MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The presence of numerous external links, including those pointing to compromised CMS uploads and disposable hosting, indicates a link farm designed to redirect users to potentially harmful content. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall structure and heuristic firings strongly suggest a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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://knuhpharm.kr/userfiles/file/20210621130516.pdf
- https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/bjceo2gijlsinlnt4h70portk7/39404806091.pdf
- https://useoneconvo.com/wp-content/plugins/super-forms/uploads/php/files/e3e544ed3bb1611acb42c0a0c11991b4/wosogik.pdf
- https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/bd623becbc22ba4d93a8adba377e5ed7/23541529660.pdf
- https://2-view.org/home/view/public_html/ckfinder/userfiles/files/zisonibijolola.pdf
- http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/6o00qmi2tj20p4u3jpbar2o093/wizurog.pdf
- http://handbook.hu/upload/page/file/72546348534.pdf
- https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/16079559027148---81472569809.pdf
- https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/160891cbb2ba2e---3800846290.pdf
- https://tramtron.vn/uploads/files/files/37457968174.pdf
- http://boulderdivorcelaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9a12101531---79359276440.pdf
- http://zbraneklapka.cz/ckfinder/userfiles/files/16910357458.pdf
- http://belgium-ex.com/images/blog//file/dizituzebefiwafisigogoz.pdf
- https://okazionche.com/files/pimoboxagikomuditigud.pdf
- https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files//91812838278.pdf
- http://fdscience.com/UPFILE/userfiles/files/40281933520.pdf
- http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160905cfc80ee4---jerobebobari.pdf
- https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/7dd4b017e29318ce63f6a950c9e0e159/39457473032.pdf
- http://www.elitagida.com.tr/wp-content/plugins/super-forms/uploads/php/files/vj3sgegnfldahh6pmdoa2r7m40/49412720224.pdf
- http://gingerbreadvillage.org/clients/e/e3/e396b250b60561adcb946853f9f62e29/File/kekedirajajotuvawaru.pdf
- http://firmen-bekleidung.at/userfiles/file/61159544913.pdf
- https://big-cash.de/wp-content/plugins/super-forms/uploads/php/files/rsq36kl46ocne4nki96qu5npoi/56771389443.pdf
- http://alphasigmaoverseas.com/userfiles/file/70011473569.pdf
- http://mognational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160884502c51c3---xidinujezifezasetemedosi.pdf
- https://jamiatulbanat.in/wp-content/plugins/formcraft/file-upload/server/content/files/1607ab7655363b---buvegibazez.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=how+to+draw+free+fire+characters
- 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_off0000f2e2.bin3feb6869af58e4ed109570ae5c96e009668be17e392e0babb7046eaca2e6bb55 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF2E2 | 17940 bytes |
font_01_sfnt_off00012198.bin1b1bbd4e8630ce7805720769edda512c55517d6cd08204ae47722ac2ad96ea5e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12198 | 10500 bytes |
font_02_sfnt_off000139a0.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x139A0 | 16792 bytes |
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