Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e21619477b26f64…

MALICIOUS

PDF

66.5 KB Created: 2021-05-07 13:48:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 14d9e6540f71fa83c95edd43fbc7f7a1 SHA-1: 236ace8e8d09d939f60641e302ddc3301a5b4bfe SHA-256: 0e21619477b26f64cce2a911006ae13c6e060f0c2da2f5c7da123e4dc4c6f0d3
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm pointing to compromised WordPress sites, likely serving as a lure for users to download further malicious content. The document body's mention of an 'invoice free template' supports the phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/rondcc2ckhstq0ahedktcuolp5/zaripukarodogala.pdf
    • http://eltonltd.ru/sites/default/files/uploads/zibep.pdf
    • https://www.properties-thassos.com/wp-content/plugins/super-forms/uploads/php/files/4nogq11nfqkk07vg4ql90d8eir/gujedopupogidonedazo.pdf
    • http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/4005185a86ee3758af158f2bf4422df0/55081895494.pdf
    • http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b9483cc119---kusibusilunu.pdf
    • http://aelma.com/sites/default/userfiles/file/duvovekiwa.pdf
    • http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/3cdf7f2b1cf84cf08915b7dc28d6dc77/39468162819.pdf
    • http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607882ca0c07e---zugigiki.pdf
    • https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606c93fd54e41---zatadivufufigo.pdf
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/160808b95bf964---tivamilifutodi.pdf
    • https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/903d5b4391e4f0c2c51f9088e24091ac/bubof.pdf
    • https://bodwellassociates.com/wp-content/plugins/super-forms/uploads/php/files/358f1b8c9da28213510963837fd08ec9/xagajileged.pdf
    • http://xn--80aaeiengkwpz6p.xn--p1ai/pub/file/senemo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=simple+invoice+free+template
    • 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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c969.bin
932e8d305ea4b7d48dcea8eb739273eedf65370569067924fd8e9e25b4ea62db		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC969 5148 bytes
font_01_sfnt_off0000dae2.bin
1f14aaeb8871a3a39c4a58c71d15364db935d4ade644976f1a4ddb815c82e6d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDAE2 10172 bytes

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