Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ce89d70e4d35ca2…

MALICIOUS

PDF

75.7 KB Created: 2021-09-01 17:03:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 3d7b0fed0cb20904f894622f0027af48 SHA-1: 529c18bacb90e86517ab59351a3584f94f0db693 SHA-256: 2ce89d70e4d35ca2adf83823c42ae5b856a179549eb6960f3a28a1945dc02b6e
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 compromised WordPress sites, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The primary purpose appears to be directing users to potentially harmful external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 6

  • 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.
  • 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://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607505dcb7233---wafinozizonuj.pdf In PDF document text
    • http://tcsm62.org/uploads/news/file/nojunijasolobovi.pdfIn PDF document text
    • http://restravel.ru/ckfinder/userfiles/files/12975436250.pdfIn PDF document text
    • http://daugiavanthienphuoc.com/media/ftp/file/lapijodiluwokole.pdfIn PDF document text
    • http://retco.ge/ckfinder/userfiles/files/86703289028.pdfIn PDF document text
    • https://kindliving.org/wp-content/plugins/super-forms/uploads/php/files/tmp/49139064600.pdfIn PDF document text
    • http://wongkungfu.ca/clients/f/f5/f5c316b966f29b3192b3e9e3c5714b3c/File/mumubaxixaporal.pdfIn PDF document text
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ed2cb0d6af---vazetiwin.pdfIn PDF document text
    • https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ff56d27885---jodotamuvuze.pdfIn PDF document text
    • http://studio70.eu/userfiles/files/tizekug.pdfIn PDF document text
    • https://safehouseservices.in/fckfiles/file/53457492158.pdfIn PDF document text
    • https://limberhurstgallery.com/imageuploads/file/pimapojulekedinewovuxi.pdfIn PDF document text
    • https://akapacha.com/userfiles/file/makefefogomudejafunevejed.pdfIn PDF document text
    • https://delphin-bau.com/ckfinder/upload/files/15428056400.pdfIn PDF document text
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ed1ce5d1ef---77721110082.pdfIn PDF document text
    • https://taevlingar.se/images/pages/file/35196749064.pdfIn PDF document text
    • https://latework.cz/soubory/gotar.pdfIn PDF document text
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083f0488eefa---silukudekifuwitipudanexag.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/irkjig2gdrnak5ejt00gvfmn01/riridame.pdfIn PDF document text
    • http://www.lauricedale.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160768a81528f4---litulorera.pdfIn PDF document text
    • http://achilleferolla.it/userfiles/files/46827691863.pdfIn PDF document text
    • http://fueandhair.com/userfiles/files/fidujifafumirale.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=the+meaning+of+kadenPDF 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_off0000c2c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2C3 10444 bytes
SHA-256: d66e45eec650399993568790854a75d88989644266b209e6bb59583ce1a34a5c
font_01_sfnt_off0000da01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA01 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF213 17928 bytes
SHA-256: 8228424e432b91a85ef22a2d2d8c48c1b118c56124d59e9556913a7065153ed5

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