MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file contains a large number of embedded URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the nature of the heuristics and the embedded URLs strongly suggest a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9972
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://coretry.ru/uplcv?utm_term=vendor+assessment+form+pdf
- http://wittlich-luexem.de/userfiles/file/resedazutesivukowadosu.pdf
- https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c8f7510e584---18192730235.pdf
- http://mirandatutoringcentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16082a3a78d0ae---65447576602.pdf
- http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c0e48683291---17576533933.pdf
- http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613280551fa71---42708638234.pdf
- http://studiotravenzolo.it/userfiles/files/5604108910.pdf
- http://kondicionery-dolgoprudny.ru/upload_picture/file/soxunapositejo.pdf
- http://asiavent.com/UserFiles/file///fonagotubekoxutula.pdf
- http://www.atrium-tuiles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a61e1e8d34c---mivupotadinanawiwomabo.pdf
- http://deficanderel.org/clients/6/67/674a09facce11b7629d390eef9534ff9/File/20719460940.pdf
- https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/876b986356cf4f99e4a5c2aff6b62600/narefenitog.pdf
- http://didopack.com/files/59142063159.pdf
- http://alianzablue.com/aym_image/files/sitosuxil.pdf
- http://chickenwild.com/upload/contents/images/images/81438203305.pdf
- http://dorisemitchell.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/zeleb.pdf
- http://lacasedescaraibes.fr/file/95548542168.pdf
- http://trhs64.com/clients/c/cf/cfad56e582d93fa9eda51f2516e23bdb/File/68058536707.pdf
- http://pvsystexperts.com/wp-content/plugins/super-forms/uploads/php/files/gik8u2b8l1sihg8fmtcte6f5e3/nijovawu.pdf
- http://ackerviewguesthouse.com/userfiles/file/pafogaresololujesibe.pdf
- http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160859d1b22308---jevikuworosixetopegur.pdf
- https://tkquiz.com/userfiles/file/94579627302.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_off0000e5b1.bina050582376d2b39f3d6308555ec3c549a0cc16e46f9cf39d734890cde803c8d4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE5B1 | 16408 bytes |
font_01_sfnt_off00010fa4.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10FA4 | 16792 bytes |
font_02_sfnt_off000127bb.binc875d30862cea29879ad98f135c9fbc9b8a25d6232f7b5c0ccb8e0f37adf5682 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x127BB | 10492 bytes |
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