MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF document identified as malicious by ML classifiers and ClamAV. It contains a link farm pointing to multiple compromised WordPress sites, suggesting a phishing or malware distribution attempt. The presence of external URIs and compromised CMS upload links indicates a likely attempt to redirect users to malicious content or phishing pages.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
Heuristics 6
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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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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://drafthe.ru/uplcv?utm_term=how+to+write+exponent+on+keyboard
- https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/16089e67a0fe42---32137158141.pdf
- https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/669e49e1b2b7de288b8946179d0a1847/ligodapo.pdf
- http://zulaikhatextile.com/userfiles/files/lumovegiz.pdf
- https://ruiguoex.com/upfile/files/2021/06/10/mopelufasuvufoxewaxinir.pdf
- http://hugslock.com/app/webroot/img/files/23384709885.pdf
- https://www.lowdoc-loans.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16093a67c8c1d0---86133741280.pdf
- http://chocolatycakes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082486305b49---revedowel.pdf
- https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/98ff3588ef285e7cfd1b1f76ece3d9be/tobove.pdf
- http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/b5d652cd5cdb424093cb3abb97c2fa59/xebofunoxuduxo.pdf
- https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094045614a99---dukikariralutisexevamu.pdf
- https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/8d28d285aba9ff70820db4b9c15c9813/45852291708.pdf
- http://camberwelltaxi.com/survey/userfiles/files/zolomamogunaz.pdf
- https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/f1c81ef56c5348ddbe29639681e84fb7/30009726787.pdf
- https://tamphuctriland.vn/upload/files/rumesako.pdf
- https://www.mysmilestudios.com/wp-content/plugins/super-forms/uploads/php/files/e3dc6cda96eaa47b4a69f92b0a847ba1/junezate.pdf
- http://www.pranabkumar.com/fckimages/file/32687740295.pdf
- http://ahxxzx.com/userfiles/202104/file/5174534098.pdf
- https://edu-mate.kr/_UploadFile/Images/file/pawajugetazove.pdf
- https://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/1fbun8f858l44uhbdaos22ppe0/zazopiluzekexepuwenipa.pdf
- https://zivotzaokny.eu/res/file/kirasedojikopupejavojera.pdf
- http://toyteepee.com/uploadfiles/file/210621042227287436aelc4l.pdf
- https://www.hontoys.com.au/wp-content/plugins/super-forms/uploads/php/files/ar4ro8esgbueqed9b789lori2i/refun.pdf
- https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160b08edb131a0---922602259.pdf
- http://banhangcongnghe.com/upload/FCK/file/23162689027.pdf
- 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_off0000e2e0.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE2E0 | 16792 bytes |
font_01_sfnt_off0000faf2.binf49ac7af601f139da26149cf9f6fdf78244f73d8048a4fc20a1cf4f0a11dd412 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFAF2 | 18472 bytes |
font_02_sfnt_off00012c20.binf2100b38faec16e7815d9a3bfe324dd49905d09c6bc4f4d3f3acb2f04c2eeac7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12C20 | 10696 bytes |
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