PDF malware analysis — malicious · 2d4f4eba2461ab76

MALICIOUS

PDF

72.3 KB Created: 2021-09-12 09:11:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14

MD5: 3fd13be0fb7a276c3ae548cb4f1468b6 SHA-1: 9394e267b561726be3f9d0966e462591652339e2 SHA-256: 2d4f4eba2461ab767c3266e01055c05d2bca39bbec43cd981fdc2bb81e51609e

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The document contains a link farm pointing to numerous domains, many of which appear to be compromised WordPress sites or disposable hosting, suggesting an attempt to distribute malicious content or phish for credentials. No scripts were extracted, but the presence of multiple external URIs and the heuristic findings strongly indicate a malicious intent to redirect users to potentially harmful sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9947

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 http://e-junghan.com/userData/board/file/nigisexijexinusul.pdf In PDF document text
- https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/1612f4fdc2bbda---mozerifasizarukafixobuxu.pdfIn PDF document text
- http://easytravel63.ru/ckfinder/userfiles/files/46530318615.pdfIn PDF document text
- http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613683a248a9e---81251414858.pdfIn PDF document text
- http://cartopack.com/Images/file/naluve.pdfIn PDF document text
- https://dusunceokulu.net/resimler/files/67324771097.pdfIn PDF document text
- http://frankifoto.com/uploads/pages/files/nakitawigepeko.pdfIn PDF document text
- http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1612f6bff5aa26---56846674051.pdfIn PDF document text
- http://htygroup.com/upload/files/94713304136.pdfIn PDF document text
- http://a-aqua.fr/ressource/site-image/files/74439047579.pdfIn PDF document text
- http://lideparts.com/userfiles/file/1631032192.pdfIn PDF document text
- http://xn--zb0bw3kv4s8mn.com/upload/fckeditor/file/wavinitupobafifup.pdfIn PDF document text
- https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613452046f47a---15007183740.pdfIn PDF document text
- https://divanich96.ru/admin/ckfinder/userfiles/files/mapawaforobesoxup.pdfIn PDF document text
- https://aymsoft.us/aym_image/files/3269675340.pdfIn PDF document text
- http://ekotop.eu/userfiles/file/81825091848.pdfIn PDF document text
- https://lawina-radom.pl/files/file/681314387.pdfIn PDF document text
- http://busto-wl.gattinonimondodivacanze.it/themes/userfiles/files/safedewazuvigozizowarig.pdfIn PDF document text
- https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bf10b1a378---gukarisajeloketud.pdfIn PDF document text
- https://usssecuritate.ro/userfiles/file/lijuvolipedegitiza.pdfIn PDF document text
- http://vietkinggroup.com/uploads/userfiles/file/padiduvazusumanagitakig.pdfIn PDF document text
- https://ruedi-leuthold.com/userfiles/files/69884521821.pdfIn PDF document text
- http://jualumnitoronto.com/editor/uploadfiles/8063032943.pdfIn PDF document text
- https://ambalatender.com/upload/files/wikamisalovemi.pdfIn PDF document text
- https://dalilak1.com/userfiles/file/magusonoxinavofiridoxis.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=online+kalender+androidPDF 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_off0000bc19.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBC19	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000d42b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD42B	16212 bytes
SHA-256: `ff2f90188fb81f4945fc0b65f14072b5fdb82823eac7034e36c4aa622f2de92f`
`font_02_sfnt_off0000fd98.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFD98	10092 bytes
SHA-256: `4dc2b907afa6430aa20fe27e8967a64834846e320c6e11fe472273f9ee4899ed`

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