MALICIOUS
164
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 phishing or malware distribution attempt. It contains an embedded JavaScript stream and numerous external URIs, many of which point to compromised CMS uploads or disposable hosting, forming a link farm. The primary purpose appears to be redirecting users to external sites, likely to harvest credentials or deliver further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9802
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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://medvor.ru/uplcv?utm_term=meaning+of+physico
- http://short-story.ru/upload/file/74341591427.pdf
- http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/160b770d11812f---76633626266.pdf
- http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1607219c7879d4---95540218055.pdf
- http://dichvu12h.net/userfiles/file/93708042422.pdf
- https://empylean.com/wp-content/plugins/super-forms/uploads/php/files/i9llruhapgubu72vupnr8ccftd/vufafajiwalawoxusibapuni.pdf
- http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/16090f2429ebb2---85658710685.pdf
- http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/80765b32fb40cc987653ba089076e8da/16658364274.pdf
- http://reelproductionshd.com/userfiles/file/60607835565.pdf
- http://staractivecollection.com/resimler/site/files/84567525066.pdf
- http://caphegiabao.com/upload/fck/file/tobovijesadupunebuve.pdf
- http://eros-arena-reutlingen.de/eros/userfiles/file/28311869350.pdf
- https://handinhand-daycare.com/ckfinder/userfiles/files/zasubuvone.pdf
- https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609eb2c31d7f5---67986244878.pdf
- http://uci.ir/userfiles/file/46269636727.pdf
- http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609b2637ac008---vowuv.pdf
- https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/vn9113sg410t1qjrtm5v3so0k3/tipudobofu.pdf
- http://marymo.ru/uploads/files/fepemanosegafemifu.pdf
- http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cad97210ad---47306788325.pdf
- http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1609ea0853c98d---74782131865.pdf
- http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160727f540a298---tukaxorusagefunenumen.pdf
- https://najlepsze-w-polsce.pl/uploads/gemuraposur.pdf
- http://maduraicaterers.com/app/webroot/js/ckfinder/userfiles/files/wanexudi.pdf
- http://sun-tes.ru/files/file/bafozul.pdf
- https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16093aa560ccfe---86662256213.pdf
- https://sckstone.com/wp-content/plugins/super-forms/uploads/php/files/44235709abe3a2db212389814058761e/zetoboniruporoj.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 5
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
stream_006_off000158d0.bind9f5e66163d907df9b2c2f031b8906ab183602eda4757f3e8ef428a9cf922d60 |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x158D0 | 18328 bytes |
font_00_sfnt_off0000e072.bin71ef7d8a314ce169737cd727f220a62d100ea0627d446c212edd685bef9f7052 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE072 | 10620 bytes |
font_01_sfnt_off0000f8a7.bina8161c2f5ba9235eb51b4fcc43b6bb219725019365cb8d38f9ec25dfe5ce54ff |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF8A7 | 3464 bytes |
font_02_sfnt_off00010626.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10626 | 16792 bytes |
font_03_sfnt_off00011e38.bind4a7dad82d1d279fe64717dde6a89c1b29f03c4cc84180c5abc570814bbc8bb8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E38 | 23740 bytes |
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