Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0075960253b02e1…

MALICIOUS

PDF

88.3 KB Created: 2021-07-16 08:06:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 0701ca15b0fab7c3955452efb767205e SHA-1: a9096836e3d39c1c26e53380c2008812c9badb0e SHA-256: d0075960253b02e128fd9ae40d4ec860128ad03631d9c6274011b7276e13ad6f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous URLs pointing to potentially compromised WordPress sites or disposable hosting, likely to distribute further malware or phishing content. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to lure users to malicious sites, aligning with a phishing or malware distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

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://thetitangroup.ca/wp-content/plugins/super-forms/uploads/php/files/3c1d3d55bee2ec0b735aea7e714fe0f4/15345846473.pdf In PDF document text
    • http://files.ibiza-ferien.de/file/dukepan.pdfIn PDF document text
    • https://maxim-catering.de/wp-content/plugins/super-forms/uploads/php/files/rfhujh7shkvma2r1df6uuvq9fi/tajoloxo.pdfIn PDF document text
    • http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b38e7f5f6a3---dixuwozuf.pdfIn PDF document text
    • https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fea9f32cdd---40686817091.pdfIn PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a12f47cad85---48075646138.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609c5c568db72---84500665124.pdfIn PDF document text
    • https://otdelkamos.ru/wp-content/plugins/super-forms/uploads/php/files/0a7802d1f83d908257d5c93612083f73/wojufakugivurewugepusi.pdfIn PDF document text
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa256123bf1---92380184871.pdfIn PDF document text
    • http://bestbelly.org/content/files/files/96487159225.pdfIn PDF document text
    • https://signaturetowerpune.com/wp-content/plugins/super-forms/uploads/php/files/tedj7iq9rtk31f47v5srtgblb2/wafozoxu.pdfIn PDF document text
    • https://victory-agency.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088acbf7a4d4---13734974565.pdfIn PDF document text
    • https://himalayanthailand.com/image/upload/File/8461984042.pdfIn PDF document text
    • http://aven.su/userfiles/file/51923934612.pdfIn PDF document text
    • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/160ac7b7a09cee---70157960413.pdfIn PDF document text
    • http://fixmyhelicopter.com/project-new/christianbook/upload_images/file/lokilas.pdfIn PDF document text
    • http://amandatravel.com/userfiles/file/moxegibuvugonaxeged.pdfIn PDF document text
    • https://slavica.ru/wp-content/plugins/super-forms/uploads/php/files/52fb5591f858f5fd8c6e00441e0398b7/bunobapaluteruziwu.pdfIn PDF document text
    • http://www.grundys.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a548addc844---sutasanawave.pdfIn PDF document text
    • http://cementfeet.com/userfiles/file/nawikerarukomegab.pdfIn PDF document text
    • http://www.aqsclimited.com/EditorImages/file/tenumokurumijoneguputed.pdfIn PDF document text
    • https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/3c87dbfa31989be14af977a10466574b/sagixodiwuzepi.pdfIn PDF document text
    • http://www.jindatunnel.com/up_files/file/mozililavowud.pdfIn PDF document text
    • http://lindendirect.com/ckfinder/userfiles/files/zakupiva.pdfIn PDF document text
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081e0e88912f---90966178615.pdfIn PDF document text
    • https://alate.org/admin/fckeditor/editorfile/94061603632.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=the+women+of+troy+don+taylorPDF 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_off0000f440.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF440 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010c52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C52 18240 bytes
SHA-256: 22ea93781e0a98a16621f695645c56b9281367755579449a676c6d64026c1dfc
font_02_sfnt_off00013be1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13BE1 10524 bytes
SHA-256: b0b81beace6c1e6d530c554c02ed906df7d1fac6d8d90b37a5bfa06e12688859

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