MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file is identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains numerous URLs, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and the nature of the heuristics indicate this PDF is likely part of a phishing campaign, potentially leading to further malware downloads or credential harvesting.
Machine Learning
- Nyx PDF Classifier malicious score 0.9937
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://krisoc.ru/uplcv?utm_term=kirkpatrick%27s+four+levels+of+training+evaluation+pdf
- http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/160bd79820a5bb---69955198493.pdf
- https://actorconseil.com/files/file/rasasixek.pdf
- http://chatfieldfarms101.com/userimages/suripelikorali.pdf
- https://soechi.net/userfiles/file/68142225171.pdf
- https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/1f32a5aa3a922ed018f3485731830fa0/kadalufonetodebamafefim.pdf
- http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c11df47cbc0---rowutitu.pdf
- https://yingzhaoliuart.com/upload/file/solowa.pdf
- https://floorco.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/da4f40467cf2b1006d3eb54501e2ba59/fufovuwapagigasawibabudu.pdf
- http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dc16061132d---62276551733.pdf
- http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d5dbb944372---jifaruroz.pdf
- http://www.lifestaralberta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1ae1a84a11---litut.pdf
- https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/1629a9bfa9c13132c103291de748414c/33886956073.pdf
- https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/3328e533322d0e8717ef0d7cd58d08c6/98766931937.pdf
- https://abeess.com/userfiles/file/55236402246.pdf
- http://www.ambredore.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075da0bd64ff---mokewikanupapisivekodegow.pdf
- https://sellos-mecanicos.com/wp-content/plugins/super-forms/uploads/php/files/8bbd617c0738d0f46f0fe2327b855974/jekepabukikanituvapev.pdf
- https://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/570da50a1e6737e79efee1d3272133a4/4021755869.pdf
- http://xn--80aaffebba2apgigwiiececnggk9e4k.xn--p1ai/pict/file/10515468237.pdf
- https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/9946u2oqcle93af8r0tsu1gnl2/54830386436.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160735956eb178---fokovepalanovokifisuwer.pdf
- http://cesnek-vysocina.cz/UserFiles/File/vewebevedu.pdf
- http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608837a67da37---70442337423.pdf
- http://pwr-tech.ru/userfiles/file/52507908087.pdf
- http://coimbra.hu/uploads/ckfinder/userfiles/files/94903779464.pdf
- http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fd8561225e---20221257086.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_off0000fdcc.binbe65abad07d496831cfed809621bdaa50a78d7d0e599bcbd0035447cca2a3c45 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFDCC | 11076 bytes |
font_01_sfnt_off000117a0.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x117A0 | 16792 bytes |
font_02_sfnt_off00012fb2.bin51e76bfbef72be1ba7e26dcbbc638b61afb9a486613e3944b55297275dc8b12c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12FB2 | 17292 bytes |
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