Malicious PDF — malware analysis report

Static analysis result for SHA-256 be60d0289d4f4239…

MALICIOUS

PDF

71.0 KB Created: 2021-06-11 00:02:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 27583aff2de026f1befa13d2744ab739 SHA-1: c7114c1d2310128a4892cbf6a0ac6f913b4f38db SHA-256: be60d0289d4f42394243b154519b4650cd0c1744c901a1a4448a27c104a51711
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with attempts to lure users to external sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 https://pixomot.ru/uplcv?utm_term=watch+spider+man+homecoming+google+docs
    • https://drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606d522680c12---linowaruwegawikinu.pdf
    • https://atx-stroy.ru/wp-content/plugins/super-forms/uploads/php/files/9595baf9d8dc337aca80b7569f9b07cd/telaketusejumovus.pdf
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/24l251ak4tic0f8ku4bsecec7l/bivutunevutamawobuxubaso.pdf
    • https://almondzwealth.com/administrator/imagetemp/file/woliriwepiz.pdf
    • http://thedewakohchang.com/image/upload/File/62398014.pdf
    • http://ferrogep99.hu/static/media/file/65125404666.pdf
    • http://santeh.md/img/files/waxavaritilefusutagofo.pdf
    • https://traveltokiev.com/wp-content/plugins/super-forms/uploads/php/files/4rsmm2l47tqgivl57162oboip5/13454588481.pdf
    • http://sad-azov.ru/wp-content/plugins/super-forms/uploads/php/files/0be071a1be1d9dcf5a7ca3ab0627750d/xeragikidifunani.pdf
    • https://contabil-fiscal.ro/mm/file/jezopofenatitetegapabezo.pdf
    • https://agermag.ro/mm/file/19258860620.pdf
    • http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/ddc8a6c07cdf8d34253456f978a7312b/9384457202.pdf
    • http://alliusie.com/userfiles/file/50112959180.pdf
    • https://aradovan.com/userfiles/file/63170118230.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d383.bin
117930ff5f45f18e126922ea4f93b92dfadc4888b09ad74c56a879b4258e526b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD383 5500 bytes
font_01_sfnt_off0000e617.bin
fe90f947a1019a38b9f268300133173adb086685c97fc9af14700d38b0243195		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE617 11952 bytes

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