PDF malware analysis — malicious · 3adf32e50d63fafd

MALICIOUS

PDF

86.0 KB Created: 2021-07-17 01:20:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23

MD5: b568b77138ecdc0adf72db3e0383386d SHA-1: 93ea73f0a89da05ea11419d0588b46941815b175 SHA-256: 3adf32e50d63fafd672251d07c1000f0b98cacee69ff17eed1d1a4e6afd36cb8

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links pointing to compromised WordPress sites, suggesting a link farm designed to distribute malicious content or lead to phishing attempts. While no scripts were directly extracted, the PDF structure and link farm indicate a likely intent to redirect users to malicious sites, potentially leveraging embedded JavaScript for obfuscation or further exploitation.

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://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/160976b84b8bd6---loneradelika.pdf In PDF document text
- https://amirep.com/wp-content/plugins/super-forms/uploads/php/files/6f6037b85443cf8066f6f2fe80a90843/39242040492.pdfIn PDF document text
- http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16070827fec854---24103168236.pdfIn PDF document text
- https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/761bf3d99cee54327ba81808e82e4d6d/44882580834.pdfIn PDF document text
- https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/a1cd3744fe9977194b409ec7fb49d0cc/58465042422.pdfIn PDF document text
- http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160966db4aba5d---36972207614.pdfIn PDF document text
- https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/1d6b670ef6ccf0ade5808baa2921a5b1/90931946752.pdfIn PDF document text
- https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/rqjbd9mljvmr0713kag2snmho8/26349335280.pdfIn PDF document text
- http://cloverpark1961.com/clients/6/6a/6a73a08bb68f643008adb5efbbb44e43/File/39201505361.pdfIn PDF document text
- https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/ia3ra2pqk330fvk6g8v7pc3ae9/25174415828.pdfIn PDF document text
- https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d7913e6d0cd---96526157662.pdfIn PDF document text
- http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a754de8fe97---7383452487.pdfIn PDF document text
- https://tlpnw.com/wp-content/plugins/super-forms/uploads/php/files/87a681c442c8df68e465ce6e7b207623/2938126597.pdfIn PDF document text
- http://susanirvine.com/clients/82887/File/83676195905.pdfIn PDF document text
- http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/160940fad2d450---zitedev.pdfIn PDF document text
- http://mtcongnghiepxanh.com/upload/fckimagesfile/59798419631.pdfIn PDF document text
- https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b19b114f9ca---22294206658.pdfIn PDF document text
- http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b57ec2a94d9---kipegozemode.pdfIn PDF document text
- https://thaiwoodengames.com/files/upload/files/7595389169.pdfIn PDF document text
- https://www.kcequipment.com.au/wp-content/plugins/super-forms/uploads/php/files/732b4744888110f18ff1b42f6fca0d37/4190808098.pdfIn PDF document text
- https://technok.cz/wp-content/plugins/super-forms/uploads/php/files/51bcdab9d1442743aed368485ad43ba3/43592709119.pdfIn PDF document text
- http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160acaf6010fff---girurawamifimoxuropadod.pdfIn PDF document text
- http://videofilm-tv.ru/content/File/kalixepaxuw.pdfIn PDF document text
- http://ceomit.com/fckupload/file/warutidagugevesolux.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=class+10+maths+chapter+wise+important+questionsPDF 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_off0000ed0b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xED0B	16644 bytes
SHA-256: `5c47685bde477c7e7912410a65c2097804382847e086e589b90c34ce038de1e4`
`font_01_sfnt_off00011840.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11840	11176 bytes
SHA-256: `3a50ab3f060b219ef08e03f7ce60af51e2f5ce4f102b6c6102dc670ccd670eb7`
`font_02_sfnt_off0001324d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1324D	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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