PDF malware analysis — malicious · 4507708eda56f9da

MALICIOUS

PDF

86.8 KB Created: 2021-06-30 20:30:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14

MD5: 5465b79207c93bb20fed790cca2b7c32 SHA-1: 8304df2124588f276202f974a88c86b853cfcac2 SHA-256: 4507708eda56f9da164d6a658f0d44e3542d3d6041a5d0519c4d807119fd4aa3

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites utilizing the 'formcraft' plugin for file uploads. These URLs are structured as a link farm, suggesting an attempt to lure users to malicious or phishing websites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9947

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 http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/160ac454d23a83---37177250292.pdf In PDF document text
- http://zeroseistudio.eu/userfiles/files/6979469674.pdfIn PDF document text
- http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a510bd9e613---vagogozedidalalidu.pdfIn PDF document text
- http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b6ff807f85---raranole.pdfIn PDF document text
- https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160d541910013c---7596315171.pdfIn PDF document text
- https://gifarlcm.com/upfiles/editor/files/25347575685.pdfIn PDF document text
- https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/0cbb23a88e75bb35a3946d60abb28b15/lujixuvizutitej.pdfIn PDF document text
- https://movesforfree.com/wp-content/plugins/super-forms/uploads/php/files/qtphais2ko3f7gdrq8reug5aj3/7998335528.pdfIn PDF document text
- http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/146df7ec0c0c1905b5de8baaea35dd0a/tugesaveguzanem.pdfIn PDF document text
- http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cdbc4a69ca---64855324157.pdfIn PDF document text
- http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606f4cb0c3bf2---39819391014.pdfIn PDF document text
- http://waterreducer.cn/d/files/welakaxo.pdfIn PDF document text
- http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607d4b400d8a0---buwiga.pdfIn PDF document text
- http://geombiagioschettino.eu/userfiles/files/nirujitud.pdfIn PDF document text
- https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/i9ban17fk94emog2bj63rp5tdh/6743260035.pdfIn PDF document text
- https://forex-robo.org/wp-content/plugins/super-forms/uploads/php/files/19c7304b367c467556f159cc953d21bc/rufuwarok.pdfIn PDF document text
- http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cb0e323909---28265756667.pdfIn PDF document text
- https://funkydrop.shop/wp-content/plugins/super-forms/uploads/php/files/fda0276403bbffa86beae8c7454be5fe/meredagovijenupawuwenosaw.pdfIn PDF document text
- https://asiaviews.org/wp-content/plugins/super-forms/uploads/php/files/03mda361lubugb0eeudv4g1jo5/tefatakuxoxe.pdfIn PDF document text
- https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8e0547ea8---safixej.pdfIn PDF document text
- https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/f50132e21ebb8bcbcb934062f0fdd7c2/xizusuropiraledokof.pdfIn PDF document text
- http://e-pisanie-prac.pl/famprojekt_z_serwera/images/file/76570425206.pdfIn PDF document text
- https://topjobsnepal.com/ckfinder/userfiles/files/jufamamilixiruxusapedef.pdfIn PDF document text
- http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a00e133a4c---nagodojit.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=mary+berry+buttercream+icingPDF link annotation
- 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_off0000ef5f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEF5F	10584 bytes
SHA-256: `e046cc5ac9e096918ffa688fb9f60b6d28bfd9eaa73ac3b1d3a850cf9bad64ef`
`font_01_sfnt_off00010796.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10796	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00011fa8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11FA8	17216 bytes
SHA-256: `ae5a5bcdc982703fe0b53dfb235df9ce9b6bc1036e4e7e2d10114055bca566db`

Open this report in the interactive analyzer, or submit your own file for analysis.