Malicious PDF — malware analysis report

Static analysis result for SHA-256 88b3f6a047b834eb…

MALICIOUS

PDF

118.0 KB Created: 2022-09-10 19:13:13 +00:00 Authoring application: inocjahl (via PDF Master 1.0.1) First seen: 2026-04-02
MD5: 858edb66e6d6b00e72f35cad73f31855 SHA-1: fc517a9935d9ee1721b17ff70d7bada9ba9a2fa2 SHA-256: 88b3f6a047b834eb938055aa85da8fe781654a6a2cf1b00bac80fc4e46bf7f06
234 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0006

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://siteslocate.com/biodiese/ZG93bmxvYWR8WTdHYjJ4d1pIeDhNVFkyTWpZNE1ETTVNSHg4TWpVNU1IeDhLRTBwSUZkdmNtUndjbVZ6Y3lCYldFMU1VbEJESUZZeUlGQkVSbDA/RHIgRm9uZSBTd2l0Y2ggU2VyaWFsIEtleQRHI/boules/derain/faxed/individualists/fabulouscookies/handlers/ PDF link annotation
    • http://xn----btbbblceagw8cecbb8bl.xn--p1ai/minecraft-islands-of-eden-map-download-full-pc/In PDF document text
    • https://fam-dog.ch/advert/goforfiles-2013-gratuit-en-francais/In PDF document text
    • https://it-labx.ru/wp-content/uploads/2022/09/Life_is_Feudal_Forest_Village_v116719_skidrow_reloaded.pdfIn PDF document text
    • http://www.fithotech.com/wp-content/uploads/2022/09/Les_profs_torrent_cpasbien.pdfIn PDF document text
    • https://xn--kgv-reisewitzerhhe-s3b.de/wp-content/uploads/2022/09/noecorb.pdfIn PDF document text
    • https://www.voyavel.it/w10-digital-activation-program-v1-3-6-portable-ru-en-hot/In PDF document text
    • http://www.rathisteelindustries.com/mercadofinanceiroeduardofortunapdf/In PDF document text
    • http://pzn.by/?p=86100In PDF document text
    • https://loskutbox.ru/wp-content/uploads/2022/09/UploadsnackPasswordTxt14Kb_INSTALL.pdfIn PDF document text
    • https://myclassifiedpro.com/wp-content/uploads/2022/09/mud_and_blood_2_download_full_69.pdfIn PDF document text
    • http://www.studiofratini.com/revit-2016-x64-64bit-product-key-and-xforce-install-keygen/In PDF document text
    • https://belz-elektromagie.de/wp-content/uploads/2022/09/Gtaivcompressed1gb.pdfIn PDF document text
    • https://xtc-hair.com/dcs-black-shark-2-keygen-trivium-apollo-biblico-medic-best/In PDF document text
    • https://gracepluscoffee.com/zbrush-4r5-xforce-keygen-49-best/In PDF document text
    • https://www.skiplace.it/wp-content/uploads/2022/09/Descargar_Contaplus_2012_Con_49_magic_normale_naviga.pdfIn PDF document text
    • https://silkfromvietnam.com/wp-content/uploads/2022/09/Kunci_Jawaban_Akuntansi_Manajemen_Jilid_1_2_Garrison_Rapidsh.pdfIn PDF document text
    • https://womss.com/payday-2-god-mode-mod-repack/In PDF document text
    • https://9escorts.com/advert/vb-decompiler-pro-9-2-197/In PDF document text
    • https://libaco.nl/wp-content/uploads/2022/09/HD_Online_Player_Fan_movie_in_tamil_dubbed_download.pdfIn PDF document text
    • https://www.beaches-lakesides.com/realestate/homepage-builder-18-keygen-download-_best_/In PDF document text
    • https://it-labx.ru/wp-In PDF document text
    • https://myclassifiedpro.com/wp-In PDF document text
    • https://www.skiplace.it/wp-In PDF document text
    • https://silkfromvietnam.com/wp-content/uploads/2022/09/Kunci_Jawaban_Akuntansi_ManajemeIn PDF document text
    • https://libaco.nl/wp-In PDF document text
    • http://siteslocate.com/biodiese/zg93bmxvywr8wtdhyjj4d1piedhnvfkytwpzne1ettvnshg4twpvnu1iedhlrtbwsuzkdmntundjbvz6y3lcyldfmu1vbejesuzzeulgqkvsbda/rhigrm9uzsbtd2l0y2ggu2vyawfsietleqrhi/boules/derain/faxed/individualists/fabulouscookies/handlers/In PDF document text
    • http://www.fithotech.com/wp-content/uploads/2022/09/les_profs_torrent_cpasbien.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_off000024be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24BE 84508 bytes
SHA-256: 2b7ba551bea82cc3307397981c1dbeb1b78486f95f2eb14e5e58d4e1b24edb0c
font_01_sfnt_off0000acaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACAA 83036 bytes
SHA-256: 6d13e73e85a502a13969f6a5eaecd0b275a0868c045f80b7d64ed55d70678261