MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.
Machine Learning
- Nyx PDF Classifier malicious score 0.9912
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 http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609ef2987a9ff---wobatalaripepogulobu.pdf In PDF document text
- https://ewms.vn/wp-content/plugins/super-forms/uploads/php/files/gvqtb2d412riuvn3b54guao7gn/jonevakumarevazowiti.pdfIn PDF document text
- https://soba05.org/wp-content/plugins/super-forms/uploads/php/files/edacefd12ec577b248d868ae7c2f5af4/munazavavulageludalebo.pdfIn PDF document text
- http://gearonlaw.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/39319998373.pdfIn PDF document text
- http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3786e8dadd---12103604587.pdfIn PDF document text
- https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/rjoltee7e30seirkqmtivcqh5t/dumofenejajigususite.pdfIn PDF document text
- http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c0b99551f3---fanegademenajexurovip.pdfIn PDF document text
- http://nissanotogovap.net/uploads/images/files/zurazonuwazuf.pdfIn PDF document text
- https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/67ol9qqmo3lgdkm6ougn0rin87/galejaga.pdfIn PDF document text
- https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/ee7lr7uf8faife1bdl7ab8ae21/84314926554.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8bc3a67621---butuvanabobepe.pdfIn PDF document text
- http://rungrawin-itt.com/userfiles/files/nemibareli.pdfIn PDF document text
- http://atek-ent.com/upload/file/730528298.pdfIn PDF document text
- http://martonaroniskola.net/userfiles/file/fofuniwamopijonurijegokew.pdfIn PDF document text
- https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610b8a4b7651b---92700361408.pdfIn PDF document text
- https://a2designbg.com/userfiles/file/jemavakavoxanijuzukip.pdfIn PDF document text
- http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608dd77404217---219271380.pdfIn PDF document text
- http://littlepearlspublishing.in/data/eimages/file/47316665252.pdfIn PDF document text
- http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fe57976cf8---89113269212.pdfIn PDF document text
- https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/cc837de81f61d279c4f81ea75eb2f737/99844519041.pdfIn PDF document text
- https://idd.no/ckfinder/userfiles/files/75372307735.pdfIn PDF document text
- https://tecnibat.net/uploads/archivos/62208739279.pdfIn PDF document text
- https://arerp.kr/data/file///2791899129.pdfIn PDF document text
- https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/0b18423f413508b4d9268792587e5d45/8196495443.pdfIn PDF document text
- https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ee8e698424---68795732573.pdfIn PDF document text
- http://rrarental.org/upload/file/13223388477.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=how+to+stop+cinema+hd+bufferingPDF 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_off0000f04f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF04F | 16572 bytes |
SHA-256: f5025410d3ed4cc59c6ee1e42bb31af566f1462ac585494d38c257914cf67131 |
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font_01_sfnt_off00011b87.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11B87 | 11336 bytes |
SHA-256: b75f98649fde2b09eb6fdb37f6105b97dda9a2ce50b9a197db522fd58851c861 |
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font_02_sfnt_off0001359a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1359A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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