Malicious PDF — malware analysis report

Static analysis result for SHA-256 b34cb1aeb16bc483…

MALICIOUS

PDF

74.9 KB Created: 2021-06-12 11:13:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: e050854f36910a33675a9501d1ca6c95 SHA-1: aa7acaba886ccc41c7c664d19136557d9153a063 SHA-256: b34cb1aeb16bc483c502cfe90377076c63207fbc882fd1643cf8c2b759cc975d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many hosted on compromised CMS platforms, suggesting it is part of a link farm designed to redirect users to malicious content or phishing sites. The embedded URLs and the heuristic firings strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8879

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://coretry.ru/uplcv?utm_term=kgf+new+ringtones PDF link annotation
    • https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/0a08a0aae4f18f00ce56895e0fb9c570/26151414195.pdfIn PDF document text
    • http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b24a53215ef---kogukizisegotudifogajifer.pdfIn PDF document text
    • http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084cfa71ddff---zalinewivimemoporimuvuzix.pdfIn PDF document text
    • http://www.gainerwindows.ca/wp-content/plugins/super-forms/uploads/php/files/kfbrouki17r2ll6qlkvgqm28v0/33543881920.pdfIn PDF document text
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/6o1sogfau6kmfp1ofq7j70pbub/vosiweseg.pdfIn PDF document text
    • http://teaandtiarasottawa.com/clients/e/e8/e8f54e69a7463df9fd0adff13cd8e90f/File/mijowon.pdfIn PDF document text
    • https://cristalensi.com/public/File/fafunulike.pdfIn PDF document text
    • http://albino-pitti.com/pub_img/file/sitetopudorakesa.pdfIn PDF document text
    • http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/2a2f1f4df0477e05c3cb2e282dd2127b/zawiliva.pdfIn PDF document text
    • https://baohohoanglong.com/userfiles/file/67870931607.pdfIn PDF document text
    • https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160998ebce7062---tazat.pdfIn PDF document text
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160ac0c18ba691---71878197013.pdfIn PDF document text
    • https://amrapalispot.com/userfiles/file/77190661924.pdfIn PDF document text
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095b83751636---68921315864.pdfIn PDF document text
    • https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/28ca81bd0e6286a9eb69253c86297ba7/kitavowasiji.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c487de98f2---82346066226.pdfIn PDF document text
    • http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/4c938bfd1350cb3380bf5a12e112eba5/75054075003.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/9ee6b5e601cf043afc9c5104971083d6/1869168726.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC52 4540 bytes
SHA-256: 95251516ffe80fe7a859e666984351cfd232fad7d7ce3e38d94e54c4d8301a19
font_01_sfnt_off0000fbe8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBE8 12296 bytes
SHA-256: 67b662a32606d875074c3a86c30231badc6ae0cfbd8cc46d899e5e5aea3f0f7e

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