Malicious PDF — malware analysis report

Static analysis result for SHA-256 30e53f2bc8f2e8f2…

MALICIOUS

PDF

75.4 KB Created: 2021-09-03 02:48:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: fbfb4996bd1b723e41b79affbdc96370 SHA-1: 49876d6d5783e89b242e17798f8a140bdc69408c SHA-256: 30e53f2bc8f2e8f284a652059ad3fd5c7d62d9e4975ed691eade97ee83906f8b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to compromised websites, indicating a phishing or malware distribution attempt. The 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' heuristics strongly suggest this is a link farm designed to lure victims. While no scripts were explicitly extracted, the nature of the links and the ML classifier's high confidence score point towards malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://pixomot.ru/uplcv?utm_term=marlow+textbook+of+pediatric+nursing+pdf PDF link annotation
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609bef193ecae---sojanip.pdfIn PDF document text
    • https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/16080dded44970---30350232902.pdfIn PDF document text
    • http://manpukulivermore.com/uploads/files/41876739858.pdfIn PDF document text
    • http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/160fad54a1f3ac---gufosinobisupiti.pdfIn PDF document text
    • http://alpha-cp.com/userfiles/file/deziruzabilurovi.pdfIn PDF document text
    • http://musiconthebay.org/clients/2/26/269dd5bc96e197da989a8dccc71442af/File/mufififobajanej.pdfIn PDF document text
    • http://kondicionery-ivanteevka.ru/upload_picture/file/lavibobenufuzevebosexom.pdfIn PDF document text
    • http://www.caslyn.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609dd0bd203d8---59855989282.pdfIn PDF document text
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607784855cc39---xigiturorewinorenu.pdfIn PDF document text
    • https://equator-maritime.com/userfiles/file/25872449491.pdfIn PDF document text
    • https://ciiinnovationsummit.com/ci/userfiles/files/70535226695.pdfIn PDF document text
    • https://safe-international.com/userfiles/file/gokepenabikusagejil.pdfIn PDF document text
    • http://scamps.biz/userfiles/file/82532370132.pdfIn PDF document text
    • http://inarchengineering.it/userfiles/files/80122675895.pdfIn PDF document text
    • https://zapret-rf.org/web/img/podborky/files/teluxaxojidizumo.pdfIn PDF document text
    • http://inventory-acepipe.com/images/uploads/files/14622754991.pdfIn PDF document text
    • http://vinhthuan.com/upload/files/64406003980.pdfIn PDF document text
    • https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/8e30ce7551b54a119c5b006fd8538740/4530100760.pdfIn PDF document text
    • http://agrobud.net/uploaded/file/viwovetoz.pdfIn PDF document text
    • https://aluminiosarla.com/userfiles_arla/files/jegiputexotu.pdfIn PDF document text
    • https://transport-vehicules.fr/userfiles/file/41887397567.pdfIn PDF document text
    • http://kanchanaspa.com/ckfinder/userfiles/files/79307525727.pdfIn PDF document text
    • https://pezenasenchantee.fr/userfiles/file/15446710599.pdfIn PDF document text
    • https://dobre-akce.cz/media/files/file/difuzizamawolol.pdfIn 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c292.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC292 11308 bytes
SHA-256: e5730c3bc7d094f29216bc922a70515d503950a90bdf1c38f061a75d7592a3be
font_01_sfnt_off0000dcf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCF8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f50a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF50A 16536 bytes
SHA-256: d58987423c7c6a7766ea73e899f5005c517e6ed7240e6b3c5d5df85956915eb9

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