Malicious PDF — malware analysis report

Static analysis result for SHA-256 02036369796743d7…

MALICIOUS

PDF

81.4 KB Created: 2021-09-10 10:33:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: c204978e8266a6e4063eceed9cbfc1b5 SHA-1: 74f1788119908d035336aebfcfa0261ae58df3fe SHA-256: 02036369796743d7e080354e72d479e2623444be02989165765e50c9014dc778
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which point to disposable hosting or compromised WordPress sites, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. The embedded JavaScript is a common method for initiating malicious actions within PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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 http://dspec-car.com/js/upload/files/65288826750.pdf In PDF document text
    • http://zabbeleecooking.com/ckfinder/userfiles/files/72627550704.pdfIn PDF document text
    • http://drxzhang.com/userfiles/file/molinigatopi.pdfIn PDF document text
    • http://naturenhuman.com/app/webroot/userfiles/file/wexilovowuxizevos.pdfIn PDF document text
    • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/rauj1flb6m7a6jolrooa59t3ik/gowimofaxokiwesajezev.pdfIn PDF document text
    • http://tabletopad.com/images/file/kisikezarifivibugafas.pdfIn PDF document text
    • http://kaupa.cz/userfiles/file/kifujupokemagow.pdfIn PDF document text
    • http://j-club.eu/userfiles/file/92161643603.pdfIn PDF document text
    • https://www.techsrollout.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ae6802f0f3---6065315112.pdfIn PDF document text
    • https://norservis.cz/files/files/tilegudevezagovuwegisev.pdfIn PDF document text
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/161395ad62ea29---favizufeguloze.pdfIn PDF document text
    • https://xn--80aaijz0c.xn--p1ai/ckfinder/userfiles/files/mebopefigigoviwoxog.pdfIn PDF document text
    • http://artin-intranet.com/ckupload/files/zurunigive.pdfIn PDF document text
    • https://ppkh.net/userfiles/file/jodinimetopakob.pdfIn PDF document text
    • http://twilaw.com/files/files/94002811032.pdfIn PDF document text
    • http://studioriboldi.eu/userfiles/files/43519700119.pdfIn PDF document text
    • http://aksaxena.com/bpms/includes/fckeditor_uploads/userfiles/file/debamir.pdfIn PDF document text
    • http://cambridgekapurthala.com/damana/userfiles/file/sadapij.pdfIn PDF document text
    • https://pasationtravellers.com/root/FCKeditor/file/zutamotukenebu.pdfIn PDF document text
    • http://kingsap.com/file_media/file_image/file/palamitiposagupovege.pdfIn PDF document text
    • http://vuason.vn/upload/files/lagojud.pdfIn PDF document text
    • http://rivebistro.net/ckfinder/userfiles/files/33511333198.pdfIn PDF document text
    • https://gppacdatabase.net/userfiles/file/todimirovubakolilutem.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=moviebox+pro+download+moviesPDF link annotation
    • 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_off0000da51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA51 10844 bytes
SHA-256: c1b81251c9c45fb4b1694b963602488abcb2f2a85b9cc21c989733d93061778d
font_01_sfnt_off0000f327.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF327 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010b39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B39 17608 bytes
SHA-256: 1790e0694cd2fd54948db8698438e4fe2c58fd85257dfe259f0547e8bb9a03ca

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