PDF malware analysis — malicious · 022b3f3b7a417b18

MALICIOUS

PDF

83.2 KB Created: 2021-09-19 05:32:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23

MD5: 2280271f9c35acb8173520f655d82f82 SHA-1: 2c8cf7f5bb96549139ae492ccf88fab6e18b5c8a SHA-256: 022b3f3b7a417b180021982f13f482ce63382cc44c167bfbff2f2fb40d9b6ac6

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous external links, many pointing to compromised CMS upload storage or disposable hosting, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of malicious redirection tactics.

Machine Learning

Nyx PDF Classifier malicious score 0.9951

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://allytemp.ru/uplcv?utm_term=buy+100k+ig+followers PDF link annotation
- http://ysenb.kr/board/file/editor/file/zewul.pdfIn PDF document text
- https://clinicaabrahaoosta.com.br/ckfinder/userfiles/files/76191659885.pdfIn PDF document text
- http://gzmzwl.com/Uploadfiles/files/50578345221.pdfIn PDF document text
- https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/16138d268e70a3---nufapotirana.pdfIn PDF document text
- https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/8df6a9a56e2ee811b569378317d0e228/salafared.pdfIn PDF document text
- https://olterus.info/contents/files/xinugezuzubokus.pdfIn PDF document text
- http://skyrybupaslaugos.lt/uploads/files/7349103819.pdfIn PDF document text
- http://kbidc.kr/upload/editor/file/1630782107.pdfIn PDF document text
- https://snowcat.pl/admin/ckfinder/userfiles/files/nulodinufifek.pdfIn PDF document text
- http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161423b9c96bed---wolibaropofuwamati.pdfIn PDF document text
- https://turkeyinsurance.info/images/file/xesetuwosuge.pdfIn PDF document text
- https://www.nstoplana.rs/ckfinder/userfiles/files/99221530311.pdfIn PDF document text
- https://ewastexperts.com/userfiles/files/niwasiwijanowazega.pdfIn PDF document text
- https://abcelectricalonlineshop.brilliantwebtech.com/userfiles/files/5533038588.pdfIn PDF document text
- https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/b6395461a9722beb5902b186b2161782/jiweraxudosiboxo.pdfIn PDF document text
- http://henca.com/files/details/file/gonena.pdfIn PDF document text
- https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/cd288ad0674fd041a0ac43c9fd9da95a/gugukagexisepemavetodazog.pdfIn PDF document text
- http://ahrestygz.com/userfiles/files/20210916_085423.pdfIn PDF document text
- http://abwrosedale.com/uploads/files/febafexusifajofukevugese.pdfIn PDF document text
- http://stkvn.ru/wp-content/plugins/super-forms/uploads/php/files/552c1b124791e1b3a45edead4ea40b08/wabivexibolexivinemaj.pdfIn PDF document text
- https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161447c66973a2---66403571642.pdfIn PDF document text
- https://piataafacerilor.ro/app/webroot/files/userfiles/files/zukigezurorekidusexa.pdfIn PDF document text
- http://cesarrodarte.com/userfiles/file/3886824505.pdfIn PDF document text
- http://vaithun.net/upload/files/20589111132.pdfIn PDF document text
- http://pdww.ru/ckfinder/userfiles/files/63718349692.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_off0000dee6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDEE6	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000f6fd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF6FD	10644 bytes
SHA-256: `fb14e5a089171069d22db9960e3a8f0aba29a5513cef8443735dd85710dd0ea5`
`font_02_sfnt_off00010fa0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10FA0	18236 bytes
SHA-256: `2f9b9bd72ff6e8147c8de4ddcfdef6a43d02ec07b3e92b4f0e3db2a17aa0c8f1`

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