MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics suggest it functions as a link farm, directing users to various PDF files hosted on compromised WordPress sites and disposable domains, likely as part of a phishing or malware distribution scheme. The presence of embedded URLs and the 'Fake invoice / payment lure' heuristic further support this, suggesting the document's content is designed to trick users into downloading further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9747
Heuristics 8
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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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Clickable URI points to raw IP address medium PDF_URI_IP_LITERALPDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
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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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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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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://auf.vn/wp-content/plugins/super-forms/uploads/php/files/1dom54v1qb0opvptcl0ncnj374/valowozujulitiz.pdf
- https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/4491a6c8acabb33e91db8fe47e0184fc/69874809751.pdf
- http://austria-ex.com/images/blog//file/10870808838.pdf
- http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a3d539df72e---dujudivovusimovalusavo.pdf
- http://nesthomes.in/userfiles/file/larosise.pdf
- http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/d8c7v6jlr3sr8vrqs123m62a2n/kibojufi.pdf
- http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/160827fe70eea8---86858136501.pdf
- http://karmand24.ir/basefile/ehotel724ir/files/sotujibokafavosaxidoma.pdf
- http://theofficefurniturestore.com/ckfinder/userfiles/files/93317546793.pdf
- http://springswellness.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607bc571dd91d---96370538981.pdf
- http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/1608c96c3bc503---xamoseju.pdf
- https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e378cbb36a---16216042159.pdf
- http://ewhamd.net/upFiles/ckeditor/files/94366387590.pdf
- http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/160904ad9584d8---madasuzutapeb.pdf
- http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc95499ba5f---50887919131.pdf
- https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/87aafb71f5d29298cc1c72484db7799e/91866681881.pdf
- http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160730f0330818---mavud.pdf
- https://bindazzled.com.au/wp-content/plugins/super-forms/uploads/php/files/1dd983e0f10f8768fd374e29b56937a4/2441686380.pdf
- http://www.apsetedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f46ce692f9---xemode.pdf
- http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160bb683ca6099---16074397094.pdf
- https://www.beachesbrewing.com/wp-content/plugins/super-forms/uploads/php/files/ac76259b0ca647173e927a737c65c7e0/16097320043.pdf
- https://apexforestservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160877478bd1cf---67199145622.pdf
- https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160815886abc98---xubaparuxafukedumavutore.pdf
- http://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/160985219db48e---fezavujekosisonijufur.pdf
- http://schmetterlingsgaerten.de/file/2923832506.pdf
- http://duonglaohanoi.com/userfiles/file/bofuxodisuxidegusoxeben.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=2010+g37x+coupe
- 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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000177f8.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x177F8 | 16792 bytes |
font_01_sfnt_off0001900a.binfb47707016feb3bde721c1e4893037b838cab102558c57aed4cbdbc73285c0c9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1900A | 18184 bytes |
font_02_sfnt_off0001c049.binc458fec528dbb54516ccc97135b1c8c862e91814c92d220ffd5ef1668e8598fc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1C049 | 3676 bytes |
font_03_sfnt_off0001cee6.binf0c67ec082ef10f104fa9d673110250baab8fa1c696bfcf85ea4b33c943e8a2f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1CEE6 | 10400 bytes |
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