MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It functions as a link farm, containing numerous URLs that point to compromised WordPress upload directories. These links likely serve as a distribution mechanism for further malicious payloads, aligning with a spearphishing attachment attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9928
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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 http://elonsummerstorage.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd97389c4b0---barusuzivunivoruwenu.pdf
- https://www.lightingsolutionsal.com/wp-content/plugins/super-forms/uploads/php/files/1d32bd785bd21f3f9dd9cf52d050c4f6/88321003189.pdf
- http://orvosvalaszto.hu/uploads/files/suluzimimifobabovugojeke.pdf
- https://anzmrrn.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607cdd0987bf3---5754431284.pdf
- http://toptoptraining.ru/img/upload/file/4330544745.pdf
- http://cainghienbinhduong.com/uploads/userfiles/file/82183290287.pdf
- https://cdpu.net/wp-content/plugins/super-forms/uploads/php/files/c1fe784eb8079338ca567021c0c90e2b/8235080518.pdf
- https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/5eacc56765e6c09b1a63a525ba2a1754/33407824976.pdf
- http://axwelindia.com/uploads/xepomizu.pdf
- https://velvetskin.pl/wp-content/plugins/super-forms/uploads/php/files/c5024427cd37d4012f0798a192e00872/94761043182.pdf
- https://theemperorsoldclothes.co.uk/wp-content/plugins/super-forms/uploads/php/files/6v86lo3me1bq9vpp4kmr9b2v05/2201910922.pdf
- http://olgapolyakova.com/files/files/98702268089.pdf
- http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ade256b3724---79213411577.pdf
- http://quangphong.vn/uploads/image/files/tagewasisivimo.pdf
- https://walkandsmile.com/userfiles/file/logavepalise.pdf
- https://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/kgg96pv3c2jmvu746kipr78e9b/gisuminu.pdf
- https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/u1a3ovfuqpuva4loda1pah4mro/nasufepokirejikokujo.pdf
- http://ctkupavna.ru/upload/file/nunedorelalevofab.pdf
- https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/752b39a8471ea20ff01b5064cd4a7068/16200764952.pdf
- https://agrachoff.ru/wp-content/plugins/super-forms/uploads/php/files/48652bc033cffa301690c81165ffb80b/643335350.pdf
- http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608bd61914712---zavadodijo.pdf
- http://vimbark.sk/editor_uploads/files/nivasesuruvanadakaxo.pdf
- http://www.grundys.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160764ce852afc---36036002625.pdf
- http://thietbixanh.net/uploads/files/18744328830.pdf
- https://big-cash.de/wp-content/plugins/super-forms/uploads/php/files/kfltg1s7pn4e4ene4mvneocv51/nuwof.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=polyvalente+in+english
- 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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ccd9.binc8b201df8cd81d837d7de2e0aba6aca22c7bb7920b77698c5126d59bc3d40c06 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCCD9 | 10468 bytes |
font_01_sfnt_off0000e496.binb337caa5173463928754652904a7a8a98f1b0906da411461fdfa58a4b1f722a6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE496 | 2384 bytes |
font_02_sfnt_off0000eee1.bin4538b8e9e64deee4117c035bf460c413dd4ae735f0032231f11500a387a6579a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEEE1 | 23292 bytes |
font_03_sfnt_off000126b4.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x126B4 | 16792 bytes |
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