Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcc785a7a7111ce1…

MALICIOUS

PDF

74.5 KB Created: 2021-09-20 18:23:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 7c60041218f55883fc3722e6052b3a9a SHA-1: 349b6cd2edb4ded105b2859fce5de8bfd2033552 SHA-256: fcc785a7a7111ce171eba1cd33f9a01d720913c2868a4ae1fb4e36e684c14345
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains a large number of external URIs and is described as a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The embedded JavaScript stream further supports malicious intent, likely for obfuscation or redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 7

  • 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.
  • 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 https://wastran.ru/uplcv?utm_term=download+video+grabber+for+android PDF link annotation
    • http://tfforming.ru/d/files/27644754293.pdfIn PDF document text
    • https://shen-su.eu/gfx/userfiles/files/xonadigomazewo.pdfIn PDF document text
    • https://lacausedeslivres.com/userfiles/file/jebunimenolopopawesuv.pdfIn PDF document text
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613e1cb549af6---jutofudirunugi.pdfIn PDF document text
    • https://fishboat.hr/files/51522854157.pdfIn PDF document text
    • http://bandenplaats.nl/cmsimages/file/lijobilisibasulegig.pdfIn PDF document text
    • http://ylphs.com/ckfinder/userfiles/files/32677712874.pdfIn PDF document text
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/j8mls9jct3nksdp6fgqn5pfv32/87898088339.pdfIn PDF document text
    • http://decamiones.com/userfiles/file/jomiwoselenud.pdfIn PDF document text
    • https://luxesystem.site/js/ckfinder/userfiles/files/jobemenugaxabaxepal.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/26053gombin98i8pt9lubqbas3/36437379344.pdfIn PDF document text
    • https://trainova.com/userfiles/file/82524559211.pdfIn PDF document text
    • http://termosystem.pl/userfiles/file/tarenutap.pdfIn PDF document text
    • http://plovdivweek.com/app/templates/js/ckfinder/userfiles/files/31933519656.pdfIn PDF document text
    • http://terezmisszio.eu/files/file/sazawidijokojakot.pdfIn PDF document text
    • http://gayaarchi.com/userfiles/file/20210917141938.pdfIn PDF document text
    • http://jatyn.cn/upfiles/202109/file/1632013168.pdfIn PDF document text
    • https://partroyfuneralhome.com/partroy/assets/file/78777630604.pdfIn PDF document text
    • http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/bfc3hvl0ksfaq6oka6inuh3jh6/ranujipetadixasab.pdfIn PDF document text
    • http://mdcegy.com/app/webroot/img/fck/file/54784860575.pdfIn PDF document text
    • http://mylodge-naoshima.com/images/blog/file/gevonejokavariv.pdfIn PDF document text
    • http://ressourcengarten.de/azubi/userfiles/files/52357276219.pdfIn PDF document text
    • http://vatlieubaooncachnhiet.com/userfiles/file/55270914743.pdfIn PDF document text
    • http://ipmarketing.net/FCKeditor/editor/filemanager/connectors/userfiles/file/gipabatovof.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_off0000c232.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC232 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000da49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA49 10556 bytes
SHA-256: 70fd17d24bd23d562fd6f110ca109361013c2fdd5b8f070521b01b2ab7b69520
font_02_sfnt_off0000f23c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF23C 16212 bytes
SHA-256: d595c99b64cd76b5ba223cac199c83ae4616d8a4fbdda2a073e6c74796873273

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