MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It functions as a link farm, directing users to multiple URLs hosted on compromised WordPress sites. These links likely lead to phishing pages or further malware downloads, indicating a multi-stage attack. No scripts were extracted, and the document body was unreadable binary data.
Machine Learning
- Nyx PDF Classifier malicious score 0.9989
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://basyapiemlak.com/yukleme_klasoru/userfiles/file/pibiwit.pdf
- https://razdolle.by/wp-content/plugins/super-forms/uploads/php/files/21foei15mgvq280aqu59auk502/12410719760.pdf
- https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/c61779d09e8dbeefda22bdb85a35469b/suxagebebo.pdf
- https://stillwaiting.org/userfiles/file/tarofofodivuwinis.pdf
- http://sahamit.net/userfiles/file/pesusuguve.pdf
- http://flatadministration.com/uploades/fckeditorfile/vinotomosun.pdf
- https://jetaime-shop.com/files/loperiloloxemasifonub.pdf
- http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/367bbhfe7qfjrpire0vvdtva84/tuvatisege.pdf
- http://a-xian-coat.com/uploads//files/202108042105072169.pdf
- https://myupfield.link/wp-content/plugins/super-forms/uploads/php/files/eeiuqgi3jv3t3iuopb5ats46og/domeniwipumi.pdf
- http://apart1day.ru/file/67022774187.pdf
- https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/v1bbaltq1dng96v3aiij9pe91p/xopurumozirokorin.pdf
- https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608084351b38f---nekegojoxosusififiruk.pdf
- https://bursakaynak.net/userfiles/file/mofoganosijotagefimojoz.pdf
- https://abofahed.com/userfiles/file/mubukigutuxamisosaz.pdf
- http://gallery4walls.com/upload/editer/file/81163758893.pdf
- http://yngc.ru/admin/ckfinder/userfiles/files/64839541384.pdf
- http://www.urbanwaterways.info/files/70276862454.pdf
- http://a-swiss.com/upload/userfiles/file/vulis.pdf
- http://homesunshinepharma.com/upload/files/likijufudimisudubu.pdf
- http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d86b287f8c---gijanizelifisagiwunimedi.pdf
- https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb910aa399d---38427224416.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=how+to+draw+flurry+heart
- 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_off0000c530.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC530 | 16792 bytes |
font_01_sfnt_off0000dd47.binc5d44f179d84bf24fe23d689444420d8f4de2c87712ca817eb744380cbf7300a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD47 | 10376 bytes |
font_02_sfnt_off0000f4e8.binb3f17d9f1fcb9d29a1ea28472b7e4f25ae85d9bfc9b31d0caeee1a5f4c36698d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF4E8 | 18676 bytes |
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