Malicious PDF — malware analysis report

Static analysis result for SHA-256 5601e22323b78f84…

MALICIOUS

PDF

92.4 KB Created: 2021-06-12 08:21:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 38bc70d049a8262f9402f9dda51f260d SHA-1: be14ffb770c829d059173d2f25748a383eddf8f3 SHA-256: 5601e22323b78f84c9a23d7b6bfda8c00efdd700aa17b76e6b37a87a28eaa117
156 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 functions as a link farm, with numerous URLs pointing to various domains, including compromised WordPress sites. The embedded URLs and the nature of the link farm suggest an attempt to redirect users to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://cructi.ru/uplcv?utm_term=raid+shadow+legends+umbral+enchantress+build PDF link annotation
    • https://nikosdimos.gr/userfiles/file/42046770548.pdfIn PDF document text
    • http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/13bb8d872c6174467501ee024ee1bcd3/76263655401.pdfIn PDF document text
    • http://work4shop.cz/userfiles/file/gefab.pdfIn PDF document text
    • http://3colorjazz.com/fckeditor/userfiles/image/18133904309.pdfIn PDF document text
    • http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160b83601d77d7---furimir.pdfIn PDF document text
    • https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160bcf18a2c99e---70623960040.pdfIn PDF document text
    • http://sunrui-ti.com/d/files/nujaxugi.pdfIn PDF document text
    • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608bc0d61611d---webukovitipaxozukuji.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b8fe6b1f67a---19054727269.pdfIn PDF document text
    • http://kondicionery-vidnoe.ru/upload_picture/file/derigezufufofunakumuwu.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac6ff6b2832---30489592898.pdfIn PDF document text
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160772a638b311---tufezajug.pdfIn PDF document text
    • https://mabuksusu.com/contents//files/gabafuradafolavexiwafol.pdfIn PDF document text
    • http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607112d03bb08---budamusuwolidirazavewuni.pdfIn PDF document text
    • https://theemperorsoldclothes.co.uk/wp-content/plugins/super-forms/uploads/php/files/8ugtv5t8vmsfrf6e8djol1b70k/63611161142.pdfIn PDF document text
    • https://angelsstaff.com/uploads/file/19788526159.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In 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_off0001265a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1265A 5592 bytes
SHA-256: 916d39bf2c8f4721e2beec5604db48593bedb021e9d44be5fdea0ddb16442f14
font_01_sfnt_off0001394c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1394C 12692 bytes
SHA-256: b9545dfa08095415d2aed5184d1ef9bb97477bdb9a3177cba68b1b7af68979b7

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