Malicious PDF — malware analysis report

Static analysis result for SHA-256 6092da06a494cf28…

MALICIOUS

PDF

87.8 KB Created: 2021-06-26 03:56:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 449bfe3e590db9899dd0453ddb41cd5e SHA-1: 3d6ef9f122fa2eb4382791dffe31a84b6f3370d8 SHA-256: 6092da06a494cf285ed3064e81b5186448563ff1f95b11174bad81779928334b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous links pointing to compromised WordPress sites, likely intended to lure users into downloading further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically identified as phishing or a trojan. The file's structure as a link farm on disposable hosting further supports its role in distributing malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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 https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/16081a558c1cce---misubenavodek.pdf
    • https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094bd039edf3---57653924286.pdf
    • https://www.hdontheroadnapoli.it/wp-content/plugins/formcraft/file-upload/server/content/files/16074a735cd9e8---42562450054.pdf
    • https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/2fd14589b775a873fc10d404f063dc5f/lebujunogavetidunipipawo.pdf
    • http://apartmaji-zunicmile.com/uporabnik/file/bimegokikilinurud.pdf
    • https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/c8cbbacb3d09df8141f2c99350edc204/34317191211.pdf
    • http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/38qvr1ndslnc9f3du5lljq8a97/40620850126.pdf
    • https://floorco.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/b746336adc240c8ba6a72879c944d0d8/19570876049.pdf
    • https://theemperorsoldclothes.co.uk/wp-content/plugins/super-forms/uploads/php/files/dbcbq9r63hf9e2k5dcrh4jarmi/91510854302.pdf
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16075cbfc17752---23832597925.pdf
    • http://optimus.org.au/wp-content/plugins/formcraft/file-upload/server/content/files/16082057d42b39---zawutebubarinalusi.pdf
    • http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608153ba71c8a---nufivaxajikurajulo.pdf
    • https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b77e03567eb---jukanabagip.pdf
    • http://creativeindustries.ru/uploads/userfiles/file/parisisesebidigafojivexej.pdf
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/ef737d10884566489f1a01b1419ad408/30503437561.pdf
    • http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16085bf761f159---kijapuxuxe.pdf
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ce24fae2845---6152018495.pdf
    • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086c42501062---xamakikidikivigosekuvas.pdf
    • https://jgmurphy.com/wp-content/plugins/super-forms/uploads/php/files/907955be9f24011770584252503343c7/79915032636.pdf
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160afd47e984b7---kedamuje.pdf
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16073de7d83519---87745584996.pdf
    • http://mastervgtour.by/var/upload/file/xawuzaduzilujuzib.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=eliphalet+name+meaning
    • 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_off0000f47c.bin
25d95e4ce9b82bd9db2c8c2ae2d779ef42d9ac1fb7e377fa2d110703fe251d7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF47C 18624 bytes
font_01_sfnt_off00012349.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12349 16792 bytes
font_02_sfnt_off00013b60.bin
9ff13b165b6eb43473a54e9537730f201f427f333be45687ff2a4b7657bb9ac9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13B60 10292 bytes

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