PDF malware analysis — malicious · 02ec386ec6c692fd

MALICIOUS

PDF

94.2 KB Created: 2021-08-14 21:32:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24

MD5: 40623ba0445992d8df10ae0135376456 SHA-1: 4774f259e34d074a952190b9d8963be6f562adcf SHA-256: 02ec386ec6c692fd59a781b0c4937942de9db35c85a8078831aef17e7639d9d1

164 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous links to external websites, many of which appear to be compromised WordPress installations used for hosting malicious files. The 'SE_INVOICE_LURE' heuristic suggests the document's content is designed to trick the user into taking action, likely to download a payload from one of the provided URLs.

Machine Learning

Nyx PDF Classifier malicious score 0.9958

Heuristics 7

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.
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://huntic.ru/uplcv?utm_term=vapor+storm+puma+200w+user+manual PDF link annotation
- http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608f76f11a1f2---34309931452.pdfIn PDF document text
- http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f65bfe9ebb---3611001478.pdfIn PDF document text
- https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094679e192f8---subal.pdfIn PDF document text
- http://aristosaigonhotel.vn/uploads/files/46377889814.pdfIn PDF document text
- https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/36b4ffaf66500c11a9c8dd1c2efa096c/79898041616.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4dfcf6c63b---mesitaluxipisovovup.pdfIn PDF document text
- https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/5231a03cb1339efdd842d57a90b76c23/75427259085.pdfIn PDF document text
- https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/32148abb1f00b88d22607f26466f33b1/worobupoxaledere.pdfIn PDF document text
- http://zulassung4you.de/bilder/file/22866445021.pdfIn PDF document text
- https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/5190g1494bea79nkt6ef917i9d/govakova.pdfIn PDF document text
- http://bmhs71.com/clients/c/c9/c97ff408e01126d63256cf68004d6641/File/45755668863.pdfIn PDF document text
- http://www.accessibilite-salle-eau.com/ckfinder/userfiles/files/1140207328.pdfIn PDF document text
- https://flyags.com/editorResources/file///77850843420.pdfIn PDF document text
- http://bannails.com/fckeditor_userfiles/file/24324801150.pdfIn PDF document text
- https://ourlady-schools2.com/userfiles/files/jupumabukakerewolumus.pdfIn PDF document text
- http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/160efd6276fdb5---lufufanewokagubibenot.pdfIn PDF document text
- https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/9ba68b6a82dd3950db0ef49f47598441/65427284854.pdfIn PDF document text
- http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b063f7ea4f3---juwonimus.pdfIn PDF document text
- https://calldidocta.com/wp-content/plugins/super-forms/uploads/php/files/93243307d6f6faf20c9bdd29e5b2c887/7505207243.pdfIn PDF document text
- http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1609459088252c---fokodi.pdfIn PDF document text
- http://danfilenemd.com/clients/67744/File/liforineduruzixupi.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e7e1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE7E1	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000fff3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFFF3	23300 bytes
SHA-256: `947f16660dee8b33e68f7cad54ffa8d3a11fb4c9fd2aef4adefabc38f8f6fd37`
`font_02_sfnt_off000138e2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x138E2	16304 bytes
SHA-256: `727b761dd601f14e8bd22d0a41c491c9eab5829d8e28bf0500481f57196f18d2`
`font_03_sfnt_off00014f2c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14F2C	10716 bytes
SHA-256: `72f306da434d40b8c20d8a9ab29f8d842c0d96a0f329905a19a7d3bb6496dc72`

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