Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed7350c4f49405f0…

MALICIOUS

PDF

84.2 KB Created: 2021-06-27 03:10:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 9c6bd07b17d5e72e2dd3bf3c4a71d681 SHA-1: 65640874ff987018e9533c8b8cdae2dd0dbd5849 SHA-256: ed7350c4f49405f066288d1f6a3ea60c0dd1abb43a96e8ff9eaa9b6f6016665f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The file functions as a link farm, containing numerous URLs pointing to potentially compromised WordPress upload directories. These links likely serve to distribute further malicious content or lead users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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 http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606caf7e9e288---24287815638.pdf
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160911bafc15b9---kabemaxuxaxuwategalafe.pdf
    • https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072b0bd629c3---15949068323.pdf
    • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609492585bc4d---pomuzosobed.pdf
    • http://www.photobreak.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16070d960072c3---liwubigudoverixazoded.pdf
    • http://www.moteco.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160b1668e10a58---turinumowukunivujuxajug.pdf
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/1607a81e7b9ae6---piwisigazomobumi.pdf
    • https://roeveragri.ac.in/wp-content/plugins/super-forms/uploads/php/files/14e731a3e3589ec6959ddad4c698ef20/zaxekagosisuvifiweve.pdf
    • http://smflow.in/admin/uploads/file/dimebuxinid.pdf
    • http://www.elitagida.com.tr/wp-content/plugins/super-forms/uploads/php/files/k4a0jojuqbjb2aogtv1r7osip6/16286183577.pdf
    • https://southtours.com/wp-content/plugins/super-forms/uploads/php/files/hq47cllrtfuiqtrpokq0g9t4oa/samixovepidumiwogup.pdf
    • https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/36aed2d294eaf6a8611520efbfeaa409/76919379256.pdf
    • http://mmprogetti.it/userfiles/files/sasisujakenabotoret.pdf
    • http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a3fa5596e95---jedepumurejuwazupofatobeb.pdf
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bdc214aa09e---faboruno.pdf
    • http://crabandclaw.com/uploads/files/75351910640.pdf
    • http://robertfeinberglaw.com/images/edit_images/file/80826478367.pdf
    • http://www.grupohk.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160aac190a0675---21530856304.pdf
    • http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/984e97fbcb5c13e6e5ae34da105c3dbf/susadudidusugevofiwubaxu.pdf
    • http://airconbank.com/upload/fckeditor/file/45262887641.pdf
    • http://www.rkcomdesignservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b181795d47---ronukafulutozalumisunu.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=cold+can+cause+loss+of+smell
    • http://lovewhereyoulv.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/41d61dd8683cc24201df171e70ee8a14/vovawebiwutinuzapoveza.pdf
    • http://pro.ovh.net/~tribuene/images/banque/file/30627337996.pdf
    • 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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8a0.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8A0 16792 bytes
font_01_sfnt_off000100b2.bin
53e2bc9b21d049ccc906bd707c01978fa0de4b8ee598e0b26384319f42cb09c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100B2 16576 bytes
font_02_sfnt_off00012bf8.bin
40618ca130c31a7cf77a7eec0d7b0db95abfa0269b7bda9211838bc52a399329		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12BF8 10480 bytes

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