PDF malware analysis — malicious · ed0dfb700db2efe8

MALICIOUS

PDF

83.4 KB Created: 2021-08-06 12:22:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26

MD5: 5c38a8668d1567d59f5a4afb7be13b9f SHA-1: 030c3aa7be4dc44ebf169099d35e6413aa6ad059 SHA-256: ed0dfb700db2efe8f4036c9fc3ba46cf28ae1d1ffda144aa9371e3773e28f66c

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a ClamAV detection for 'Pdf.Phishing.Trojan'. The file contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting it functions as a link farm to distribute phishing content or further malware. No scripts were extracted, but the presence of embedded URLs and the link farm structure strongly indicate a phishing or malicious redirection attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9974

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV 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_FARM

PDF 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_FARM

Small 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_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The 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_URL

One 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://crysiq.ru/uplcv?utm_term=jevity+1.5+cal+nutrition+information PDF link annotation
- http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16082b91e2dbc6---7304100658.pdfIn PDF document text
- http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/17f9e81224b7a3337e1d5e1790d94784/70159597396.pdfIn PDF document text
- http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1607f5de1a4a79---22293025956.pdfIn PDF document text
- https://studio45.live/wp-content/plugins/super-forms/uploads/php/files/kfrtsr7s57kon4t0j6ignofoej/79826473899.pdfIn PDF document text
- https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/bd032fb005e7f13be5d1998e6ed845dc/burexufolufokejot.pdfIn PDF document text
- https://chp-travel.ir/data/file/mozizidiboda.pdfIn PDF document text
- http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160a93e6759bb7---dolaripuweritog.pdfIn PDF document text
- http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1608c8577408b6---bijubezedufuladizulezesop.pdfIn PDF document text
- http://sklepjola.pl/userfiles/file/kunosukegudiwiwepexepota.pdfIn PDF document text
- https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/5pg1v8ddnkve2omtfpnr9luen5/fotimumasojev.pdfIn PDF document text
- https://jaunimodienos.lt/wp-content/plugins/super-forms/uploads/php/files/t593pnn66becmcuqk5thhs2dth/6682324381.pdfIn PDF document text
- https://annekienlen.fr/imagesfile/29119027018.pdfIn PDF document text
- http://creptiles.dk/userfiles/file/81302996383.pdfIn PDF document text
- http://studiotecnicodama.it/userfiles/files/37323283083.pdfIn PDF document text
- https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/a0phleredohii8nvli69rs41eb/varowigefetewigivivepowu.pdfIn PDF document text
- https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/dktvnun0jmpabeoicpppkie951/wolesesolarojoxibotetiw.pdfIn PDF document text
- http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ac0d87b507---72409757111.pdfIn PDF document text
- http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/14ca8569c861f85ffc7ca404cb572b8c/fuzozeluxogujabonafosini.pdfIn PDF document text
- http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c492a57f77c---gizajawerefusomot.pdfIn PDF document text
- http://vector-mebel.ru/uploads/files/zegetuleliwupun.pdfIn PDF document text
- https://wurstfargo.com/wp-content/plugins/super-forms/uploads/php/files/2ce2b98ccf7be68e04af5e57458bf401/nekixasubavoso.pdfIn PDF document text
- https://avantkart.com/wp-content/plugins/super-forms/uploads/php/files/86fdeeru05vnh4pvslr07rhd8j/kukewizopelovut.pdfIn PDF document text
- http://111-orte.de/testarea/cwsCMSlight/media/files/52195463039.pdfIn PDF document text
- https://www.oasipizza.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a5688c54c0e---4175802738.pdfIn PDF document text
- http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c219cc65e01---99354698552.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000df48.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDF48	10852 bytes
SHA-256: `d39b45b4aa8528eb614d1e6398c0f5d396fabb876dc4a1935e1efe2c206380d0`
`font_01_sfnt_off0000f872.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF872	17888 bytes
SHA-256: `64edd87d3301c4bf6a34562ac10dc5ea85379ed29063621007126d89ab9e152d`
`font_02_sfnt_off000127ed.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x127ED	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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