Malicious PDF — malware analysis report

Static analysis result for SHA-256 14f0ad47b1be9717…

MALICIOUS

PDF

89.1 KB Created: 2021-09-07 05:29:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 9309f6297feae10c7f82abc6c443d12c SHA-1: 923341720cabf5b75b79f204368dc8a52a7b198f SHA-256: 14f0ad47b1be971773bcf03584764194e961bec2442cde342bc70852981f06e2
176 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 external URIs, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics strongly suggest this PDF acts as a lure, likely for phishing or to download further malware, aligning with spearphishing attachment tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://oniceh.ru/uplcv?utm_term=common+building+components+pdf PDF link annotation
    • http://tykhestudiodesigns.com/clients/7/73/7311521ca682816632878891c231d107/File/30938627973.pdfIn PDF document text
    • http://nuyewpilot.academy/wp-content/plugins/super-forms/uploads/php/files/770529d0c313cdfdd17669dfe348c339/juzifipawemibuf.pdfIn PDF document text
    • https://spazmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbf8bd7fc9---kopok.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c929f3a2bfa---53302884969.pdfPDF link annotation
    • https://viboot.com/ckfinder/userfiles/files/79397770530.pdfIn PDF document text
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dfecb58ca79---jenunopibamaboboperumok.pdfIn PDF document text
    • http://mkngsp.ru/upload/files/milidogumaviruv.pdfIn PDF document text
    • https://wecareprogram.org/images/file/sovunupopunirerefijiwiwuv.pdfIn PDF document text
    • http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/4f0b7fa72e242fc725416f8c08572a8c/sixepilezulalugupixuvag.pdfIn PDF document text
    • http://precedent.by/_newsite/images_from_html_editor/file/panotarorovimofo.pdfIn PDF document text
    • http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/16072a67493d22---49095517275.pdfIn PDF document text
    • http://stonestudio.pl/files/upload/file/xakisipu.pdfIn PDF document text
    • https://cvenhancer.com/wp-content/plugins/super-forms/uploads/php/files/56315e7a26aa87634f86a04686127e78/95029201156.pdfIn PDF document text
    • https://www.bevillelecomte.com/ckfinder/userfiles/files/34521370705.pdfIn PDF document text
    • http://dgjinhak.kr/DATA/upload/files/202106111227011907.pdfIn PDF document text
    • http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16087cad1c4a83---29407671322.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/sj0nvghl0got2e1rc6fv1ptjc6/50383177101.pdfIn PDF document text
    • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/160fd3bc39ea58---towekisinas.pdfIn PDF document text
    • https://samiznojmo.cz/wp-content/plugins/super-forms/uploads/php/files/67820a2df21fa31461c743442d42bde4/dufivuzadu.pdfIn PDF document text
    • http://studioguidobarbieri.it/userfiles/files/84645681964.pdfIn PDF document text
    • http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acf7755aabc---tigadatifedelufubaxud.pdfIn PDF document text
    • https://www.elektrobetrieb-scholz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160832affd4d10---rugojalogewuwaw.pdfIn PDF document text
    • https://teenvolunteerdallas.org/wp-content/plugins/super-forms/uploads/php/files/66abb6eb125ece779af2489388ddfde6/20725850903.pdfIn PDF document text
    • http://guojingmall.com/userfiles/file///xebesigedof.pdfIn PDF document text
    • https://delphin-restaurant.com/ckfinder/upload/files/xegitedupuburujumo.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_off0000f79e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF79E 10972 bytes
SHA-256: 51bebe957db0aee7f9e596edb779aa2d13be722de98da0d3d55e4e74a17fd05a
font_01_sfnt_off00011099.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11099 17440 bytes
SHA-256: 3491c6d03b367dfba3123129220cb936815bdd133e663f5c34df8cc0a7adbf78
font_02_sfnt_off00013e28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E28 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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