Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8c38238b0c08d8a…

MALICIOUS

PDF

142.4 KB Created: 2022-06-08 03:49:30 +02:00 Authoring application: trisdart (via PDF Master 1.0.1) First seen: 2022-07-15
MD5: 4647ffcb924e022dd75c9058bc2a4b00 SHA-1: 3bba27cdd2c24ac99ad14ca4b0b72c0c298940bd SHA-256: b8c38238b0c08d8a06f7207e06b87ea7c50cd07f49ef086ead750df8027a320a
104 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.002 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are associated with cracked software. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of these links, suggesting a coordinated effort to distribute malicious content. The primary IOC is the URL http://evacdir.com/Q2VyYmVydXMgWAQ2V.nibbling/quotient.ZG93bmxvYWR8NlJRTmpWdGQzeDhNVFkxTkRZME16TTFNSHg4TWpVM05IeDhLRTBwSUhKbFlXUXRZbXh2WnlCYlJtRnpkQ0JIUlU1ZA&hampshire=joni, which is likely the initial download point for a payload.

Machine Learning

  • Nyx PDF Classifier clean score 0.0055

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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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/Q2VyYmVydXMgWAQ2V.nibbling/quotient.ZG93bmxvYWR8NlJRTmpWdGQzeDhNVFkxTkRZME16TTFNSHg4TWpVM05IeDhLRTBwSUhKbFlXUXRZbXh2WnlCYlJtRnpkQ0JIUlU1ZA&hampshire=joni
    • https://karahvi.fi/wp-content/uploads/2022/06/Open_Dicom_Viewer__Crack_.pdf
    • https://lalinea100x100.com/2022/06/08/ultravpn-crack-free-latest/
    • https://lll.dlxyjf.com/upload/files/2022/06/Gfgpg62c3ghkpJrsnQIa_08_5c89741404f3dcb9a3b34836f2926e15_file.pdf
    • http://mytown247.com/?p=42151
    • https://mandarininfo.com/file-splitter-crack-final-2022/
    • http://ideaboz.com/?p=7354
    • https://omidsoltani.ir/wp-content/uploads/2022/06/Puzzle_Pieces_Icons__Crack__.pdf
    • https://fortworth-dental.com/wp-content/uploads/2022/06/Auto_Logon_Tool.pdf
    • https://concretolt.ro/advert/faraway-planet-3d-screensaver-crack-activation-key-download/
    • https://copainca.com/?p=82669
    • https://www.luckyanimals.it/correct-o-chem-2-10-with-key-x64-2022-new/
    • http://www.5280homes.com/?p=51985
    • https://richonline.club/upload/files/2022/06/rJ3ztIPdYgzmW8jCxSfM_08_5c89741404f3dcb9a3b34836f2926e15_file.pdf
    • https://freebetc.com/wp-content/uploads/zyvpaky.pdf
    • https://hanffreunde-braunschweig.de/wp-content/uploads/2022/06/Phythagoras_Calculator__Crack_Download_Latest2022.pdf
    • http://goldeneagleauction.com/?p=27838
    • https://moronencaja.com/wp-content/uploads/2022/06/qmol.pdf
    • https://cancuntoursbook.com/wp-content/uploads/2022/06/jamemari.pdf
    • https://wakelet.com/wake/wNAEYCozLSxvpMFAktftE
    • https://tenutpecildefivefi.wixsite.com/neulopakpitch/post/cmdedit-crack-free-download-32-64bit-latest-2022
    • http://www.tcpdf.org
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://www.aiim.org/pdfa/ns/extension/
    • http://www.aiim.org/pdfa/ns/schema#
    • http://www.aiim.org/pdfa/ns/property#
    • http://www.aiim.org/pdfa/ns/id/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_015_off00005b3b.bin
a217f12862e0ff75203bdd4136ca0d68471050be46bb09aed5306898926ffdd4
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5B3B 120140 bytes