MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous external URIs and link farm heuristics, indicating a phishing or redirection scheme. ClamAV and ML classifiers strongly suggest malicious intent, specifically identified as a phishing trojan. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics point towards a phishing attack leveraging external resources.
Machine Learning
- Nyx PDF Classifier malicious score 0.9964
Heuristics 6
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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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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://inwebjor.ru/uplcv?utm_term=how+to+perfectly+peel+a+hard+boiled+egg
- http://myappartement.de/web/editor/files/46960665680.pdf
- https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/05385c8d1cfcfbc8efa8c840378cbda3/koxibitabaxekopikekokiti.pdf
- http://abwvictory.com/uploads/files/5390542074.pdf
- http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/19q5km0a2flcn9ou2msoi4lko0/15957153163.pdf
- http://www.ecvbrass.ch/user/web/file/neneraz.pdf
- http://nationshield.ae/userfiles/files/futukowe.pdf
- https://dewalt-naradi.cz/media/upload/editor/file/55459507527.pdf
- https://www.costaverde.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607234d0d827b---nalukovalo.pdf
- https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608a2b9fa740f---69175379693.pdf
- http://sun-green.be/ckfinder/userfiles/files/65482102381.pdf
- https://www.tctnanotech.com/wp-content/plugins/super-forms/uploads/php/files/678d41a7205f29950ec248b52d98f7f1/nipovudipeduxiko.pdf
- https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3b0e5baf7a---69061615231.pdf
- https://cubic.is/userfiles/file/2828560896.pdf
- http://ipublicity.cz/data/file/jetolivejowadubupurap.pdf
- https://big-cash.de/wp-content/plugins/super-forms/uploads/php/files/0g54crihthq47mi130vkp8fqmt/3984589285.pdf
- https://cottonweb.net/userfiles/file/dekugopolibajewele.pdf
- https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a31718d2049---71526599527.pdf
- http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a7b36965125---26067388159.pdf
- https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160bacdfa37653---49266562486.pdf
- https://baatco.com/ckfinder/userfiles/files/baxapa.pdf
- http://21cedu.com/pds/userfiles/files/jijelagosax.pdf
- http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a58cd73a375---dagibopikoz.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_off0000f580.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF580 | 16792 bytes |
font_01_sfnt_off00010d97.bindc938a1a98defaed2fbcc79818c022f64ce1eeecfff5123dda583c8a7a808bdb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D97 | 10956 bytes |
font_02_sfnt_off000126b9.bin2e9bac921e4c531285ffdbc682d1eeb1c298a62a57ce8a77490034f35865838d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x126B9 | 17128 bytes |
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