Malicious PDF — malware analysis report

Static analysis result for SHA-256 294c0d08c89a19fa…

MALICIOUS

PDF

162.4 KB Created: 2021-07-22 19:52:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 70e0d28f33eeb0860e899c47fb05fbb0 SHA-1: c1a356bbfb586ebb457e35bd90c304d2168897c4 SHA-256: 294c0d08c89a19faac08f2c576667652413811a38648eb79033cae30a50e6118
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised CMS uploads and disposable hosting, indicating a link farm designed for phishing or malware distribution. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to lure users to malicious sites, often initiated via spearphishing attachments.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

Heuristics 6

  • 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.
  • 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://xn--clinicaquirogavilario-vbc.com/wp-content/plugins/super-forms/uploads/php/files/m7hgr8s9l466cbge3flj73i840/narafawetofotozatefigalij.pdf In PDF document text
    • http://www.insight-assessment.com/ckfinder/userfiles/files/munovokeposabududutirizud.pdfIn PDF document text
    • http://linza-market.ru/upload/files/dumoxig.pdfIn PDF document text
    • https://autotronics.vn/userfiles/file/vosupanunimisabamixoku.pdfIn PDF document text
    • https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160964d1d55dc2---79986054454.pdfIn PDF document text
    • http://islandpointfl.com/userimages/dalofekutujirojuguvosuxum.pdfIn PDF document text
    • https://cdpu.net/wp-content/plugins/super-forms/uploads/php/files/7cd8407d17d17523a21beba4e0a7aef6/61624039632.pdfIn PDF document text
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/160a8c0f61c4f9---kanuzexurekezitazuz.pdfIn PDF document text
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160b5f972a511c---11025121151.pdfIn PDF document text
    • http://styropapex.pl/userfiles/file/14221596155.pdfIn PDF document text
    • https://whiteplacard.com/UserFiles/file/82326616254.pdfIn PDF document text
    • http://nfraccon.org/userfiles/file/rojewalatufobimoforadaget.pdfIn PDF document text
    • http://boschvietnam.com/files/usersfiles/files/sezepigab.pdfIn PDF document text
    • http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160748ff4a4dcb---nujuvanad.pdfIn PDF document text
    • http://bonsaichik.ru/images_uploads/files/98167726581.pdfIn PDF document text
    • https://planet-for-events.de/userfiles/file/pezalazerelozonupibejaxav.pdfIn PDF document text
    • http://siamsnail.com/media/userfiles/files/silowi.pdfIn PDF document text
    • https://organicfertilizerproduction.com/d/files/jirateladefawozuxere.pdfIn PDF document text
    • http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/160dfc2b84426e---57898775977.pdfIn PDF document text
    • http://jameshamiltondds.com/clients/6/6c/6cc67b5d90347a591bf4e9c0b97a5143/File/boredaxoferaf.pdfIn PDF document text
    • http://techbis.pl/files/file/63457867669.pdfIn PDF document text
    • https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/43cc9fe0ca594ca1a9eccacbdc410a6c/99992464795.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=the+definition+of+epilepsyPDF 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_off0002171a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2171A 21100 bytes
SHA-256: 396a8c940866f8c1f61a8c4b515f2c0841147ec9888fea40e99fa0adb1376881
font_01_sfnt_off00024c81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24C81 10408 bytes
SHA-256: e008926ba34ab0672067bf4cab12d81b139d573eff6e5073c77c00ce9f20b6a2
font_02_sfnt_off00026404.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26404 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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