Malicious PDF — malware analysis report

Static analysis result for SHA-256 bee7f719d7ab7d64…

MALICIOUS

PDF

66.6 KB Created: 2021-06-16 07:46:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 6e0623631c30396f1d394f0d6ed5043e SHA-1: 34743a1b5d4dc394c902a6c3f40602b2d1ee6a80 SHA-256: bee7f719d7ab7d64458341f8211e8344b4bc65e232083114ac287d15f30bb4f4
154 Risk Score

Malware Insights

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

The PDF contains multiple links to external websites, many of which appear to be compromised WordPress installations used for hosting malicious files. The 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION' heuristics strongly indicate malicious intent, specifically identified as a phishing trojan. The embedded document body, though heavily obfuscated, contains text related to movie downloads, suggesting a lure to entice users to click on the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8278

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://wastran.ru/uplcv?utm_term=alaipayuthey+movie+download+720p PDF link annotation
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/628233c9f8dd698ce6ee1698f498827e/bajamoxujofovozadizexe.pdfIn PDF document text
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609dbae1d2a53---82916856343.pdfIn PDF document text
    • http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074fa4ac485d---66227688968.pdfIn PDF document text
    • http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607540f2076c8---mimaluju.pdfIn PDF document text
    • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b640f095938---sukepudokez.pdfIn PDF document text
    • http://toyotarent.kr/FileData/ckfinder/files/20210607_498940C9FBAD9333.pdfIn PDF document text
    • http://niszczeniewaw.pl/userfiles/file/dujaj.pdfIn PDF document text
    • http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16077506a99a6e---29882179830.pdfIn PDF document text
    • http://africanhairbraidingsalon.com/userfiles/file/vaximej.pdfIn PDF document text
    • https://www.hinogas.com/wp-content/plugins/super-forms/uploads/php/files/rktlrt6fogu3c0tg2j0emi6jcf/49711690857.pdfIn PDF document text
    • https://protradingindia.net/userfiles/file/30388399664.pdfIn PDF document text
    • https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/c99e76f4c96d0edb2d2147077c6bbffc/jorabaj.pdfIn PDF document text
    • https://raiporjai.com/piceditor/file/42811074219.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ecae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECAE 5524 bytes
SHA-256: 88a4e1c4d5533aaacf03ad46bcaee24adaac471b7ce150b21bd8d781efa34808

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