Malicious PDF — malware analysis report

Static analysis result for SHA-256 43b90b007161e216…

MALICIOUS

PDF

87.4 KB Created: 2021-06-13 16:48:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 8e1062fc61d602b763faba1e9b521b87 SHA-1: 705321aa202bea8ddcc6856b53c7436cfe15443f SHA-256: 43b90b007161e2162c0958d01974c406c5e22b16caac1ba3ddfd2a165f6e6248
154 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which are hosted on compromised CMS platforms, suggesting a phishing or malware distribution attempt. The heuristic firings indicate a link farm on disposable hosting and a high ML score, further supporting malicious intent. Although no scripts were explicitly extracted, the nature of the links and the detection by ClamAV as a phishing trojan point to a malicious document designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8245

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://drafthe.ru/uplcv?utm_term=saving+private+ryan+full+movie+free PDF link annotation
    • https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/67ghofc7oqn7ptg4duuot3sih3/46166587688.pdfIn PDF document text
    • https://bawwabatrizq.com/userfiles/file/56538311647.pdfIn PDF document text
    • https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d273266fd0---kaduwitukelumubitizurik.pdfIn PDF document text
    • https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/7726d0ad45fa9e444a3970c79f2b9797/19356251201.pdfIn PDF document text
    • https://razvozka24.ru/wp-content/plugins/super-forms/uploads/php/files/21bc6eb71839898a392e271620984182/davofufuvajenugaraxavi.pdfIn PDF document text
    • http://cetinelektrik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160928b7a6efe0---remosaxuvotekusetomurusa.pdfIn PDF document text
    • https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/efa3e18dcee8b6083c7c2370b5047766/lovafafoluvifojorimejag.pdfIn PDF document text
    • https://realestateconnect.biz/wp-content/plugins/super-forms/uploads/php/files/n0bo6f8dckc6e2jp1ccvva6r53/dukuvetopojimoredibom.pdfIn PDF document text
    • https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5c326911fd---90291423493.pdfIn PDF document text
    • http://jjmcp.jp/userfiles/Image/file/tozomigasexowidatip.pdfIn PDF document text
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a6d53bf3032---48158911497.pdfIn PDF document text
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160afd0ca0ee2b---48948712125.pdfIn PDF document text
    • http://aps-mes.com/files/file/77772482428.pdfIn PDF document text
    • https://binarbaidrealestate.com/public_html/userfiles/file/44878807521.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/c1c2209d67ec56ebb19fcf1f4cdeb1b2/miburetogafi.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_off0001367d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1367D 5308 bytes
SHA-256: a45f76182fb48dd401e28f56221f39213405bbbf1a09ac1568c38c3cc1ff8737

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