Malicious PDF — malware analysis report

Static analysis result for SHA-256 d67943b2eaa6f485…

MALICIOUS

PDF

58.1 KB Created: 2021-09-25 12:48:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 66d5997c726c5b7030e54d22311b9fae SHA-1: 68b91eb61001c4d2a46fc5eb4853f9fc828807e9 SHA-256: d67943b2eaa6f48522c4179427776b414c925252f786f9214174e7a5d107468b
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded URLs pointing to external websites, characteristic of a link farm. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic and the ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the primary attack pattern involves luring users to malicious external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6270

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 https://oniceh.ru/uplcv?utm_term=g+chord+notes+guitar PDF link annotation
    • https://newegys.egyseg.eu/ckfinder/userfiles/files/goxabesido.pdfIn PDF document text
    • https://www.lowdoc-loans.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16149cbb6bd68d---90196780810.pdfIn PDF document text
    • https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/4e9ab726021f5fa0fa10922150e73f58/54543717515.pdfIn PDF document text
    • http://kursadowicz.pl/Upload/file/37912495384.pdfIn PDF document text
    • http://cleanking.net/userData/board/file/dawubigetixavavilivatuj.pdfIn PDF document text
    • http://sdds.be/userfiles/file/vanuzajenonelodofevoz.pdfIn PDF document text
    • http://elskup.pl/images/assets/file/pulak.pdfIn PDF document text
    • https://radio-aurea.eu/files/file/64035233176.pdfIn PDF document text
    • http://asbufestival.com/uploads/FCK_files/file/41773463333.pdfIn PDF document text
    • http://palmdale.thepokeluau.com/uploads/files/11992775221.pdfIn PDF document text
    • http://esrafisek.com/images_upload/files/58130140785.pdfIn PDF document text
    • http://mobiliteit.nu/files/zefonuronokezuludi.pdfIn PDF document text
    • http://majorpropertygroup.com/userfiles/files/gazifupowix.pdfIn PDF document text
    • http://japhina.com/upload/file/45688371846.pdfIn PDF document text
    • http://karikatura-kovarik.cz/files/file/92229844627.pdfIn PDF document text
    • https://pspgenuine.com/ci/userfiles/files/28487008397.pdfIn PDF document text
    • http://27derajat.com/assets/ckfinder/core/connector/php/uploads/files/4000408484.pdfIn PDF document text
    • https://tl-systems.hu/files/files/dilemelubivemuludesar.pdfIn PDF document text
    • http://rrarental.org/upload/file/91485853512.pdfIn PDF document text
    • http://rentaruedas.com/files/others/76778581678.pdfIn PDF document text
    • http://dentherapia.hu/files/file/gilizidamenalimamig.pdfIn PDF document text
    • http://aumnat2car.com/ckfinder/core/connector/php/upload/files/butem.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b052.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB052 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c869.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC869 10744 bytes
SHA-256: 99102739f76f16d63dd3f58b492d0e8d2a9c7a98760bb019bc10d7777dbccfe2

Open this report in the interactive analyzer, or submit your own file for analysis.