MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting a link farm or phishing lure. The PDF structure and embedded links are indicative of a phishing campaign aiming to redirect users to malicious sites for further exploitation.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607fa43035749---patasujedalikikakatekasun.pdf
- http://www.alfapilates.pl/upload/file/55319174850.pdf
- https://plentis.eu/ckfinder/userfiles/files/sagokekif.pdf
- http://www.majoriscambio.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608b1c9e53e1c---fedepekizeluxawok.pdf
- https://resonanceacteurs.nl/userfiles/file/jovegisekubegupuvegaxuj.pdf
- https://alismobile.co.uk/wp-content/plugins/super-forms/uploads/php/files/415ddbb190519c92e9698222a046c5f3/74134800387.pdf
- http://ydtmuhendislik.com/ckfinder/userfiles/files/67136962219.pdf
- http://sahrugs.com/userfiles/file/55614776251.pdf
- https://gabinetpro.pl/kosmetyczka/krakow/files/poxuxuralapipapebuvujab.pdf
- http://nfc.soo.jp/file/24527417289.pdf
- https://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/v94ckc6hr5vtfkmkkoch49j6e1/sejolasikef.pdf
- https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160e176111209a---87754260937.pdf
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093ff046e687---17770504516.pdf
- http://sklepjola.pl/userfiles/file/38750033552.pdf
- https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/c792fa397b7e48c1267dcb2490909b15/zisonagawasafodiw.pdf
- http://zdravi-kromeriz.cz/files/file/96612584796.pdf
- http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be978fc1c5f---rewowuti.pdf
- https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081766439705---gomeginaposakidopotaroz.pdf
- http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/93d16e896030f0fa24a64f9ffe30306e/newokipid.pdf
- https://laser-arena.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1607d8dc210ab1---wojavoxegotekivagixa.pdf
- https://adepotcustom.com/UploadFiles/file/20210429183555195.pdf
- http://smithmaloney.com/clients/3/32/32eae1a42220421eddab78da2f55685d/File/4153020999.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=cursive+writing+practice+sheets+grade+1
- 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_off000103ea.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x103EA | 16792 bytes |
font_01_sfnt_off00011c01.bin6eddd6590e4d801f2e2f0c80cfe58710195eb81d3caea2440331085e0dee20a4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C01 | 10960 bytes |
font_02_sfnt_off00013555.bin66e6f76dfce78620d05b5f06e415a5602d306f9663ceeefe465cfc3e03cebdde |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13555 | 17340 bytes |
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