MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, with numerous URLs pointing to various websites, many hosted on compromised WordPress installations. This pattern suggests the document is likely a lure for phishing or to distribute further malware. No scripts were extracted from this sample.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
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 https://krisoc.ru/uplcv?utm_term=left+lower+ureteric+calculus+with+mild+hydronephrosis
- https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/c3f2a8e3269de0a23ac4ad2f2058090c/37516248230.pdf
- https://www.kasekimi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070231248bd0---30397830716.pdf
- https://thewaves.net/wp-content/plugins/super-forms/uploads/php/files/f12lh3ah9c46gv33kp8u6345tc/fudilugolukidaba.pdf
- https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/34341f17af9387e9fadc9579f80c9d03/97118266748.pdf
- https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fa36638e9d---nalaxiduziravi.pdf
- http://pelesiuvalymas.lt/i/File/jusifurinotaba.pdf
- https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c62260014dd---19160671453.pdf
- http://epmachine.ru/d/files/julunoxelefotav.pdf
- https://cleaner.pl/userfiles/file/68973077039.pdf
- https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/e222b58ea7c5039718181bf7af5a8bf6/9832384457.pdf
- https://davebakeragency.com/wp-content/plugins/super-forms/uploads/php/files/d24e4849d5dffef14124005766b3e707/nozobiv.pdf
- https://laihouston.com/wp-content/plugins/super-forms/uploads/php/files/9281a487b387f846a5f15b6c5663260a/83726009610.pdf
- http://ifa-astrologie.de/userfiles/file/96860153705.pdf
- http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/1606d33e1aa851---33666608311.pdf
- https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/i80mlfi940mnchd1e26l6g4e3b/67494905444.pdf
- https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b43b2be8bce---73432920563.pdf
- http://catherine-massage.com/ckfinder/userfiles/files/66154144544.pdf
- http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609033a00f139---5135167685.pdf
- http://wang023spa.com/userfiles/202106file/2021062109430070554.pdf
- https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/67b3a99d3e58f608b12c2e5d239f377c/30277863341.pdf
- http://luxe-pools.fr/i/File/fesufoginazexazabi.pdf
- http://ever0036.com/assets/uploads/ckedit/files/20210529163018.pdf
- http://hagelkonzept.de/userfiles/file/kuxezax.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_off0000f622.binb58039c99614631b47bc658c7b7436bbd68796a938ad1a3a1be65314993e6bca |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF622 | 16936 bytes |
font_01_sfnt_off0001221f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1221F | 16792 bytes |
font_02_sfnt_off00013a36.binfc10327f9d291a630a1a9eeb5d907189bb595834ad67d88a485421fbc36b168d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13A36 | 11140 bytes |
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