MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a link farm pointing to compromised WordPress sites, a common tactic for phishing or distributing further malware. The presence of multiple external URIs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic strongly suggest the document's purpose is to redirect users to potentially harmful external content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9993
Heuristics 7
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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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QR-code redirect lure medium SE_QR_LUREDocument instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
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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://mattstergamer.com/wp-content/plugins/super-forms/uploads/php/files/jjk27m0bjatdg6kfcfreoe6rpu/27560433523.pdf
- https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16085828c2184b---24318432756.pdf
- https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160941d14d7853---rujozexo.pdf
- http://wypelnienia.kratex.pl/wp-content/plugins/super-forms/uploads/php/files/bef7959d0b779fd1cc687a173c5838ca/jowejagibe.pdf
- http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084b17518232---nazozomuf.pdf
- http://www.altrus.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160b1e38f5a967---55107972015.pdf
- https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/v0cc289okngpv975r38dga8oo3/kukozatawukasun.pdf
- http://hnkingdee.cn/Files/file/2021526181937.pdf
- http://anhuizpyy.com/upload_fck/file/2021-5-11/20210511184858281718.pdf
- http://nationshield.ae/userfiles/files/gasomalemujexinanotubigax.pdf
- https://wecafephuket.com/wp-content/plugins/super-forms/uploads/php/files/ah43jpbj51p6p79l16hq4db2ie/virosovumove.pdf
- https://bonpetsupply.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608225276a176---90410981460.pdf
- https://estidevelopers.com/wp-content/plugins/super-forms/uploads/php/files/a69e7a89e203e8d59e89d64d10273f0a/nogetatijejibimujojubaki.pdf
- http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/a8b95deb07b90f225f7a02a769387f55/tajimel.pdf
- http://alliance-ltd.com/userfiles/xakenumuv.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=15+second+timer+with+music
- 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_off0000d5e0.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD5E0 | 16792 bytes |
font_01_sfnt_off0000edf2.bin7501e5a0e79fff48d152df28655a7f497e0e73105811867b9293ae7efedaf5d9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEDF2 | 17020 bytes |
font_02_sfnt_off00011a57.bin6ee7ffd66227107b177efe3e2f3758c61a766044e81e1e99d2624e5bce396cb3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A57 | 10700 bytes |
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