Malicious PDF — malware analysis report

Static analysis result for SHA-256 b323e73f9ee146ba…

MALICIOUS

PDF

111.9 KB Created: 2022-10-15 04:42:48 +00:00 Authoring application: rosamar (via PDF Master 1.0.1) First seen: 2024-01-03
MD5: ac7bb67c2073aa10f2b846357dd9897e SHA-1: a825a04545bb8547ec0a32dc6a2cad7f35dfd006 SHA-256: b323e73f9ee146ba44f636f831a1c1c40d2bd4b6b6389464296ac5b82ac2dadb
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://widesearchengine.com/assemblage.bedfordshire/dislodging/ZG93bmxvYWR8bXkxWldkeVpIeDhNVFkyTlRjek16ZzBNWHg4TWpVNU1IeDhLRTBwSUZkdmNtUndjbVZ6Y3lCYldFMU1VbEJESUZZeUlGQkVSbDA.Um9tZS5Ub3RhbC5XYXIuR29sZC5BbGV4YW5kZXIuUkVQQUNLLXZvbDEgR2FtZSBEb3dubG9hZAUm9/negative/carrick PDF link annotation
    • http://texocommunications.com/wp-content/uploads/2022/10/Hitman_2_REAL_PROPER_VERIFIED_Crack_ONLYFCKDRM_Fitgirl_Repack.pdfIn PDF document text
    • https://liquidonetransfer.com/wp-content/uploads/2022/10/iMyFone_DBack_7302_Crack_with_Registration_Code.pdfIn PDF document text
    • https://kopinganu.com/wp-content/uploads/2022/10/SlavomirNastasijevicKnjigedownload_PATCHEDPdf.pdfIn PDF document text
    • https://ready2reading.com/wp-content/uploads/2022/10/vijeo_designer_62_serial_number.pdfIn PDF document text
    • https://womss.com/little-nadia-model-ala-upd/In PDF document text
    • https://iippltd.com/wp-content/uploads/2022/10/crisfur.pdfIn PDF document text
    • http://pantogo.org/wp-content/uploads/2022/10/Lifting_Lug_Design_Spreadsheet.pdfIn PDF document text
    • http://verasproperties.com/?p=33277In PDF document text
    • https://trueinspirationalquotes.com/wp-content/uploads/2022/10/orasadz-1.pdfIn PDF document text
    • https://www.prarthana.net/pra/3dvia-composer-2012-download-full-torrent-best/In PDF document text
    • http://texocommunications.com/wp-In PDF document text
    • https://liquidonetransfer.com/wp-In PDF document text
    • https://kopinganu.com/wp-In PDF document text
    • http://widesearchengine.com/assemblage.bedfordshire/dislodging/zg93bmxvywr8bxkxwldkevpiedhnvfkytlrjek16zzbnwhg4twpvnu1iedhlrtbwsuzkdmntundjbvz6y3lcyldfmu1vbejesuzzeulgqkvsbda.um9tzs5ub3rhbc5xyxiur29szc5bbgv4yw5kzxiuukvqqunllxzvbdegr2ftzsbeb3dubg9hzaum9/negative/carrickIn PDF document text
    • http://texocommunications.com/wp-content/uploads/2022/10/hitman_2_real_proper_verified_crack_onlyfckdrm_fitgirl_repack.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
🗂 Part of campaign: secureserver.net 1471 samples

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001a3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A3A 84508 bytes
SHA-256: 2b7ba551bea82cc3307397981c1dbeb1b78486f95f2eb14e5e58d4e1b24edb0c
font_01_sfnt_off0000a226.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA226 83036 bytes
SHA-256: 6d13e73e85a502a13969f6a5eaecd0b275a0868c045f80b7d64ed55d70678261