Malicious PDF — malware analysis report

Static analysis result for SHA-256 25c93ec8ce03679a…

MALICIOUS

PDF

123.8 KB Created: 2022-06-13 06:17:37 +02:00 Authoring application: feeddek (via PDF Master 1.0.1) First seen: 2026-04-02
MD5: dafa95b4725cfb95fb5f2e121b9b7cda SHA-1: 8dd740b01ab4c3ff04ae26d8ea9d1f91d46e70e9 SHA-256: 25c93ec8ce03679af1475b91f6d408b8a8eff2a7d30d84f4f61b5fe3e3f94385
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.
  • 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.
  • 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/biowaste/U3dpdGNoZ2VhciBBbmQgUHJvdGVjdGlvbiBCeSBCYWRyaSBSYW0gRWJvb2sgMTUU3d/busty/dwelt.flamandes/pantothenate/naylor/plenary/ZG93bmxvYWR8UzdQTVRKMmVUZDhmREUyTlRRNU9Ea3hOako4ZkRJMU9UQjhmQ2hOS1NCWGIzSmtjSEpsYzNNZ1cxaE5URkpRUXlCV01pQlFSRVpk/ PDF link annotation
    • http://www.ndvadvisers.com/madrix-3-3a-cracked-rar-78l-upd/In PDF document text
    • https://scholarshipsgist.com/wp-content/uploads/2022/06/quilfred.pdfIn PDF document text
    • https://crystalshine.eu/wp-content/uploads/2022/06/Race_2_Telugu_Movie_Subtitle_Free_Download.pdfIn PDF document text
    • https://firstamendment.tv/upload/files/2022/06/6AxlxViPVQU8AsW9oH1h_13_c6a230f789734e54eb72d2b813444a7e_file.pdfIn PDF document text
    • https://thebrothers.cl/red-alert-2-yuri-revenge-free-download-full-version-for-pc-verified/In PDF document text
    • http://geniyarts.de/wp-content/uploads/2022/06/Free_Hindi_Comics_Velamma_All_Pdf_UPD.pdfIn PDF document text
    • https://l1.intimlobnja.ru/vastuguna-deepika-pdf-best-download/In PDF document text
    • https://www.2tmstudios.com/rockusb-driver-v20-windows-7/In PDF document text
    • http://referendum.pl/2022/06/13/prakashak-fonts-convert-nudi-__exclusive__/In PDF document text
    • https://ryhinmobiliaria.co/wp-content/uploads/2022/06/Epsonpx650adjustmentprogram.pdfIn PDF document text
    • http://www.easytable.online/wp-content/uploads/2022/06/Computer_Programming_By_Tamim_Shahriar_Subeen_Pdf_15_LINK.pdfIn PDF document text
    • https://www.indoshoot.com/wp-content/uploads/2022/06/malgeo.pdfIn PDF document text
    • https://www.promorapid.com/upload/files/2022/06/8RaNsermy5d5vPEhrnMX_13_03da8586c0357f8e3b85a248da04e70b_file.pdfIn PDF document text
    • https://www.vakantiehuiswinkel.nl/carti-erotice-pdf-extra-quality/In PDF document text
    • https://smartbizad.com/advert/piratesofthecaribbeangamecrackdownload/In PDF document text
    • https://bizzclassified.us/advert/best-seo-company-in-noida-seo-services-agency-in-noida/In PDF document text
    • https://datingmarriagehub.com/wp-content/uploads/2022/06/adobe_after_effects_cs6_plugins_megapack.pdfIn PDF document text
    • http://www.jbdsnet.com/opencart-xml-import-pro-nulled-87/In PDF document text
    • https://ablazestore.com/wp-content/uploads/2022/06/nanccri.pdfIn PDF document text
    • http://findmallorca.com/the-bird-and-the-bee-discography-rar/In PDF document text
    • http://evacdir.com/biowaste/u3dpdgnoz2vhcibbbmqguhjvdgvjdglvbibcesbcywryasbsyw0grwjvb2sgmtuu3d/busty/dwelt.flamandes/pantothenate/naylor/plenary/zg93bmxvywr8uzdqtvrkmmvuzdhmreuytlrrnu9ea3hoako4zkrjmu9uqjhmq2hos1ncwgizsmtjsepsyznnz1cxae5urkpruxlcv01pqlfsrvpk/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_002_off00000e6d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xE6D 120140 bytes
SHA-256: a217f12862e0ff75203bdd4136ca0d68471050be46bb09aed5306898926ffdd4
font_01_sfnt_off0000bc50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC50 76772 bytes
SHA-256: 07ce6fea3c98bf59133021be55ce9147f9c26365efe580a2a4f82130ca697f54