MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous external URIs and links to compromised CMS upload storage, suggesting it functions as a link farm to distribute further malicious content or phish users. The document body is unreadable, but the heuristics and URLs strongly point towards a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
Heuristics 6
-
ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
-
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.
-
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.
-
External URI info PDF_URIPDF contains an external URL action
-
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.
-
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://infrive.ru/uplcv?utm_term=book+of+calculus+pdf
- https://centar-znr-zop.hr/wp-content/plugins/formcraft/file-upload/server/content/files/161311fdf5b5eb---57970106304.pdf
- http://youandisagenix.com/ckfinder/userfiles/files/tizifopum.pdf
- http://phanmemerp.vn/attachment/files/vujuxezivolarugekomav.pdf
- http://www.fred-robin.com/ckfinder/userfiles/files/95048242876.pdf
- http://kuhomania.ru/ckfinder/userfiles/files/putakukodixitexo.pdf
- https://vokalensemble-vocembalo.ch/userfiles/file/kixole.pdf
- https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/g6hl1nnkdn4lptsjr6hffvrof1/tovulokesimedem.pdf
- https://morganmethod.com/ci/userfiles/files/27035479656.pdf
- https://pharmnet.cz/ckfiles/files/files/76486671729.pdf
- http://www.iciparis.ru/ckfinder/userfiles/files/19824576604.pdf
- http://shijijiaming.cn/filespath/files/20210930161953.pdf
- http://mrukseo.pl/userfiles/file/dewesivusunuriwisefe.pdf
- http://runhouchem.com/upload/files/43168317140.pdf
- http://hongshengfish.com/uploadfiles/20210928/2109281352507707798etigkbgnsg1.pdf
- https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/il61has4a1h6a6mkiq5dbq1qrs/pagoju.pdf
- http://delfosventures.eu/userfiles/files/83427276680.pdf
- http://www.hgbehringer.de/img/files/files/sodudujisawifepirup.pdf
- http://nnk.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1613757c326609---13311177241.pdf
- https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/e2d80e90f8b1764fda0612c761457d86/remopixomodiligebubo.pdf
- https://raljob.com/userfiles/file/dowobibumifuguvu.pdf
- https://groupunsur1.com/contents/files/dewaso.pdf
- http://erdbau-rauch.at/womurerewuzonekupod.pdf
- http://parmalab.it/userfiles/files/98421281254.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_off0000ae7e.bin8eee5764a014f7f3c534839adb9216cd0417d10e790dee9c9aba6d238d317bba |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAE7E | 10332 bytes |
font_01_sfnt_off0000c5fd.binafb545337007588424c67abdcbcc79f94e5dfdb1913b8f25b261151b017c9f31 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC5FD | 15584 bytes |
font_02_sfnt_off0000ee05.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE05 | 16792 bytes |
Open this report in the interactive analyzer, or submit your own file for analysis.