MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. Heuristics identified it as a link farm pointing to numerous compromised WordPress sites and disposable domains, suggesting a phishing or malware distribution scheme. The embedded URLs are likely used to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9849
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 https://synerhu.ru/uplcv?utm_term=how+to+disable+the+notification+bar+in+android
- http://csc0898.com/userfiles/file/20210908175143_iuwlif.pdf
- https://digireg.org/upload/xukigokotalaxubawevoka.pdf
- http://ulsantour.com/FileData/ckfinder/files/20210909_32E3EFB7B34FC4B3.pdf
- http://ouhkpthaa.org/userfiles/kuros.pdf
- http://asu.com.vn/wp-content/plugins/super-forms/uploads/php/files/8tqcau139ll3vte1bcpnpjs6ic/vovovavunukoduginezoge.pdf
- http://angelofthewinds.net/ckfinder/userfiles/files/disudebebog.pdf
- https://grouptm2.com/contents/files/96973944751.pdf
- http://chongthamnguoc.vn/img/files/poxasofelalixudunejirofe.pdf
- https://ruh-center.ru/userfiles/file/34690316680.pdf
- https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/793e538ddead79211ed4a2d2b7be4cee/61485209075.pdf
- http://stefani.cz/fck/file/fagomuv.pdf
- https://grootformaatspandoeken.nl/userfiles/file/xumodenaxanu.pdf
- https://peterdegendt.be/file/jiwomunitujevibebuvaba.pdf
- http://ddservice-bmw.pl/userfiles/file/29366195543.pdf
- https://spazmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f58357913f---wepupuxazaguwotag.pdf
- http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141bbea6590e---fijuv.pdf
- http://kht.civilkozpont.hu/uploads/file/lawijifupunikorezu.pdf
- https://pachetedeturism.ro/images/files/26465531763.pdf
- https://vegas-shop.net/uploads/files/bakavojikalutujiwetat.pdf
- https://newegys.egyseg.eu/ckfinder/userfiles/files/15932618936.pdf
- https://vinatech.com/userfiles/file/gixupotisoduxa.pdf
- https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613db36a61491---gamojelusuwaxi.pdf
- http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141105017f1e---porajewamarativogurinopa.pdf
- http://makaroma.fr/upload/file/xuzobejoxewopokisufovo.pdf
- https://kligi.viart.lt/ckfinder/userfiles/files/fogilinamuxogegatajajaja.pdf
- http://infrabud.eu/fckpliki/file/97274621216.pdf
- http://ladna.pl/user_images/file/nidamixinenonix.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_off0000ddf2.bin3fc7b439248fa57548c41a79215ebdc6ee405cdef816706e3ca6083fef822314 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDDF2 | 21008 bytes |
font_01_sfnt_off000114b3.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x114B3 | 16792 bytes |
font_02_sfnt_off00012cca.bin3189a996d475581fdae64dafeb0fc330b84a9f2bf99946334f12bb3a67b821fe |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12CCA | 10792 bytes |
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