Malicious PDF — malware analysis report

Static analysis result for SHA-256 11dc2296dc2bf3bd…

MALICIOUS

PDF

74.4 KB Created: 2021-09-17 16:10:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 8560db56b02f3522f1d98fcbbe84e38e SHA-1: 1ba2ae595286174bd1bbd898f5e19da627edd555 SHA-256: 11dc2296dc2bf3bdf4675ad1d6d13026abb3c65fba6dc7b7c974071506c57133
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier, indicating malicious intent. It contains numerous links, many pointing to compromised CMS upload storage or disposable hosting, suggesting a link farm designed to redirect users. The presence of a QR code lure heuristic further supports a phishing or redirection attack pattern. No scripts were extracted, but the overall structure and URL analysis point to a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9840

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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/5it6m8fpjib3ii6hj7u8ruaqkn/59232082712.pdf In PDF document text
    • http://eia-edu.com/userfiles/file/1628541664.pdfIn PDF document text
    • http://propertiesforrent.com/userfiles/file///92826710498.pdfIn PDF document text
    • http://primebrokeragetx.com/ckfinder/userfiles/files/pujalatewafumulixemalij.pdfIn PDF document text
    • https://lensprovn.com/ckfinder/userfiles/files/87285340353.pdfIn PDF document text
    • http://mtecommerce.it/public/news/file/23748852457.pdfIn PDF document text
    • https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/1613f7bddb5f8a---gikeb.pdfIn PDF document text
    • https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/eb9fbd737a2126eef51a0121c2e86250/kugogilodilep.pdfIn PDF document text
    • https://gegeny.hu/uploads/file/zavapara.pdfIn PDF document text
    • https://xn--q3cceuw0c6ab0d2ii.com/upload_file/files/niwoturabika.pdfIn PDF document text
    • http://architettoangeli.it/userfiles/files/25742679458.pdfIn PDF document text
    • http://uekekb.ru/!upload/files/12122661795.pdfIn PDF document text
    • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613cfee7beba7---61731752395.pdfIn PDF document text
    • http://gourmethousemacau.com/UploadFilesfile///fisibanatinakiga.pdfIn PDF document text
    • https://madeinstlucia.com/userfiles/files/vunubesijanunarelebenomo.pdfIn PDF document text
    • https://vresponse.net/userfiles/file/mudibaxowunuwasepe.pdfIn PDF document text
    • http://fornacedelia.it/userfiles/files/fakatiwusu.pdfIn PDF document text
    • http://emeraldcovepartners.com/_data/images/file/bawopesefunopepekexuwatus.pdfIn PDF document text
    • http://xn--h1agcmh.com/ckfinder/userfiles/files/gatubaxore.pdfIn PDF document text
    • http://fotografoenricogiampieri.it/userfiles/files/tamixoleriwulafidaguwe.pdfIn PDF document text
    • https://fokusmedia.com/images/uploads/27850672817.pdfIn PDF document text
    • https://moma-restaurant.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a9fda277f7---84801716491.pdfIn PDF document text
    • https://getracemirates.com/userfiles/files/96195529503.pdfIn PDF document text
    • https://cissud.eu/uploads/ck_editor/files/kufugunoxipejaxeguvi.pdfIn PDF document text
    • https://fietenhaardenenkachels.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161432fe235eee---foxixodibidiz.pdfIn PDF document text
    • https://www.okcfarmersmarket.com/wp-content/plugins/super-forms/uploads/php/files/735908315c704591db9449cc5e6031cf/wililiwi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=qr+code+generator+online+free+downloadPDF 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_off0000bfd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFD2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d7e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7E4 17184 bytes
SHA-256: e2101a6714720b2dc16cb9e556000ac04e493be4f292ed11986f3cee6987ff11
font_02_sfnt_off000103d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103D9 10628 bytes
SHA-256: 8334147a9aaadea950e14b92b194b9fc1e3a79449d765331c58814f1ee16d41e

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