Malicious PDF — malware analysis report

Static analysis result for SHA-256 3449730e030a8b35…

MALICIOUS

PDF

96.5 KB Created: 2021-06-25 16:55:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: c32458cdd6d11fc9a16647165663a9cf SHA-1: ac9ffd6070e82fd5c20e36b43a962fa89d8a60f7 SHA-256: 3449730e030a8b359b30e235f6710e098501ec796a9fb930aea6437d50649204
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised websites, suggesting a phishing or malware distribution attempt. The 'SE_ENABLE_LURE' heuristic indicates the document likely instructs users to enable content, a common tactic for malicious PDFs. ClamAV detection and ML classification further support its malicious nature, classifying it as Pdf.Phishing.Trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 7

  • 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.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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://wavesmaroochydore.com/wp-content/plugins/super-forms/uploads/php/files/3ks7iq8sok3k2vm2hsphpsa3a4/68305359046.pdf In PDF document text
    • https://www.criteriainvest.com.br/wp-content/plugins/super-forms/uploads/php/files/gj18mo4n5dgp19jl7bk29admh9/xenunademosalevemasadi.pdfIn PDF document text
    • https://delaneyllc.com/ckfinder/userfiles/files/35057125722.pdfIn PDF document text
    • https://amblamy.ee/upload/file/90095387226.pdfIn PDF document text
    • http://amandamaitland.com/images/file/25838887559.pdfIn PDF document text
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fe9aebaa7b---13964093441.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b1c2141f07---nuniloro.pdfIn PDF document text
    • https://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/42fo0vutv3a1v94li7s98tbh13/77999306053.pdfIn PDF document text
    • http://fouladsazanco.com/Upload/file/torupuxexuwo.pdfIn PDF document text
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/p9qps4tk701ia7fbqtpedac604/12988457622.pdfIn PDF document text
    • http://activesolutionelectric.com/images/file/xagejafepode.pdfIn PDF document text
    • http://magooferta.pl/uploads/fck/file/88942043386.pdfIn PDF document text
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/160a4912ab877d---juzudevagadefonugovo.pdfIn PDF document text
    • https://dmvassociates.com/wp-content/plugins/super-forms/uploads/php/files/88199fd42d160f6209c51550521c86b1/61580286266.pdfIn PDF document text
    • http://aep-tc.com/cache/fck_files/file/lorekogigakunib.pdfIn PDF document text
    • https://dgaspcsm.ro/ckfinder/userfiles/files/18340628906.pdfIn PDF document text
    • https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/4f3cddbc42dfb022a9598afb7cbb58d1/magexebovifema.pdfIn PDF document text
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608fca5be4391---26881483649.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=the+great+stagflationPDF 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_off000117cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117CB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00012fe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FE2 10456 bytes
SHA-256: 2ce56d95fa390d221c9ba2635cefede5b857d5b308410e9b6b79f4a3a45a3064
font_02_sfnt_off0001478c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1478C 17852 bytes
SHA-256: 523adf295db9fb3c5f645204d84310b20d345cd21094631564997b7b44b19055