Malicious PDF — malware analysis report

Static analysis result for SHA-256 14e76871dc0b56ab…

MALICIOUS

PDF

81.8 KB Created: 2021-09-08 10:54:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 6118b63213e6e4d2f796f3939d14c80e SHA-1: c89cea3ac68973d8a9ac1a10c541139befbd32e8 SHA-256: 14e76871dc0b56abdfd66d1e69178b57c8f24c8c648867901f687aebb358d92b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm pointing to numerous domains, many of which are either compromised or use disposable hosting, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly suggest malicious intent, likely to lure users to malicious sites by disguising them as legitimate documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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--82ca1bkibi6eufn5bh1b7i3e.com/UserFiles/File/xepaxusa.pdf In PDF document text
    • https://tyeetomsfishing.com/userfiles/file/9881948956.pdfIn PDF document text
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/5997c8ould1uhieuobm1vgoj8l/xemofojetufi.pdfIn PDF document text
    • https://www.tri-or.fr/tri-or/ckfinder/userfilesfiles/tedameloviserinemuwed.pdfIn PDF document text
    • https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/62dc321429dd93a336ce2a73fc6fbc5e/siramifezamisud.pdfIn PDF document text
    • https://datajournonepal.org/files/xugalaxelutexe.pdfIn PDF document text
    • http://king-tableware.com/uploads//files/202108121537507399.pdfIn PDF document text
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d3c3d9b6ff6---57876432465.pdfIn PDF document text
    • https://mahanakhon.pacedev.com/ckupload/files/zoporadirafalanupefi.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/g9f032k5u0gl5ebbkq7otrfil3/sexejokugowuzoviborobeg.pdfIn PDF document text
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a385f69295---82973019942.pdfIn PDF document text
    • https://ascinfratech.com/clientprojects/trading/file/derujo.pdfIn PDF document text
    • https://afayl.com/userfiles/file/berik.pdfIn PDF document text
    • https://akvaguru.hu/user/file/totama.pdfIn PDF document text
    • https://pensionatiitalianiinportogallo.it/wp-content/plugins/super-forms/uploads/php/files/0e22bba6d3ea18f2e63203d127e52b43/46645838369.pdfIn PDF document text
    • http://petraifevronii.ru/ckfinder/userfiles/files/14611720972.pdfIn PDF document text
    • http://uco-kampen.com/media/files/61379912615.pdfIn PDF document text
    • http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/16085be08dd3b6---58917562318.pdfIn PDF document text
    • http://reclameindex.nl/images/uploads/55423322510.pdfIn PDF document text
    • https://greyquotient.com/wp-content/plugins/super-forms/uploads/php/files/68dd25459f6401ed32f4c494b2576322/zidipofelekijetajilojawe.pdfIn PDF document text
    • http://coaching-scolaire.net/userfiles/file/buxuxuwuza.pdfIn PDF document text
    • http://xn--pr3b03lcdvwu9dpynqkc.com/DATA/file/20210902082925.pdfIn PDF document text
    • https://careersourcechipola.com/files/public/5766205237.pdfIn PDF document text
    • http://zcapitalcrm.com/app/webroot/uploads/files/38573131176.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=ipython+notebook+save+output+to+pdfPDF 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_off0000d8d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8D5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f0ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0EC 10820 bytes
SHA-256: c5169c60fefcf18eefec826ed4a86f5a9fc028e108c8db994abaff0a660f6aaf
font_02_sfnt_off000109ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109AD 18352 bytes
SHA-256: e8a831a09c94ff81df68df45d803b93554543229ff965616c2e02d36439cd003