PDF malware analysis — malicious · 2ba0a40b85c77925

MALICIOUS

PDF

76.2 KB Created: 2021-06-30 09:08:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05

MD5: b3b2c48fb277c11a234fb5bf448a3ac6 SHA-1: 243154358814a484ac3e0c8738b328344d3be87b SHA-256: 2ba0a40b85c77925aa7e561281a67677e0565778cf164974cf1e545179d4997e

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. Heuristics identified it as a link farm pointing to compromised WordPress upload directories, suggesting an attempt to host malicious files or redirect users. While no scripts were explicitly extracted, the nature of the links and the detection suggest it's part of a phishing or malware distribution campaign.

Machine Learning

Nyx PDF Classifier malicious score 0.9953

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://frontiersneurophotonics.org/wp-content/plugins/formcraft/file-upload/server/content/files/1/1606f6e957e4f2---mogowezagakurutuvu.pdf In PDF document text
- http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d3e8cac9f91---83611994452.pdfIn PDF document text
- https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab37499d0be---28131783053.pdfIn PDF document text
- https://www.couleurs-et-jardin.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607d30e318e62---tufesetebunixuvowamamuz.pdfIn PDF document text
- https://samngaimarble.com/html_upload/file/fotuzupowuludubipaf.pdfIn PDF document text
- https://funkydrop.shop/wp-content/plugins/super-forms/uploads/php/files/65024feea9ae8ea460639a1a28fe93d7/75628186826.pdfIn PDF document text
- http://cnex.cc/images/blog//file/mutewewimujob.pdfIn PDF document text
- https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/f361dee6318bcc9f1075a061581dac84/77516214400.pdfIn PDF document text
- https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ec65e52a40---xesepuzamoxitewosuwab.pdfIn PDF document text
- http://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/98767511eea51ba3f0a482bb67b2228a/gajivuxejeresezubejebavu.pdfIn PDF document text
- http://wsystem.sk/userfiles/files/jupofomeweposorezuw.pdfIn PDF document text
- https://mkting.com.co/wp-content/plugins/super-forms/uploads/php/files/62088fb765c2aaeff7607b171f06d3e3/pepid.pdfIn PDF document text
- http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/4fd1f655c1e54159276d7ed543508ea7/wevikesir.pdfIn PDF document text
- https://congchungnguyenlieu.com/uploads/files/79360501691.pdfIn PDF document text
- https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160856c2dbafbd---35827323423.pdfIn PDF document text
- https://baxsporthorses.com/userfiles/file/jugurasubezanas.pdfIn PDF document text
- http://creativeindustries.ru/uploads/userfiles/file/lezafejiku.pdfIn PDF document text
- https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb13d959ab7---49336841697.pdfIn PDF document text
- https://jiptv.nl/wp-content/plugins/super-forms/uploads/php/files/au8nf5p5m853rvap0bb9ng564j/83567176037.pdfIn PDF document text
- http://apexibd.com/uploads/fck_uploads/file/88418172239.pdfIn PDF document text
- http://neodev.space/wp-content/plugins/formcraft/file-upload/server/content/files/16099b93d6a948---kilirowaleruxigisusenig.pdfIn PDF document text
- https://travelinnsuites.com/nbloom/fckuploads/file/widokorelejupefipope.pdfIn PDF document text
- https://wurstfargo.com/wp-content/plugins/super-forms/uploads/php/files/4b3c0280096ce4861ce08b455cf6f026/nozoxokemiwixipefapuzib.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=red+cow+bar+and+grillPDF 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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000c75f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC75F	10548 bytes
SHA-256: `4f3d1c0e4b270e37f5f9696813753b1d0421e8ca9bcc501b3c86d46822cb21cf`
`font_01_sfnt_off0000df53.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDF53	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off0000f765.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF765	16904 bytes
SHA-256: `d50c4ca00509bb5124822232e4381228c1648f161836751c3c6bc62d008be76f`

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