Malicious PDF — malware analysis report

Static analysis result for SHA-256 bee30d6206183cfb…

MALICIOUS

PDF

92.7 KB Created: 2021-08-12 14:08:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: c1f4b6ee2c18dace46b6951015766bb9 SHA-1: b41fc8230305ef10cd25188f20a59eb10841fd80 SHA-256: bee30d6206183cfb0edda981223aaabeccfe9c9354e10c239c2cd66b10a86a93
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous external links, many pointing to compromised CMS upload storage and disposable hosting, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the structure and URL patterns are consistent with malicious PDF lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://ltgtrends.com/wp-content/plugins/super-forms/uploads/php/files/2483931b0280f49f0e398b5a49d90ae3/88422685435.pdf In PDF document text
    • http://lindendirect.com/ckfinder/userfiles/files/vesigogigor.pdfIn PDF document text
    • http://blackivy.pl/userfiles/file/loson.pdfIn PDF document text
    • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/160826f91af8d8---66814642775.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c76191ee59.pdfIn PDF document text
    • http://hrdiborice.cz/erucom1/files/files/46863601565.pdfIn PDF document text
    • http://info56.ru/userfiles/file/zisejuvimufimasidate.pdfIn PDF document text
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/34a763cdbee6701d369b0ae2a3416053/sigataduzo.pdfIn PDF document text
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608efc7414a96---goxakukelogaziguxonekik.pdfIn PDF document text
    • http://symbioticlifetech.org/attfile/fckimg/file///20210707193745_739807355.pdfIn PDF document text
    • http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/uf5hukai7vo9hfu0a6rj3aju71/99127642634.pdfIn PDF document text
    • http://mehmetrasimmutlu.com/icerik/file/16564689511.pdfIn PDF document text
    • https://istanajpdua.com/contents//files/pugitunaje.pdfIn PDF document text
    • http://www.anjhimayath.com/upload/file/kitogepoxojejalizu.pdfIn PDF document text
    • http://itaindustrial.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160da73bb059bb---lutovewanozewixinubapiper.pdfIn PDF document text
    • https://shayangroup.net/wp-content/plugins/super-forms/uploads/php/files/11771be5a25515a110a7ea9f1267dbc6/wudujimolarekaperadova.pdfIn PDF document text
    • http://artistalexanderkanevskyroyalshakespeareglobetheatrelondon.com/clientMedia/file/kurafabemagenisaxeret.pdfIn PDF document text
    • http://bmhs71.com/clients/c/c9/c97ff408e01126d63256cf68004d6641/File/57936903629.pdfIn PDF document text
    • http://siltherm.com/ckfinder/userfiles/files/dusatoradifizugobezunaju.pdfIn PDF document text
    • http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1606cfe38bf1ad---finavoz.pdfIn PDF document text
    • http://muzycznescyzoryki.pl/userfiles/file/38846717723.pdfIn PDF document text
    • https://spazmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16109cc3910d66---12110243989.pdfIn PDF document text
    • https://panegovernance.com/ourprojects/chowki/UserFiles/file/zevalunewanoxikafeg.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=juno+pelicula+completa+en+espa%C3%B1ol+latino+online+gratisPDF 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_off000102e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102E6 11016 bytes
SHA-256: e62ac9028e9bf7d5a024eb960188146c30389a65e32a6bb6ab0ee091025259e3
font_01_sfnt_off00011c43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C43 18272 bytes
SHA-256: 8d892c3ff1996da62d224dbaa05deba062d78ecd3be2e32affd39d57d90cb9d0
font_02_sfnt_off00014a55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A55 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1