Malicious PDF — malware analysis report

Static analysis result for SHA-256 875cfc75da5c7c36…

MALICIOUS

PDF

126.0 KB Created: 2022-06-11 00:59:20 +02:00 Authoring application: gemsaaj (via PDF Master 1.0.1) First seen: 2026-05-04
MD5: 9a97d249d9a6dffef4dbc8fed3f091bf SHA-1: db85e33322dbb324430897aa1308dc22044b2043 SHA-256: 875cfc75da5c7c36865c4e7036f3b5274f1dce8ff1e3ad310921e02a78d99ac4
104 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0019

Heuristics 4

  • 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.
  • 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://evacdir.com/?gellert.connecters/livermore/tite/ZG93bmxvYWR8bVQ4TWpGNGJYeDhNVFkxTkRnNU16RTVNWHg4TWpVNU1IeDhLRTBwSUZkdmNtUndjbVZ6Y3lCYldFMU1VbEJESUZZeUlGQkVSbDA/RGlnaXRhbCBBbmFyY2h5IEJhY2tkcm9wIERlc2lnbmVyIDE1IENyYWNrZWQRGl/ PDF link annotation
    • https://automative.club/upload/files/2022/06/dcN3llXMUtR3LrSywlup_10_6fc0ecbfeb371725b2f064c225a2b079_file.pdfIn PDF document text
    • http://chat.xumk.cn/upload/files/2022/06/kRXjOnIyJ5Xl1PQMFepx_10_6fc0ecbfeb371725b2f064c225a2b079_file.pdfIn PDF document text
    • http://assetmanagementclub.com/?p=2826In PDF document text
    • https://shahjalalproperty.com/wp-content/uploads/2022/06/rafmar.pdfIn PDF document text
    • https://72bid.com?password-protected=loginIn PDF document text
    • https://postlistinn.is/foxconn-n15235-motherboard-manual-pdfIn PDF document text
    • https://rsmerchantservices.com/wp-content/uploads/2022/06/Aliceinwonderlandhindidubbedfullmovie3.pdfIn PDF document text
    • https://kidswheelsllc.com/wp-content/uploads/2022/06/Kurukshetra_Full_Movie_NEW_Download_Tamil_Movie.pdfIn PDF document text
    • https://waoop.com/upload/files/2022/06/yDe9PF5yWtWndzgXlXTc_10_a6c39d634e7e3ff2cba50b92178dc3f4_file.pdfIn PDF document text
    • http://feline-nord-picardie.fr/advert/in-naturalibus/In PDF document text
    • http://applebe.ru/2022/06/11/rob-base-the-incredible-base-1989-flac-kitlope/In PDF document text
    • https://mondetectiveimmobilier.com/wp-content/uploads/2022/06/shaferr.pdfIn PDF document text
    • https://buymecoffee.co/wp-content/uploads/2022/06/roseelle.pdfIn PDF document text
    • https://alumbramkt.com/wp-content/uploads/2022/06/Cities_Skylines_Modern_City_Center_Update_V1_12_3f2CODEX.pdfIn PDF document text
    • http://ilpn.ca/?p=7268In PDF document text
    • https://boardingmed.com/wp-content/uploads/2022/06/tomjala.pdfIn PDF document text
    • https://melaniegraceglobal.com/wp-content/uploads/2022/06/Sims2IkeaAccesoriosParaElHogarPackdeaccesoriosFullIthegame.pdfIn PDF document text
    • https://kiubou.com/upload/files/2022/06/PefAA5OCpxg7DjgTbaPb_10_a6c39d634e7e3ff2cba50b92178dc3f4_file.pdfIn PDF document text
    • https://jobavenue.net/?p=10019In PDF document text
    • https://social.mactan.com.br/upload/files/2022/06/QahOsdZ59PoQCy3Ygy5R_10_6fc0ecbfeb371725b2f064c225a2b079_file.pdfIn PDF document text
    • https://melaniegraceglobal.com/wp-In PDF document text
    • https://social.mactan.com.br/upload/files/2022/06/QahOsdZ59PoQCy3Ygy5R_10_6fc0ecbfeb371725b2f064c225a2b079_fileIn 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
🗂 Part of campaign: secureserver.net 1471 samples

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Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000136c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x136C 120140 bytes
SHA-256: a217f12862e0ff75203bdd4136ca0d68471050be46bb09aed5306898926ffdd4
font_01_sfnt_off0000c14f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC14F 76772 bytes
SHA-256: 07ce6fea3c98bf59133021be55ce9147f9c26365efe580a2a4f82130ca697f54

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