Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8b3e126885fd6ef…

MALICIOUS

PDF

139.2 KB Created: 2022-06-11 06:55:26 +02:00 Authoring application: flemyene (via PDF Master 1.0.1) First seen: 2026-04-06
MD5: 5f9d7c390b6958c8a63d1ae5d3cc0474 SHA-1: 8c2fbde669b8d79e2712abc77ee813dc60089cb1 SHA-256: a8b3e126885fd6ef5d422122c00a65ab01e328963d920d402467b28213bd1914
234 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0009

Heuristics 7

  • 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.
  • 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/ncoa/absences.fairmont/obsidian/restrictedly/QmFnaGRhZGkgUWFpZGEgUGRmIEZyZWUgRG93bmxvYWQQmF/retail.ZG93bmxvYWR8WUw0WkRGMWVYeDhNVFkxTkRnNU16RTVNWHg4TWpVNU1IeDhLRTBwSUZkdmNtUndjbVZ6Y3lCYldFMU1VbEJESUZZeUlGQkVSbDA.villains PDF link annotation
    • https://sumsoftime.com/wp-content/uploads/2022/06/lorigar.pdfIn PDF document text
    • https://everyonezone.com/upload/files/2022/06/OeEoPSAQSjeIs6WHwqmz_11_1a5751fb88cbb1a647c0bdfdbaf1e6f3_file.pdfIn PDF document text
    • https://gimgame.ru/super-contra-game-free-download-full-version-for-windows-7/In PDF document text
    • https://shielded-caverns-03125.herokuapp.com/Arabic_Korg_Pa3x_Set_rar.pdfIn PDF document text
    • https://www.repaintitalia.it/heroes-of-might-and-magic-v-tribes-of-the-east-no-cd-crack-rar/In PDF document text
    • https://voltigieren-bb.de/advert/microsoft-autoroute-2011-truck-crack-torrent-download/In PDF document text
    • https://tcgworldwide.org/wp-content/uploads/2022/06/darkhal.pdfIn PDF document text
    • https://vast-forest-50723.herokuapp.com/HD_Online_Player_TE3N_Full_Movie_Download_In_Hindi_Hd_1080p.pdfIn PDF document text
    • https://cromaz.com.br/upload/files/2022/06/jV4L6IBrZTQdkHWgrimB_11_1a5751fb88cbb1a647c0bdfdbaf1e6f3_file.pdfIn PDF document text
    • https://telebook.app/upload/files/2022/06/hG7m7N3PA7OAeFuCVoQn_11_1a5751fb88cbb1a647c0bdfdbaf1e6f3_file.pdfIn PDF document text
    • https://invertebase.org/portal/checklists/checklist.php?clid=14275In PDF document text
    • https://www.abiabc.com/wp-content/uploads/2022/06/Download_Windows_Loader_V192_By_Daz_32_Bit_EXCLUSIVE.pdfIn PDF document text
    • https://juncty.com/wp-content/uploads/2022/06/osmble.pdfIn PDF document text
    • https://www.asv-ventabren.fr/wp-content/uploads/2022/06/janynic.pdfIn PDF document text
    • http://escortguate.com/wp-content/uploads/2022/06/emojava.pdfIn PDF document text
    • https://koenigthailand.com/wp-content/uploads/2022/06/Renault_CAN_Clip_173_x64_FINAL_Crack_setup_free.pdfIn PDF document text
    • https://macroalgae.org/portal/checklists/checklist.php?clid=15734In PDF document text
    • https://shrouded-badlands-89306.herokuapp.com/taltavi.pdfIn PDF document text
    • https://question2answers.com/wp-content/uploads/2022/06/Manvi_Ni_Bhavai_By_Pannalal_Patel_Pdf_43.pdfIn PDF document text
    • https://everyonezone.com/upload/files/2022/06/OeEoPSAQSjeIs6WHwqmz_11_1a5751fb88cbb1a647c0bdfdIn PDF document text
    • https://cromaz.com.br/upload/files/2022/06/jV4L6IBrZTQdkHWgrimB_11_1a5751fb88cbb1a647c0bdfdbafIn PDF document text
    • https://telebook.app/upload/files/2022/06/hG7m7N3PA7OAeFuCVoQn_11_1a5751fb88cbb1a647c0bdfdbafIn PDF document text
    • https://www.abiabc.com/wp-In PDF document text
    • https://koenigthailand.com/wp-In PDF document text
    • https://question2answers.com/wp-In PDF document text
    • http://evacdir.com/ncoa/absences.fairmont/obsidian/restrictedly/qmfnagrhzgkguwfpzgegugrmiezyzwugrg93bmxvywqqmf/retail.zg93bmxvywr8wuw0wkrgmwvyedhnvfkxtkrnnu16rtvnwhg4twpvnu1iedhlrtbwsuzkdmntundjbvz6y3lcyldfmu1vbejesuzzeulgqkvsbda.villainsIn PDF document text
    • https://voltigieren-bb.de/advert/microsoft-autoroute-2011-truck-crack-torrent-downloadIn PDF document text
    • https://koenigthailand.com/wp-content/uploads/2022/06/renault_can_clip_173_x64_final_crack_setup_free.pdfIn PDF document text
    • http://to-portal.com/upload/files/2022/06/2Rs8HikGYxNv7vhDEuaN_11_1a5751fb88cbb1a647c0bdfdbaf1e6f3_file.pdfIn PDF document text
    • http://www.tcpdf.orgIn PDF document text
    • http://to-portal.com/upload/files/2022/06/2Rs8HikGYxNv7vhDEuaN_11_1a5751fb88cbb1a647c0bdfdbaf1eIn 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_002_off00001263.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1263 120140 bytes
SHA-256: a217f12862e0ff75203bdd4136ca0d68471050be46bb09aed5306898926ffdd4
font_01_sfnt_off0000c046.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC046 76772 bytes
SHA-256: 07ce6fea3c98bf59133021be55ce9147f9c26365efe580a2a4f82130ca697f54