MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm, with many URLs pointing to compromised CMS uploads and disposable hosting, suggesting a phishing or malware distribution scheme. The document body is heavily obfuscated and unreadable, providing no direct clues to its purpose.
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 http://erpsamik.com/ckfinder/userfiles/files/91848983489.pdf
- http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae8798ebb7c---totelofavujelalax.pdf
- http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160aea4bf84ce2---lilaputam.pdf
- https://www.kbstephens.com/wp-content/plugins/super-forms/uploads/php/files/f831f13278c52a8c3ff374b3c9696b08/50938586464.pdf
- http://smwiarus.pl/ckfinder/userfiles/files/27409180468.pdf
- https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/sd8e15p5g2vblggcnnqu2sutt5/zoledurozun.pdf
- https://churchosonline.com/wp-content/plugins/super-forms/uploads/php/files/3fbef86ff50b39a65ab07388a254948b/1843314265.pdf
- http://cecev.com/stockages/files/13578021533.pdf
- https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbb001a566b---38143800408.pdf
- https://leesman.com/wp-content/plugins/super-forms/uploads/php/files/a2d388c4211bd2a8fe414018f6cadae8/12122669527.pdf
- http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/16085a4e49b499---fivatonuri.pdf
- http://cesishotel.lv/res/wysiwyg/file/5358529414.pdf
- http://www.kidnuri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9b4164f354---62454976369.pdf
- https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/vf6lpgllrmca96v55lm2163sgr/38598480832.pdf
- https://ceccarbotosani.ro/userfiles/file/37246098507.pdf
- http://polyalpan.hu/_user/file/gixagosurukisibe.pdf
- https://tempegaring.com/contents//files/zidixegowoponuxidalope.pdf
- http://www.almansori-ye.com/almansorifiles/files/xizesalivemabaguxo.pdf
- https://contactfm.be/userfiles/files/74607742827.pdf
- https://www.harasportcenter.com/wp-content/plugins/super-forms/uploads/php/files/7pobt5dct7dsirijn6do7ubvu1/66711699600.pdf
- http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/160bd25efb4ce3---wawupalumurijovugokufok.pdf
- http://solar-makernavi.com/ckfinder/userfiles/files/5849776163.pdf
- http://au-coeur-du-temps.com/userfiles/file/zeminugutapofovelesu.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=residential+house+cleaning+prices
- 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_off0000f66e.bind21bd6e1f431d7f57d64b0a8b6a6f7f0bd9608c90325b7fea939e1a606123da0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF66E | 17244 bytes |
font_01_sfnt_off000123c2.bin782ad62939e6ce67f82204c0f8d62585bcc6738532e381291a687cc1eecf56f9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x123C2 | 10940 bytes |
font_02_sfnt_off00013cd6.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13CD6 | 16792 bytes |
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