MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The sample is a PDF document identified as malicious by ClamAV and an ML classifier. It contains a link farm hosted on compromised WordPress sites, likely intended to trick users into downloading further malicious content. The presence of multiple distinct hosts and a high number of links suggests a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9952
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF 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.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall 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.
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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe 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.
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Embedded URL info EMBEDDED_URLOne 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://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/16076948aee8ef---zegag.pdf
- https://www.popcaffe.it/wp-content/plugins/super-forms/uploads/php/files/bdd3054b9185aeb62f5fb16335227723/45467608110.pdf
- https://nevisnews.com/userfiles/nelesir.pdf
- https://phuketwebstudio.com/ckfinder/userfiles/files/57154182491.pdf
- http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9ca2b2f542---xexigifaduvoninakiros.pdf
- http://www.nowsingapore.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/1607abfe882954---44483724947.pdf
- http://vishwkarmaenterprises.com/webroot/img/userfiles/files/58460125460.pdf
- http://csc0451.com/userfiles/file/20210629072244_8o1ywy.pdf
- http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bcfc7a6b8b---5739349925.pdf
- http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/d04e81c636eff11d3a86d3337470f321/68059845149.pdf
- http://antifftech.com/uploadfile/file///2021062906403653.pdf
- https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/2dbc77d07ff4dfca38bd23a31b4ea00e/damavetezetidowisepobitow.pdf
- https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/f2993c0d8979b9866d5654438410a808/zobewuxefajizob.pdf
- http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160da4c817b726---76999097883.pdf
- http://westernmaki.com/uploads/files/37943990565.pdf
- https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/39f7ed3e4616b4d4f9a29de1c1779afd/93585116261.pdf
- https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/524c1784a9668d8cdfc3846c92d4c417/duvosala.pdf
- https://indacphuc.com/wp-content/plugins/super-forms/uploads/php/files/hsgni4qbcspfrvoau0hqisia24/40358386248.pdf
- http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5a3eedb65b---19142856491.pdf
- https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/s1bp6n556er2k77tu1tenvnc0s/xegegosukukad.pdf
- http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/16091f32504475---73164893929.pdf
- https://jiptv.nl/wp-content/plugins/super-forms/uploads/php/files/nkgh3tmiqsvp7f5096arnv2vjr/wefamevepafiwenazozula.pdf
- https://audreyheselmans.com/_files/file/sidexafaxubupufaborek.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=download+how+to+train+your+dragon+3+full+movie
- 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.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ee53.bin36f12e01b68df52853745309b38c82ea4bf83e2a6a9a9e869a7c0bf7ce2a289f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE53 | 11172 bytes |
font_01_sfnt_off00010820.binf6df422e7490843fde84cafbd81c714bb4da6fc589099f8ca8b99fb764938c41 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10820 | 16732 bytes |
font_02_sfnt_off00013399.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13399 | 16792 bytes |
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