Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d0e29b87d723e39…

MALICIOUS

PDF

83.9 KB Created: 2021-09-01 13:32:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 6e704672296cfd5cbebca423e7f8b74a SHA-1: cc6fb8ab9e831897d302a266d8b936ad8b942ba4 SHA-256: 0d0e29b87d723e39878a85107087d8b049fb3ab7355aadd706afd9423b39b2ce
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It functions as a link farm, embedding numerous URLs that point to compromised WordPress sites and potentially malicious content. The primary purpose appears to be directing users to external, untrusted resources, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://archism.ru/uplcv?utm_term=echo+and+narcissus+summary PDF link annotation
    • https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/47oetpl17rktmgptd619k3tca7/92696740543.pdfIn PDF document text
    • https://vandolderskb.com/images/usr/5676747563.pdfIn PDF document text
    • https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079432b5316e---bavidaliluwoli.pdfIn PDF document text
    • http://ed-web.cz/userfilesfile/43223154130.pdfIn PDF document text
    • http://aliotoconsulting.com/clients/862286/File/kuzazulajelegawotukusav.pdfIn PDF document text
    • https://interconformity.ro/images/file/gegixutodubamoxafiw.pdfIn PDF document text
    • http://riverside-plaza.com/upload/userfile/files/46473010926.pdfIn PDF document text
    • http://iltorg.ru/upload/file/26046461036.pdfIn PDF document text
    • http://tingyi-bnb.com/CKEdit/upload/files/92402078585.pdfIn PDF document text
    • http://lncxjzxxw.com/upload_fck/file/2021-5-24/20210524224320437020.pdfIn PDF document text
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606def284af91---limutosa.pdfIn PDF document text
    • http://ownlines.com/upfiles/file/47740229339.pdfIn PDF document text
    • https://www.breastcancerfoundation.in/wp-content/plugins/super-forms/uploads/php/files/d99c2dc228a44b0a4daa2bfecf432a05/nawuwijezu.pdfIn PDF document text
    • https://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/9bca8aae791ff39d7dd9047403afaf24/89418877083.pdfIn PDF document text
    • http://dmychadla.eu/UserFiles/File/22151051315.pdfIn PDF document text
    • http://lapmaymn.samdigroup.vn/app/webroot/upload/files/96016309533.pdfIn PDF document text
    • https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/3626mb8coj1hpu5qum44b8mjv1/79201021259.pdfIn PDF document text
    • https://www.arc-welding.co.uk/wp-content/plugins/super-forms/uploads/php/files/4toj8tg0bhhi0gpk15ihl3v1nr/dibisobumaluxifuxe.pdfIn PDF document text
    • http://zlato-invest.cz/upload/files/gituxegixejum.pdfIn PDF document text
    • http://year-c.com/upload_fck/file/2021-8-30/20210830201637114297.pdfIn PDF document text
    • https://maviet.vn/upload/files/petopefet.pdfIn PDF document text
    • https://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/fb06371e064adcb976c21d4929d02758/16103792223.pdfIn PDF document text
    • https://milorem-service.ru/userfiles/file/37458938483.pdfIn PDF document text
    • https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ee0a1dbf55---89940334578.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_off0000e1ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1EF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fa06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA06 10556 bytes
SHA-256: 6c0aa0a172cfa6cfa148e872c22db57574057d84fbd708f5adab0d65c1a04421
font_02_sfnt_off000111d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111D7 18456 bytes
SHA-256: ece21afac424d5528de18b2627cc54a9954ba58d27853d86731040bcd8186443

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