Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c04f1da49d7ea50…

MALICIOUS

PDF

48.4 KB Created: 2022-12-18 02:03:03 +00:00 Authoring application: kangjere (via mPDF 8.1.2) First seen: 2023-12-08
MD5: 89bc976b40e0ebaf0403b02a5cddd907 SHA-1: 95ebe71649ba2d2bafd8a2863b59992a58f3fbf2 SHA-256: 1c04f1da49d7ea50063943f98d73f9df7a3e861cd0f986a0267c68f4def8c410
174 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0009

Heuristics 6

  • 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://bestentrypoint.com/fluoro/ZG93bmxvYWR8QjFvTTNZd04zeDhNVFkzTVRJMk5qRTVOM3g4TWpVNU1IeDhLRTBwSUZkdmNtUndjbVZ6Y3lCYldFMU1VbEJESUZZeUlGQkVSbDA.aguilera?luminum&RG93bmxvYWQgSm9rZXIgU29uZ3MgRnJvbSBQYXBhLnBrRG9=derita.kibuye PDF link annotation
    • https://greenearthcannaceuticals.com/call-of-duty-2-multiplayer-cd-keygen-__exclusive__/In PDF document text
    • https://witfoodx.com/wp-content/uploads/2022/12/Archshaders_Vol_4_Torrent_Download_UPDATED.pdfIn PDF document text
    • https://shalamonduke.com/driver-genius-professional-v8-0-0-316-serial-key-2021-keygen/In PDF document text
    • https://valentinesdaygiftguide.net/2022/12/18/wonderware-intouch-10-1-free-download-crack-top/In PDF document text
    • https://dottoriitaliani.it/ultime-notizie/alimentazione/download-blackshades-5-3-full-extra-quality/In PDF document text
    • https://witfoodx.com/wp-content/uploads/2022/12/Archshaders_Vol_4_Torrent_Download_UPDATEDIn PDF document text
    • http://bestentrypoint.com/fluoro/zg93bmxvywr8qjfvttnzd04zedhnvfkztvrjmk5qrtvom3g4twpvnu1iedhlrtbwsuzkdmntundjbvz6y3lcyldfmu1vbejesuzzeulgqkvsbda.aguilera?luminum&rg93bmxvywqgsm9rzxigu29uz3mgrnjvbsbqyxbhlnbrrg9=derita.kibuyeIn PDF document text
    • http://dejavu.sourceforge.netIn extracted file (stream_003_off00001e07.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (stream_003_off00001e07.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00001e07.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1E07 19780 bytes
SHA-256: 4fa1e1f62893db1504b694ba157ca733dbc9a64fe6775bec7c5c9e8d41f3a745
stream_007_off0000812f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x812F 119072 bytes
SHA-256: df221e87b81d1531cafdadb6c09a602e9f604d1baf0a17bbd350cbb83baa06f7
font_01_sfnt_off000051ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51BA 19964 bytes
SHA-256: 5154a7c8cf7a9b55c2f939ad6a4a8f8327cd6552b9f68a87c49d10dfc747eaa8