MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to numerous external URLs, many of which are hosted on compromised or disposable domains. The presence of PDF-specific heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' strongly suggests a phishing or malware distribution campaign. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of an attempt to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9827
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://angkortaxiservice.com/userfiles/file/wenamenilodoxexijazox.pdf
- https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/3b590de2da81e9924f885e8bb8cd4228/vazako.pdf
- http://xn----7sbqwxdbhblh2h.xn--p1ai/data/file/4981948473.pdf
- http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/1614709a406329---rufenawoneziwot.pdf
- http://awfiowv.love-mrt.com/upload/files/42438084431.pdf
- http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16133b114be797---2315941235.pdf
- http://costruzionibulagna.it/userfiles/files/milolagarasilonerusogawe.pdf
- http://tonyprins.nl/images/uploads/file/56656503353.pdf
- http://husplaza.hu/editor_up/fusub.pdf
- https://seger.cz/userfiles/file/68261977653.pdf
- https://lotusmarinevn.com/upload/files/58949210918.pdf
- https://rumusjitu.com/contents/files/ganoserimo.pdf
- http://aburobocon2019.mnb.mn/uploads/files/mexonabunu.pdf
- http://dija.lv/public/userfiles/file/gudasavatisatetafifived.pdf
- https://ost-fogging.com/upload/files/ferifulagu.pdf
- http://jl-vacuum.com/upload/files/84998859573.pdf
- http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/16149201eae1a6---45495415349.pdf
- https://churchosonline.com/wp-content/plugins/super-forms/uploads/php/files/8ad0685c4444b733f80f8dfa2e0c68d5/towinelonuvuzurafunizabu.pdf
- http://furnitura-syndicat.ru/ckeditor/ckfinder/core/connector/php/uploads/files/jodiwoliboduxigubasax.pdf
- http://maychaybocaocap.com/app/webroot/uploads/files/73013933722.pdf
- http://xn--djr00fsyfv0o5qgy9u.com/filespath/files/20210914060328.pdf
- http://autoscuolecasetta.it/userfiles/files/jufuwijokekexutisus.pdf
- http://jfac.kr/ckfinder/userfiles/files/lexurivexabupepipimekines.pdf
- https://ski-valloire.com/ckfinder/userfiles/files/sodijoraraxapaxusifode.pdf
- http://esipro.fr/userfiles/file/44236920278.pdf
- https://www.fishhabitatnetwork.com.au/application/third_party/ckfinder/userfiles/files/22898682357.pdf
- http://opt-russtd.ru/data_center/upload_pictures/file/mopasa.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=app+sure+universal+remote
- 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_off0000c51a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC51A | 16792 bytes |
font_01_sfnt_off0000dd2c.bin352792d72fa6678c2491db63b2b311875b1e6b11c1f23bf43badb128316f9c69 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD2C | 16576 bytes |
font_02_sfnt_off000107f2.bin42b12e88705fc0fedee712ff1c0a7bf1f157d14252c678815b9974ce7cb5408f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x107F2 | 10560 bytes |
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