MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous links pointing to compromised WordPress sites and other disposable hosting, suggesting a link farm designed to distribute further malicious content. The presence of external URIs and link farms strongly indicates a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9992
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://www.gcsystem.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160ac6a180f570---jodadavozurilazebigisijem.pdf
- http://dzbnf.com/upload/file///16362241163.pdf
- http://www.associatedomains.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608dd5c8114be---11525710601.pdf
- http://dansecyr.ca/pdf/file/xiriwiworudotesuxodusoku.pdf
- http://makingtheturngolf.com/clients/9/92/925d9bae4ecf380f28dbe0e1390c16eb/File/lawunoramomima.pdf
- http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ae6c86d51a---luwivezumifilaxate.pdf
- https://www.sixteengrams.com/wp-content/plugins/super-forms/uploads/php/files/5n1q6nfoe276lsbt3a8ceii9pd/jogofuge.pdf
- https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609734bf24ddf---bekuwa.pdf
- http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e0c155583d---mosegifufidalazo.pdf
- http://rc-modeller.se/images/file///18079193822.pdf
- https://biogenetixpharma.com/ci/userfiles/files/76780533211.pdf
- http://savaksangida.com/resimler/files/felelurumavesenurorurepo.pdf
- https://calmoinc.com/upload/editor/file/13421237580.pdf
- http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a02f537aeae---luxunixivijijofamuluxaki.pdf
- https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/vsf8jtefgop65hj6gscjak88g2/mofazutuwajuxixojof.pdf
- http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/160dbd0fea1f7a---sozubadovek.pdf
- http://lignumweb.com/site/webroot/uploads/files/taxebu.pdf
- http://gangwonbnb.com/FileData/ckfinder/files/20210603_EC972990AECF4CCE.pdf
- https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/ce24927836ba02ec801574e9eb5231be/fetodimovezul.pdf
- https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b99f7906429---15766518555.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=gate+2020+chemical+engineering+paper+solution
- 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_off0000ed39.bin2439505e3b679dd2251d3bf17d162d2e8d1b12e711d574f30a8dc356ffd01ef5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED39 | 17468 bytes |
font_01_sfnt_off00011b29.binb7f1a0a3413cb7e224b4e27a44b167a9ee17c86bf4cd18e2375ee2d8b8cc3dc5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11B29 | 11204 bytes |
font_02_sfnt_off00013545.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13545 | 16792 bytes |
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