Malicious PDF — malware analysis report

Static analysis result for SHA-256 f197ad92c0fa4af8…

MALICIOUS

PDF

74.0 KB Created: 2021-09-03 16:55:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 45e0165fa186bf589155efa595cfbb21 SHA-1: 3881d1aa6b6d19bb2d7066d4a0221d5648ec22e4 SHA-256: f197ad92c0fa4af834a47c5c91d4f18b3b43690e0d8ba2d5da5f6ec2dfd0ef00
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a link farm pointing to multiple domains, many of which are identified as compromised CMS uploads or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery. While no scripts were directly extracted, the PDF structure and URL patterns suggest it's designed to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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://fwstc.in/userfiles/file/jadafatonuneziri.pdf In PDF document text
    • https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e232cd612e---30322141696.pdfIn PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607eea56e9789---94320337131.pdfIn PDF document text
    • http://carrollcountylawyers.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/zuviku.pdfIn PDF document text
    • https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/d3l2rmilhimu1nrp9l13beh901/53376073371.pdfIn PDF document text
    • http://avandcie-energy.fr/ckfinder/userfiles/files/tepunojuzagapizikegobizar.pdfIn PDF document text
    • https://mikepromedia.com/wp-content/plugins/super-forms/uploads/php/files/5j85ih53gshd3ut8s4an83ddq6/91462649774.pdfIn PDF document text
    • http://www.awakohchang.com/image/upload/File/8683361428.pdfIn PDF document text
    • http://hoangminhphatkorea.com/webroot/img/files/16862903925.pdfIn PDF document text
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096254643d4d---nudugevafine.pdfIn PDF document text
    • http://2020kellyfamilyreunion.com/clients/1/1c/1c0e63424c3b5e20a3d858f77c59864f/File/57595074108.pdfIn PDF document text
    • https://arizonalightingsales.com/wp-content/plugins/super-forms/uploads/php/files/defc2cdfc258e9e8a169954aaa6fdd50/vulowo.pdfIn PDF document text
    • http://heyumpnd.com/userfiles/file///xiwikabeken.pdfIn PDF document text
    • http://www.ujepites.hu/userfiles/files/42873893426.pdfIn PDF document text
    • https://socialacademy.gr/wp-content/plugins/super-forms/uploads/php/files/3dabf34405b53122ebb75916e46324c2/55094125419.pdfIn PDF document text
    • http://associacaoguainumbi.org.br/wp/wp-content/plugins/formcraft/file-upload/server/content/files/1607d7ed6d4c29---jukewi.pdfIn PDF document text
    • http://smm-mm.com/uploads/news_file/65225461945.pdfIn PDF document text
    • http://www.alquilerbares.com.ar/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9556a8300---99991350452.pdfIn PDF document text
    • https://opsclown.it/ckfinder/userfiles/files/xevosobixavodinat.pdfIn PDF document text
    • https://darshanam.com/ckfinder/userfiles/files/fakizolubed.pdfIn PDF document text
    • https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/2cl6k0gml8ujap376fijd48r2s/wewazofag.pdfIn PDF document text
    • https://roweryelectra.eu/app/webroot/uploads/file/16265035889478.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=blank+periodic+table+printable+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_off0000bf2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF2E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d740.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD740 16576 bytes
SHA-256: 5d08b3960acd2ca912f5ac7843d9825c6511102a8bfbf09ef837334ef8d66735
font_02_sfnt_off000101c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101C9 10728 bytes
SHA-256: c0da1fbf7187fc9eba390cb424bd3520f697bffd12856a588a2904713289a173

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