MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of 'utm_term' parameters in some URLs indicates an attempt at tracking or obfuscation for SEO-based lures.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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://smidgel.ru/uplcv?utm_term=how+to+do+a+compound+interest+calculation+on+excel
- https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/e0244c45d3ed92a7cb0be39f90dcd3e1/sivatukekabuletaromap.pdf
- https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c41cf008256---wuretakofunataxamezugap.pdf
- https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/7bb7df2e6c8abe76e0295188d0fe281f/wekevirijoxajexegik.pdf
- https://heatingboiler.ca/fck_upload/file/rojaxasorukakumomi.pdf
- http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1610cd004e6397---76037989602.pdf
- http://aucoindeshalles.fr/menu/file/58944359765.pdf
- http://apisicul.com/userfiles/files/79390925533.pdf
- http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c009fb271c0---varutuwivuloviwu.pdf
- http://xn--939a66v0zjo3bcvdmrp.com/data/ckfinder/files/55319523382.pdf
- http://kahasat.cz/data/file/vubomazavunop.pdf
- http://chinalabware.ru/d/files/82937313437.pdf
- https://cbdc.co/uploads/ckfinder/userfiles/files/62946976362.pdf
- https://pointsourcegroup.com/wp-content/plugins/super-forms/uploads/php/files/a276b1fc9d5d5b4986f2a9852cd46bf8/1952135464.pdf
- https://mtmnetwork.net/uploadEditor/files/kolosutitebugenejuki.pdf
- http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aff88c17541---tirolozizulogoradusateg.pdf
- http://kolasinprevoz.rs/slike/files/91219659747.pdf
- https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/556053da99f396dc72d13272a8c92112/bodugifatef.pdf
- https://northstarexecutivesearch.com/wp-content/plugins/super-forms/uploads/php/files/094f2a8cf5e26494497ce450def695db/vufujuzaxupufofo.pdf
- http://kursadowicz.pl/Upload/file/sewotuv.pdf
- https://businesslife.com/content/files/25508527137.pdf
- http://learningkey.org/userfiles/tibovipebanefa.pdf
- https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/081vqhgjb1rg4b7p7nduuv8pn0/wanivujanevepix.pdf
- http://www.contal-farmer.com/uploads/files/napokawaximabuvodelo.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_off0000dcf7.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDCF7 | 16792 bytes |
font_01_sfnt_off0000f509.bina73d38d300c29829828277546218961029bd479244605bba11fe1cdc42c8bbfc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF509 | 17024 bytes |
font_02_sfnt_off0001215c.bin4317ee221b1cba038c3baf68fd20d262375c8cc1010aeb4a0d79733b2a5acc94 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1215C | 10952 bytes |
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