Malicious PDF — malware analysis report

Static analysis result for SHA-256 26e214473a704943…

MALICIOUS

PDF

88.8 KB Created: 2021-09-06 00:06:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 101eee131489a708995ee8b30f0221d6 SHA-1: baf174ec0ce8b029f4890b9a806521781bacffb0 SHA-256: 26e214473a70494382d6585703d54d83a2e156433bcfd1af1528d5aba8d6b57e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious. It contains numerous external URIs and links to compromised WordPress sites, suggesting it is part of a link farm designed to redirect users to malicious content. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. No scripts were extracted, but the overall structure and URL patterns indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://catamma.ru/uplcv?utm_term=metabolismo+del+hierro+pdf+2019 PDF link annotation
    • https://cortemadera.com/wysiwygfiles/file/kokiferobalanejetijowase.pdfIn PDF document text
    • http://ildongwire.com/userfiles/file/27399654272.pdfIn PDF document text
    • http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16087dffb138a5---vamiboxux.pdfIn PDF document text
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/735a48c178d9f4bdcf2a2503617d1221/jonota.pdfIn PDF document text
    • https://sidexsideaudio.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4758db17e5---91106377418.pdfIn PDF document text
    • http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/4a87c4cc2f29682392e61adba7a2d019/tudokemapanamive.pdfIn PDF document text
    • http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a890954d40d---nabusewoxovuzewutib.pdfIn PDF document text
    • https://ymvii.com/admin/upload/files/35185837802.pdfIn PDF document text
    • https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ee5753dafaf---96733898483.pdfIn PDF document text
    • https://ytdrive.com/CKEdit/upload/files/fafig.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/44163f185817ade05c7b693082a93594/rejexivupafizoto.pdfIn PDF document text
    • https://nonbodepsg.com/uploads/files/73843144443.pdfIn PDF document text
    • https://www.alarisusallc.com/wp-content/plugins/super-forms/uploads/php/files/e24a2a8b96e1158aed406c1c04a52f10/dusin.pdfIn PDF document text
    • https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/of0dvugn7uv855o9q1d31866k5/nigokawuridivewimaxadud.pdfIn PDF document text
    • http://fantalife.nl/userfiles/file/4572563476.pdfIn PDF document text
    • http://anhuizhkj.com/upload_fck/file/2021-5-1/20210501034901211508.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161038f1329b88---263280014.pdfIn PDF document text
    • http://er-trans.com/img/produkty/files/faxodadipaxinajuzo.pdfIn PDF document text
    • http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab84e2a1176---12815920569.pdfIn PDF document text
    • https://futuresbuilder.net/dayafter/uploadimages/newsimages/file/99267708316.pdfIn PDF document text
    • http://silverk.ru/img/lib/file/tasalotojeki.pdfIn PDF document text
    • https://binarbaid.com/public_html/userfiles/file/50757013792.pdfIn PDF document text
    • http://montaze.org/democms/userfiles/file/25676160381.pdfIn PDF document text
    • 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_off0000f03c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF03C 11252 bytes
SHA-256: 41e8638d7cc90dc4395dd391fffc01e1c15e771f0b3a3d2fbd7c188cf67f22d9
font_01_sfnt_off00010a70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A70 19252 bytes
SHA-256: 4056ccb848abdc541f86589468eb03d5761bc6efb4ccea07c86471edaaff1c54
font_02_sfnt_off00013bbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13BBB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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