Malicious PDF — malware analysis report

Static analysis result for SHA-256 550b9cce62348c6f…

MALICIOUS

PDF

128.2 KB Created: 2022-06-16 10:45:15 +02:00 Authoring application: rashlaur (via PDF Master 1.0.1) First seen: 2026-04-04
MD5: 4917cb00ba436f90c6e992d622114454 SHA-1: 063acd41a4f46509dc006a5b7bd30aadc110b653 SHA-256: 550b9cce62348c6ff541c2cd0e69f20923db57af9e8487ff19c4090f2d9cb45e
304 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0020

Heuristics 9

  • 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 links to a cracked-software download doorway (base64-obfuscated) high PDF_CRACKED_SOFTWARE_DOWNLOAD_DOORWAY
    PDF's embedded link hides a pirated-software title as a base64 blob inside the URL path/query (and/or carries the ``download|`` doorway-template marker), rather than in visible text. This is a TCPDF-generated SEO doorway that ranks for software-piracy searches and funnels users to fake 'crack/keygen' download pages distributing adware, potentially-unwanted programs, or droppers. The base64 encoding is deliberate obfuscation to evade plaintext lure rules; the PDF itself carries no parser exploit — the risk is the linked crack-download destination.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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.
  • 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://evacdir.com/b3Bjb20gYWN0aXZhdGlvbiBjb2RlIHdpbiBoZXggZnVsbCB2ZXJzaW9ub3B/disobeys/geometrical/heartbreakingly/inbound/ZG93bmxvYWR8WlEzWVdRemJueDhNVFkxTlRNek9Ua3dOSHg4TWpVNU1IeDhLRTBwSUZkdmNtUndjbVZ6Y3lCYldFMU1VbEJESUZZeUlGQkVSbDA?simplifying=claremont&upgradeadvisor= PDF link annotation
    • https://www.mascoutah.org/sites/g/files/vyhlif4671/f/uploads/building_permit_packet_2015-04-07.pdfIn PDF document text
    • https://www.townshipofsugargrove.com/wp-content/uploads/2022/06/janokta.pdfIn PDF document text
    • http://shop.chatredanesh.ir/?p=36975In PDF document text
    • https://nuvocasa.com/wp-content/uploads/2022/06/apostila_mesa_radionica_pdf_17.pdfIn PDF document text
    • https://travellersden.co.za/advert/hamburgdemolitionaddontorrent/In PDF document text
    • https://streetbazaaronline.com/2022/06/16/kitab-sirah-nabawiyah-ibnu-hisyam-pdf-download-exclusive/In PDF document text
    • https://blaquecat.com/community/upload/files/2022/06/werKborgBdo5kMtEDsHf_16_03663c4403b989514232ac26aa9e9758_file.pdfIn PDF document text
    • https://melhoreslivros.online/prototype-full-link-indir-tek-link/In PDF document text
    • https://lll.dlxyjf.com/upload/files/2022/06/pkL6p2RMXK5G3DAfzcfM_16_a8bd0cae03adf396d3ef5870543591f2_file.pdfIn PDF document text
    • http://buyzionpark.com/?p=14602In PDF document text
    • https://karydesigns.com/wp-content/uploads/2022/06/CRACK_SimpleCast_253__Includes_Serial.pdfIn PDF document text
    • https://himarkacademy.tech/blog/index.php?entryid=3128In PDF document text
    • http://www.chelancove.com/miller-manual-de-reparacion-de-automoviles-14/In PDF document text
    • https://shravasti.fastnews24x7.com/advert/daz3d-on-the-beach-free-download-betterIn PDF document text
    • http://www.tutoradvisor.ca/bin-bulaye-baraati-full-movie-free-download-hd/In PDF document text
    • https://serhogarvegabaja.com/olivetti-dcopia-1800mf-driver-21/In PDF document text
    • https://miraclestripbass.com/wp/advert/x-force-product-design-suite-2007-keygen-download-linker/In PDF document text
    • https://germanrootsusa.org/download-ebook-kitab-tanwirul-qulub/In PDF document text
    • http://simantabani.com/akvis-smartmask-9-0-2230-13872-crack-fixed/In PDF document text
    • http://logicbee.biz/blog/index.php?entryid=408In PDF document text
    • https://blaquecat.com/community/upload/files/2022/06/werKborgBdo5kMtEDsHf_16_03663c4403b989514232ac26aa9e9758_In PDF document text
    • http://evacdir.com/b3bjb20gywn0axzhdglvbibjb2rlihdpbibozxggznvsbcb2zxjzaw9ub3b/disobeys/geometrical/heartbreakingly/inbound/zg93bmxvywr8wlezwvdremjuedhnvfkxtlrnek9ua3doshg4twpvnu1iedhlrtbwsuzkdmntundjbvz6y3lcyldfmu1vbejesuzzeulgqkvsbda?simplifying=claremont&upgradeadvisor=In 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
stream_003_off00001eb0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1EB0 120140 bytes
SHA-256: a217f12862e0ff75203bdd4136ca0d68471050be46bb09aed5306898926ffdd4
font_01_sfnt_off0000cc93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC93 76772 bytes
SHA-256: 07ce6fea3c98bf59133021be55ce9147f9c26365efe580a2a4f82130ca697f54