PDF malware analysis — malicious · c9652cfdeed0b105

MALICIOUS

PDF

92.0 KB Created: 2021-08-24 08:00:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24

MD5: 6b890b22bf270b82746a03dfdba0630a SHA-1: 8b4ff765320d727a4d03279cefe39596871da441 SHA-256: c9652cfdeed0b105e86e7db7a08a3845aadb0d7be4dd2397393222bbb06be3e2

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links pointing to compromised CMS uploads and disposable hosting, suggesting a link farm designed to redirect users. The embedded URLs likely lead to phishing pages or further malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9979

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://irlanc.ru/uplcv?utm_term=the+art+of+communication+book+pdf PDF link annotation
- http://chretkinia.pl/userfiles/file/69846332738.pdfIn PDF document text
- https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/1607a735a7d76e---sobutogama.pdfIn PDF document text
- https://archltginc.com/wp-content/plugins/super-forms/uploads/php/files/aeae20ab04e43c83e5f58b113e768678/fatenazixexipikeburom.pdfIn PDF document text
- http://panel2conso.com/userfiles/file/92977535718.pdfIn PDF document text
- http://technestudio.eu/userfiles/files/bibidumulo.pdfIn PDF document text
- http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4b36f18622---70359600252.pdfIn PDF document text
- http://pphjako.pl/userfiles/file/37968668782.pdfIn PDF document text
- https://alakharia.com/public_html/userfiles/file/vagim.pdfIn PDF document text
- https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/f44c37e43ac257bbd3d4605fab3f9751/mabegopubeduzoda.pdfIn PDF document text
- https://ag-concept.ru/wp-content/plugins/super-forms/uploads/php/files/aac1058f018ab7989b8ff940bfca692f/wokokewilosowodoruna.pdfIn PDF document text
- http://pokeocncafe.com/uploads/files/72290135735.pdfIn PDF document text
- http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bdc9201c15---5144621773.pdfIn PDF document text
- http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/1607a94a5dc80a---xukiwijesafatinibe.pdfIn PDF document text
- http://kiszelyugyvediiroda.hu/docs/file/ravututowatebopozasewedo.pdfIn PDF document text
- http://hbleg.com/admin/userfiles/files/26891584319.pdfIn PDF document text
- http://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/16100ba49a9cd4---35956798338.pdfIn PDF document text
- https://www.alarisusallc.com/wp-content/plugins/super-forms/uploads/php/files/e78027512748493e8e3457d92acf8640/56997757100.pdfIn PDF document text
- http://fsgzb.com/upfolder/e/files/20210822084637.pdfIn PDF document text
- https://niboparis.com/upload/fckeditor/file/1628552863_1.pdfIn PDF document text
- https://npkfertilizerproduction.com/d/files/gomigelidujubibinem.pdfIn PDF document text
- https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/851e14812971ab44d74e955e390f7fbf/xepeloxemunezi.pdfIn PDF document text
- http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160a4098b5f7fe---84972506003.pdfIn PDF document text
- http://alpanelektrik.com/depo/sayfaresim/file/70974736657.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_off0000ff98.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFF98	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off000117aa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x117AA	17960 bytes
SHA-256: `a628918ab5cf45a41bd21fa5b654a3a051de156d536b26843478621bbc14af8f`
`font_02_sfnt_off00014662.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14662	10964 bytes
SHA-256: `051257d8504737dad85bc383654e80d9ee7fb9e347c9414e7d83e1f27dc63d12`

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