PDF malware analysis — malicious · b9f6c57af474ea36

MALICIOUS

PDF

80.6 KB Created: 2021-09-01 15:51:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: 62e3bd086effcf3f51ade0796f77058a SHA-1: 65f47219c7f6afd506edcc055cdaf2a5a26b80c8 SHA-256: b9f6c57af474ea3618e64b5f5e2a43a8f949af3922c076b9d1b36cbb3a55bda8

156 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9995

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://cicadit.ro/UserFiles/file/wuvezafavebunuwosujikewos.pdf In PDF document text
- https://jiptv.nl/wp-content/plugins/super-forms/uploads/php/files/0s3ktetrrn8rp7gda924j5j2ac/17076693762.pdfIn PDF document text
- http://paroissedementon.fr/upload/files/jemewubavediwikak.pdfIn PDF document text
- https://www.tcf.gov.tr/ckfinder/userfiles/files/41918020110.pdfIn PDF document text
- http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16078aec608960---nezurowukoguzekan.pdfIn PDF document text
- https://aquafilling.com/userfiles/file/wimovutivugezugibogakusuf.pdfIn PDF document text
- https://useoneconvo.com/wp-content/plugins/super-forms/uploads/php/files/07cc752383cfc7e3a913f43c87a9cc2c/rozewarowisaviwevumizaw.pdfIn PDF document text
- https://bharatbiodiesel.com/userfiles/file/41522958635.pdfIn PDF document text
- http://xn--tnqz8hz5cb8l.com/upload/files/60506502111.pdfIn PDF document text
- https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/r0dmnvp24po0gaeh54f1ge7udl/gaxukefarak.pdfIn PDF document text
- http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16077a0059a6ee---44163820261.pdfIn PDF document text
- https://www.kunapak.com/wp-content/plugins/super-forms/uploads/php/files/4on5kr4it5v2s41i04ldt95nkl/sebos.pdfIn PDF document text
- https://www.zulilighting.com/wp-content/plugins/super-forms/uploads/php/files/389c84a20818df99e4c69671eea493d8/20173999226.pdfIn PDF document text
- https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/9376198ed50bdbe8e7e04841d59e0ac1/37700215564.pdfIn PDF document text
- http://www.kymkarajok.net/tiedostot/files/dizeramekuwo.pdfIn PDF document text
- http://botosani.ro/img/uploads/file/fikazixuzaroxisop.pdfIn PDF document text
- https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/08b3da06b41750dfaf6351463f83b4ca/62348522348.pdfIn PDF document text
- http://cordovajewelry.com/images/file/30731577428.pdfIn PDF document text
- http://zzfcw.com/file/fkimg/file/nijoberelenasitu.pdfIn PDF document text
- http://1night2day.com/ckupload/files/42837906215.pdfIn PDF document text
- https://hotelite.in/userfiles/file/pimawopolubetafomudil.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=words+that+start+with+j+and+end+with+oPDF 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_off0000d530.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD530	18440 bytes
SHA-256: `1252eef3c7c68251e1e5feae6f38476842e0f23376cc0dcb80e7443249572c6f`
`font_01_sfnt_off0001043e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1043E	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00011c55.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11C55	10508 bytes
SHA-256: `4faf5ef6024ad297e5de5c7f092b90c4756ac470468d94d345f8623b6b8cb4f9`

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