighteen&mitten=falmouthIn PDF document text
    • http://www.tcpdf.orgIn 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/xap/1.0/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://www.aiim.org/pdfa/ns/extension/In PDF document text
    • http://www.aiim.org/pdfa/ns/schema#In PDF document text
    • http://www.aiim.org/pdfa/ns/property#In PDF document text
    • http://www.aiim.org/pdfa/ns/id/In PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000120b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120B 84508 bytes
SHA-256: 2b7ba551bea82cc3307397981c1dbeb1b78486f95f2eb14e5e58d4e1b24edb0c
font_01_sfnt_off000099f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99F7 83036 bytes
SHA-256: 6d13e73e85a502a13969f6a5eaecd0b275a0868c045f80b7d64ed55d70678261