MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The PDF structure and embedded links are consistent with phishing or malware distribution campaigns.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
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://krisoc.ru/uplcv?utm_term=chrome+turn+off+night+mode
- http://embody.box8websites.com/ckfinder/userfiles/files/sidibebonume.pdf
- http://makrostal.pl/user_images/file/15152670059.pdf
- https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a817ba3180---66997673332.pdf
- https://cottingham-group.com/cufiles/files/tumapimekezi.pdf
- https://rizecanreklam.com/images/file/11996585670.pdf
- https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/ea0dba8966e95cff1689a14ff15446e1/35635273866.pdf
- http://i-tos.com/userData/board/file/valukuxisusefijat.pdf
- http://an-ocn.ru/ckfinder/userfiles/files/28283074502.pdf
- http://galantemontagnana.it/ckfinder/userfiles/files/bowubowidamitumivapubu.pdf
- https://gamepinleri.net/calisma2/files/uploads/kinenelipuxunokemata.pdf
- http://kaus21.com/userData/board/file/dabijesezafojubelonevibib.pdf
- http://coumert.com/images/file/dubamuvanag.pdf
- https://demetraproject.eu/ckfinder/userfiles/files/mudemunujunugez.pdf
- https://dadesigning.com/daduserfiles/files/xemezajusikunono.pdf
- http://dharmapuridiocese.com/svnprojects/DHD/Source/images/files/rerudijapanon.pdf
- http://sun-apartments.pl/data/pages/90248250614.pdf
- https://fsbulletsandbrass.com/userfiles/files/3175484288.pdf
- http://phone-server.com/userfiles/file/relibujefowexago.pdf
- http://melly-incendie.fr/img_db/bemewizijiwitovataloda.pdf
- http://aaaexpressheating.com/userfiles/file/47506916510.pdf
- https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/mbr2ta2mjvaijtae16if3jv734/76924895029.pdf
- http://canadianartistic.com/userfiles/file/14645651789.pdf
- http://futureinfashion.com/ckfinder/userfiles/files/vutiz.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_off0000da05.bin87af997eeabf5e7975ed39a51e5ef582b750b331ef95f58738e161e4ccdea426 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDA05 | 18136 bytes |
font_01_sfnt_off000108a7.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x108A7 | 16792 bytes |
font_02_sfnt_off000120be.bin92483e987fde707b84d57ae159efa0e6bf982a29d6885fef514ac0cd07659e99 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x120BE | 10556 bytes |
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