Malicious PDF — malware analysis report

Static analysis result for SHA-256 16903d5b6a4e3748…

MALICIOUS

PDF

126.0 KB Created: 2022-06-09 21:32:31 +02:00 Authoring application: swesal (via PDF Master 1.0.1) First seen: 2026-05-17
MD5: 39344c5626d8d6d6a67630058b186058 SHA-1: 1a452759d2cc85e95e556fbcd182a46f60dbdd09 SHA-256: 16903d5b6a4e37489e1900dd5c06581803c0b4ff2c7119cd055fd7fea7dbdd0e
194 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0015

Heuristics 6

  • 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.
  • Cracked-software lure uses download-gateway redirectors high PDF_CRACKED_SOFTWARE_REDIRECTOR_LINK_FARM
    PDF contains multiple cracked-software/keygen/serial-key lure links together with long encoded download-gateway URLs or known crack-download redirector hosts. This is stronger than generic piracy vocabulary: the document is an SEO lure that funnels users through redirect/download infrastructure commonly used for adware, unwanted software, or droppers.
  • PDF link farm advertises cracked/pirated software medium PDF_CRACKED_SOFTWARE_LURE
    PDF contains many clickable links whose targets use cracked-software, keygen, serial-key, or warez vocabulary. These are SEO-spam lure documents that rank for software-piracy searches and route users to fake 'crack' download pages distributing potentially-unwanted programs, adware, or droppers. 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://evacdir.com/jails/ZG93bmxvYWR8Z0YxWkRoa1lueDhNVFkxTkRjNE1EYzROM3g4TWpVNU1IeDhLRTBwSUZkdmNtUndjbVZ6Y3lCYldFMU1VbEJESUZZeUlGQkVSbDA/?castile=fundamental&RG93bmxvYWQgQXV0b2xhbmRzY2FwZSBQb3J0dWd1ZXMgW1BBVENIRURdRG9=forcible PDF link annotation
    • https://tablerodeajedrez.net/wp-content/uploads/2022/06/Airmagnet_Survey_Pro_8_Crack_Rar_File_VERIFIED.pdfIn PDF document text
    • https://techadarsh.com/wp-content/uploads/2022/06/Adobe_Acrobat_XI_Pro_Serial_Number.pdfIn PDF document text
    • https://kiralikofis.com/the-sims-3-penis-download/?p=30865In PDF document text
    • https://louistomlinsonfrance.com/wp-content/uploads/2022/06/lud_zbunjen_normalan_download_sve_23.pdfIn PDF document text
    • https://starspie.com/wp-content/uploads/2022/06/heavmoq.pdfIn PDF document text
    • https://therookeryonline.com/advert/grand-theft-auto-v-download-free-full-version/In PDF document text
    • https://www.raven-guard.info/downloadsketchbookpro2018portable32bit/In PDF document text
    • http://avc-mx.com/wp-content/uploads/2022/06/blayali.pdfIn PDF document text
    • http://visitingplan.com/wp-content/uploads/2022/06/wisdscor.pdfIn PDF document text
    • https://resistanceschool.info/gordana-kuic-knjige-pdf-download/In PDF document text
    • https://cscases.com/green-hell-update-1-3-2-plaza-fitgirl/In PDF document text
    • https://hanna-kash.ru/?p=7505In PDF document text
    • https://texvasa.com/2022/06/09/reactivate-microsoft-office-equation-editor-3-0/In PDF document text
    • https://pi-psy.org/wp-content/uploads/2022/06/Quimica_Materia_Y_Cambio_Dingrando_Pdf_Download.pdfIn PDF document text
    • https://www.sedaguzellikmerkezi.com/benvista-photo-zoom-pro-v4-1-4-including-crack-iahq76-high-quality/In PDF document text
    • http://aakasharjuna.com/akeytsu-indie-ativador-download-torrent-full/In PDF document text
    • https://vitinhlevan.com/luu-tru/5946In PDF document text
    • https://www.abiabc.com/wp-content/uploads/2022/06/Artas_SAM_61_Crack60_tenjou_caesar_housew.pdfIn PDF document text
    • http://www.studiofratini.com/no-zoomer-2-3-0-2-11/In PDF document text
    • http://classibox.wpbranch.com/advert/apple-imac/In PDF document text
    • http://evacdir.com/jails/zg93bmxvywr8z0yxwkroa1luedhnvfkxtkrjne1eyzrom3g4twpvnu1iedhlrtbwsuzkdmntundjbvz6y3lcyldfmu1vbejesuzzeulgqkvsbda/?castile=fundamental&rg93bmxvywqgqxv0b2xhbmrzy2fwzsbqb3j0dwd1zxmgw1bbvenirurdrg9=forcibleIn 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
🗂 Part of campaign: secureserver.net 1471 samples

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000019dd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x19DD 120140 bytes
SHA-256: a217f12862e0ff75203bdd4136ca0d68471050be46bb09aed5306898926ffdd4
font_01_sfnt_off0000c7c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7C0 76772 bytes
SHA-256: 07ce6fea3c98bf59133021be55ce9147f9c26365efe580a2a4f82130ca697f54