Malicious PDF — malware analysis report

Static analysis result for SHA-256 942ccff6bddf0a58…

MALICIOUS

PDF

77.3 KB Created: 2021-10-10 21:29:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 2fad7ecd10b4228bb86975628f32531c SHA-1: 2748a3b9ca19d5bc8e3723aaaf1e7e4daaf010b8 SHA-256: 942ccff6bddf0a58834839e5f0e868f85e3e56a904d2851e83e4d63db50c884e
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. The document contains numerous external links, many pointing to compromised websites or disposable hosting, suggesting a phishing or malware distribution attempt. The presence of a visual download button further supports a lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9840

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=play+newlywed+game+online PDF link annotation
    • http://artvideo74.ru/upfiles/files/gawuwemuzelovadenakexuse.pdfIn PDF document text
    • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/161632aaeb360e---36666166875.pdfIn PDF document text
    • http://webinaris.training/ckfinder/userfiles/publics/files/kinovamej.pdfIn PDF document text
    • http://nsdadventist.org/FCKData/file/66758740332.pdfIn PDF document text
    • https://sunsetlearningcenter.com/userfiles/file/8139257589.pdfIn PDF document text
    • http://thanglong.vn-greenenergy.com/ckfinder/userfiles/files/42598758781.pdfIn PDF document text
    • http://italy-ex.com/images/blog/file/tuvuruvubogosuxe.pdfIn PDF document text
    • http://elitsatodorova.com/uploadfiles/file/figixaseto.pdfIn PDF document text
    • http://inventory-acepipe.com/images/uploads/files/wawomizeniraratukedef.pdfIn PDF document text
    • https://khotelmarket.com/FileData/ckfinder/files/20210919_D3F3C12ADFBB2C95.pdfIn PDF document text
    • http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/161446b440b89b---mutasimimeluto.pdfIn PDF document text
    • http://ktai.lmg.jp/upload/file/8441053890.pdfIn PDF document text
    • http://abwmarlboropike.com/uploads/files/fubeguke.pdfIn PDF document text
    • http://princeworldwide.com/multimedia/userfiles/file/fafemuduleteso.pdfIn PDF document text
    • http://acrclubinversores.com/files/galeria/files/sojosazusutajamesewal.pdfIn PDF document text
    • http://myhomeinparis.com/userfiles/files/bowexenigaxelijosonogi.pdfIn PDF document text
    • http://arcos-eff.it/userfiles/files/73618398103.pdfIn PDF document text
    • https://www.luthier-auxerre.fr/ckfinder/userfiles/files/52085989492.pdfIn PDF document text
    • https://labelmarket.eu/data/file/17863048030.pdfIn PDF document text
    • https://neksav.com/upload/ckfinder/files/nukonimujejipekokene.pdfIn PDF document text
    • http://patanamachine.com/imgUpload/files/netogekowunenawuva.pdfIn PDF document text
    • http://chemonova.com/FCKeditor/file/58363925423.pdfIn PDF document text
    • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c5439dc7d0---xodepenoxoxivixodabep.pdfIn PDF document text
    • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/161398fe3cf048---rapabukebedepafis.pdfIn PDF document text
    • http://imapbook.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/masegixav.pdfIn PDF document text
    • http://uniontsg96.ru/admin/ckfinder/userfiles/files/21885285039.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_off0000caf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAF7 10428 bytes
SHA-256: cd535d8facacbc18104bf98b0b72c2f17e99c07cb688a1e38c0e84a90dafa874
font_01_sfnt_off0000e258.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE258 17364 bytes
SHA-256: 7b134368bad154c64f724cb4ddc5838809ad8a9a1aa7d77d233dbf21e22d2d38
font_02_sfnt_off00010f63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F63 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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