Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8bd2558973a0b6d…

MALICIOUS

PDF

122.9 KB Created: 2022-09-09 21:12:58 +00:00 Authoring application: nellkaml (via PDF Master 1.0.1) First seen: 2026-04-06
MD5: 2f9c6f6cd245b2589cc8783f267d71da SHA-1: 6edd3bb1f28e3e3499ed3716fdc47f26a7bf9626 SHA-256: a8bd2558973a0b6d33e0e0c5ac4168905238fc86f16bc2e9a9bf9aa3b823266a
164 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0006

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.
  • 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.
  • 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://esecuritys.com/gater.chastisement/gynecological.cockeyed?hydranet=popularized&raggedy=Q1JJQ0tFVCAyMDEyIHBjIGdhbWVzIGhpZ2hseSBjb21wcmVzc2VkIHVwdG8gMTAgbWIucmFyIGNoZWNrZWQQ1J/ZG93bmxvYWR8dUE2WkRCc01ueDhNVFkyTWpZNE1ETTVNSHg4TWpVNU1IeDhLRTBwSUZkdmNtUndjbVZ6Y3lCYldFMU1VbEJESUZZeUlGQkVSbDA PDF link annotation
    • https://fitenvitaalfriesland.nl/wp-content/uploads/2022/09/agnipankh_by_apj_abdul_kalam_pdf_download.pdfIn PDF document text
    • https://serippyshop.com/dbconvert-for-mysql-and-postgresql-crack-hot-cocaine/In PDF document text
    • http://stroiportal05.ru/advert/kannada-sarathi-film-free-portable-download/In PDF document text
    • https://homeworks.ng/wp-content/uploads/2022/09/Alirs232upgradetoolv120_Free_Downloader.pdfIn PDF document text
    • http://kathebeaver.com/?p=11192In PDF document text
    • https://insenergias.org/wp-content/uploads/2022/09/FSX_Flight1_Beechcraft_Super_King_Air_B200_LINK_Cracked_Corepack.pdfIn PDF document text
    • https://susanpalmerwood.com/justkaraoke-2-0-activation-code/In PDF document text
    • https://orbeeari.com/wp-content/uploads/2022/09/dahjer.pdfIn PDF document text
    • https://sumakart.com/harry-potter-1-sinhala-dubbed-kids-movies/In PDF document text
    • http://walter-c-uhler.com/?p=40237In PDF document text
    • https://www.coolshakers.com/wp-content/uploads/2022/09/Neoragex52aofficialExtra_Quality_Fullsetallromsneogeo188gamesrar.pdfIn PDF document text
    • http://charityhamlet.com/?p=16039In PDF document text
    • https://www.warungherbalkita.com/wp-content/uploads/2022/09/HD_Online_Player_Nagina_1986_Hindi_Movie_DvDRip_Xvi.pdfIn PDF document text
    • https://nashvilleopportunity.com/avid-sibelius-v7-1-3-x86-x64-dynamics-ds/In PDF document text
    • http://www.cpakamal.com/proceso-de-liberacion-para-lg-ls450-new/In PDF document text
    • http://newsafrica.world/?p=65220In PDF document text
    • http://pensjonatewa.pl/gt-designer-3-portable-download/In PDF document text
    • https://belz-elektromagie.de/wp-content/uploads/2022/09/Norton_Internet_Security_18_7_2_3_Product_Key_Rar.pdfIn PDF document text
    • http://dirkjuan.com/15708-manual-examen-psicometrico-imss-word-descargar-gratis-trabajos-pdf-exclusive-2/In PDF document text
    • https://fitenvitaalfriesland.nl/wp-In PDF document text
    • https://insenergias.org/wp-In PDF document text
    • https://www.coolshakers.com/wp-In PDF document text
    • https://www.warungherbalkita.com/wp-In PDF document text
    • https://belz-elektromagie.de/wp-In PDF document text
    • http://dirkjuan.com/15708-manual-examen-psicometrico-imss-word-descargar-gratis-trabajos-pdf-In PDF document text
    • http://esecuritys.com/gater.chastisement/gynecological.cockeyed?hydranet=popularized&raggedy=q1jjq0tfvcaymdeyihbjigdhbwvzighpz2hsesbjb21wcmvzc2vkihvwdg8gmtagbwiucmfyignozwnrzwqq1j/zg93bmxvywr8due2wkrcc01uedhnvfkytwpzne1ettvnshg4twpvnu1iedhlrtbwsuzkdmntundjbvz6y3lcyldfmu1vbejesuzzeulgqkvsbdaIn PDF document text
    • https://skilled-space.sfo2.digitaloceanspaces.com/2022/09/nattbla-1.pdfIn 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_off00003205.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3205 84508 bytes
SHA-256: 2b7ba551bea82cc3307397981c1dbeb1b78486f95f2eb14e5e58d4e1b24edb0c
font_01_sfnt_off0000b9f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9F1 83036 bytes
SHA-256: 6d13e73e85a502a13969f6a5eaecd0b275a0868c045f80b7d64ed55d70678261