MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. Heuristics reveal it functions as a link farm, with numerous URLs pointing to potentially compromised or disposable hosting, suggesting a phishing or malware distribution scheme. The presence of external URIs and link farm indicators strongly supports this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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://www.consorcio.edu.pe/wp-content/plugins/formcraft/file-upload/server/content/files/161465993db962---xofenivu.pdf
- http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/8l5e5bhe3ihopsa4spajlm85j5/tibuvuniga.pdf
- http://zovsh.com/Uploadfiles/files/melinir.pdf
- https://egc.ecrom.work/syo/files/25253950304.pdf
- http://gonganmi.com/userfiles/file/40028108386.pdf
- https://www.colline-eternelle.com/ckfinder/userfiles/files/68613207674.pdf
- http://beta-rc.com/upload/files/64968740151.pdf
- http://xaydungphongphu.com/uploads/files/zuzututejepikusomesidi.pdf
- http://ambvetesopo.eu/userfiles/files/tudad.pdf
- http://tavio.su/files/file/sexedawawikibatu.pdf
- http://oodow.cn/upload/file/210911214639151597gbfg7jzupti9.pdf
- https://ag-concept.ru/wp-content/plugins/super-forms/uploads/php/files/24f5768a482e01ab041b7ea2cae487fd/xuzuredulijexajuve.pdf
- http://okna-kurska.ru/page_edit/_samples/userfiles/files/60454522336.pdf
- https://www.studioline.ie/ckfinder/userfiles/files/tilibizawegukogefufaned.pdf
- https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/tq4710knlu4j6f9cgo1im06dt7/nosijujejezawobagufan.pdf
- http://thankschicken.com/uploads/files/59270073618.pdf
- http://xn----ctbguteehkho5h.xn--p1ai/ckfinder/userfiles/files/52292150666.pdf
- http://transcash.com/ci/userfiles/files/79676595925.pdf
- https://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/5472bccaf04d5e86db8550361d7bcb15/64549120399.pdf
- http://aven.su/userfiles/file/61154109018.pdf
- http://itkaufmann.com/images/fckimages/file/bakilijusu.pdf
- http://skupka23.ru/upload/m/91923246899.pdf
- http://pretaporter-pegah.com/userfiles/file/9343625423.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=smith+organic+chemistry+5th+edition+solution+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_off0000bc3b.bin2c2fade18b4b7568aa3818d7b1cdf1c18ff8a98f9bfb8e8e89d6733d91a06b01 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBC3B | 11492 bytes |
font_01_sfnt_off0000d714.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD714 | 16792 bytes |
font_02_sfnt_off0000ef26.bin5e0b86e61f3a0d9eb515d198f98b0994817a8b7f498f6610c04f0d8f73185f56 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF26 | 17344 bytes |
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