PDF malware analysis — malicious · 5cc9a4c9055d9e3c

MALICIOUS

PDF

98.2 KB Created: 2021-07-30 07:53:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12

MD5: a3974d015581b79d3776dc8dec633d7b SHA-1: af20d4efa43dd64936a906380d371a5649ee3f17 SHA-256: 5cc9a4c9055d9e3cb68d52cdd200577618b7d5da30c7275663b5c5f2ac10d99d

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous external URIs and link farm heuristics, indicating an attempt to redirect users to potentially malicious websites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document, potentially leveraging embedded JavaScript for redirection.

Machine Learning

Nyx PDF Classifier malicious score 0.9988

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://synerhu.ru/uplcv?utm_term=pathfinder+kingmaker+witch+guide PDF link annotation
- https://warungmimpishio.com/contents//files/8902693905.pdfIn PDF document text
- https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/1607bd18bc109a---73587164102.pdfIn PDF document text
- http://tsradviseurs.nl/mailing/images/photo/file/kunowole.pdfIn PDF document text
- http://eugensa.lt/app/webroot/uploads/userfiles/files/nulexajegurerazozafif.pdfIn PDF document text
- http://prplus4u.com/ckupload/files/22925288491.pdfIn PDF document text
- http://driver-jazda.pl/upload/file/8780463090.pdfIn PDF document text
- http://nikacarpet.com/My_Project/Hamishe_bahar/ahar_img/files/satuledisowib.pdfIn PDF document text
- https://hometeamcorp.com/images/usr/jixapuwupon.pdfIn PDF document text
- https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/8443bd7a075c5083cf71eaef839a68c9/40967227798.pdfIn PDF document text
- http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160b5aa07ae2d6---90699993183.pdfIn PDF document text
- https://www.schroedersales.com/wp-content/plugins/super-forms/uploads/php/files/3d27eb1dfff7b10ec2bd3745b6cf8788/xaduze.pdfIn PDF document text
- https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/dpe12t2dl8a39ng2e2amlcev02/95512813660.pdfIn PDF document text
- https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ede98b1df1f---20223999577.pdfIn PDF document text
- https://apsco.ly/userfiles/files/79341239655.pdfIn PDF document text
- http://red-persimmons.com/upfiles/editor/files/6922352414.pdfIn PDF document text
- http://www.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/1607aa9b88516e---33483706862.pdfIn PDF document text
- http://chiangmai-clean.com/user_img/files/meritupelufatizek.pdfIn PDF document text
- http://joshuadacosta.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090670782415---kadaneb.pdfIn PDF document text
- https://sportsht.com/userfiles/file/46124558174.pdfIn PDF document text
- http://ajtoablakcentrum.com/_user/file/81701641543.pdfIn PDF document text
- http://agiusfuneraldirectors.com/files/file/dakajugunopuponilamasedu.pdfIn PDF document text
- http://neodentpetrosino.it/userfiles/files/30164881456.pdfIn PDF document text
- https://bellevuecommunityfoodbank.org/wp-content/plugins/super-forms/uploads/php/files/4f462d5301b834e41fa9d8ddc477075b/76808761055.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_off00011449.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11449	20156 bytes
SHA-256: `797e8e9cab8f99bf4bd719bc69dd3f5f5528157c91f52a8e221a8d86fb235fff`
`font_01_sfnt_off00014871.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14871	10868 bytes
SHA-256: `84743d132082e2e785d163d6a2e3e88a0e28a07436a6947e5f74298900a806ae`
`font_02_sfnt_off00016136.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x16136	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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