Malicious PDF — malware analysis report

Static analysis result for SHA-256 32e0d83574151aef…

MALICIOUS

PDF

71.8 KB Created: 2021-09-02 04:44:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-01
MD5: 9e554518423589f069bfcec09e4bc245 SHA-1: 4cc7c933ca5ac11dab3857f3ec28b7ee356c1e3b SHA-256: 32e0d83574151aef70f91f4295dcc20b324f149f277fe3c5efd091a137c0146e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://scalper.ir/data/files/file/93951071934.pdf In PDF document text
    • https://mmszke.hu/files/file/mifigutaxepivirivafuf.pdfIn PDF document text
    • https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/dd2ab9ef1b09ee2dc9cf1590d2e308c5/37285577009.pdfIn PDF document text
    • https://digiconelectronics.com/media/miviliveguxepedonomi.pdfIn PDF document text
    • http://moonlightmontessori.com/upload/files/57974332633.pdfIn PDF document text
    • https://communeouchamps.fr/userfiles/file/94973624344.pdfIn PDF document text
    • https://perfecthospitals.org/FCKeditor/file/54595075262.pdfIn PDF document text
    • https://www.kalirich.com/wp-content/plugins/super-forms/uploads/php/files/o9u9bn6pa6q0ik15aroo8sef31/85181805106.pdfIn PDF document text
    • http://kuppersbusch-center.ru/uploads/files/22253147195.pdfIn PDF document text
    • https://investainternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160907f00d50da---xijovumiwerujowefebizepas.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/7272f598424011ef6c8ee5b30a8991f5/4795275909.pdfIn PDF document text
    • https://on-call-anatomist.org/ckfinder/userfiles/files/muziluwezuvozaputezase.pdfIn PDF document text
    • https://anfauglir.com/images/file/15437801447.pdfIn PDF document text
    • http://jpind.pl/userfiles/file/matuxanorevanofu.pdfIn PDF document text
    • http://sanzmendia.com/userfiles/files/rubesajitalujejo.pdfIn PDF document text
    • http://webinaris.training/ckfinder/userfiles/publics/files/22225110436.pdfIn PDF document text
    • https://amoslodge10.org/ckfinder/userfiles/files/93226963453.pdfIn PDF document text
    • http://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/161164ec96c3c0---tukajulodeb.pdfIn PDF document text
    • https://tecnibat.net/uploads/archivos/tuzobamupumoxasobivi.pdfIn PDF document text
    • http://www.rosabrockenhaus.ch/ckfinder/userfiles/files/47962433257.pdfIn PDF document text
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/d3981c446894b1b9f57a7be0d5fb38af/zadomi.pdfIn PDF document text
    • http://hotelniagararimini.eu/userfiles/files/wajexeladawisutirawapefan.pdfIn PDF document text
    • https://www.hdontheroadnapoli.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608ba9a52c846---wulutuvidosodidogida.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=different+business+sectorsPDF 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_off0000bcb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCB9 14672 bytes
SHA-256: da52d5ef654a4b3d25f87ae04fb34966752a034c560bb5c0d8a98c7ab9605e5f
font_01_sfnt_off0000e187.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE187 10364 bytes
SHA-256: ee99e1dd6e12face9049ae8f1b460c998ff5a56207ce49e47b9c8ea9c14c1076
font_02_sfnt_off0000f91d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF91D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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