PDF malware analysis — malicious · 09723a68d485bdb6

MALICIOUS

PDF

80.4 KB Created: 2021-09-14 00:08:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: b623d36a2db45c14fb72d3787fac4f80 SHA-1: 0f995de7871f5f99ab0b1d755a2007c885f00853 SHA-256: 09723a68d485bdb6ec111d0e205a454329633f931cf6553d0b14dff484182e60

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains embedded JavaScript and numerous external URIs, many of which point to a link farm hosted on disposable domains. The primary purpose appears to be directing users to a collection of other PDF files, likely for phishing or to host further malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9953

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
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.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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://iveducentar.com/uploads/assets/file/napuxunizebidavezuvogiwej.pdf In PDF document text
- https://xn--atpta-nfb.lv/images/userfiles/files/37380294098.pdfIn PDF document text
- http://hladonural.ru/upload_picture/56121480563.pdfIn PDF document text
- http://caerulumpharma.com/upload/files/jemukenafiporu.pdfIn PDF document text
- http://boletin.alicantehosteleria.com/lib/ckfinder/userfiles/files/56591803723.pdfIn PDF document text
- https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/b4a76ca56470bf477143cf383f56cf0f/32934633596.pdfIn PDF document text
- http://xn--oy2b9bv81anouola.com/upload/file/202109130446475753.pdfIn PDF document text
- https://fiscalonline.eu/app/webroot/files/userfiles/files/64476288899.pdfIn PDF document text
- http://ryyw.com/upload/files/2021/09/202109061624202946.pdfIn PDF document text
- https://gadd-asso.org/userfiles/file/xodaxuniwa.pdfIn PDF document text
- https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613265a1a965d---48499734628.pdfIn PDF document text
- https://leo.tw/upload/ckeditor/files/wuwupe.pdfIn PDF document text
- http://fusen-es.info/yamituki-n/uploads/files/fupego.pdfIn PDF document text
- https://istocdukkan.com/userfiles/files/guzabuxutojekuvur.pdfIn PDF document text
- http://tgroupsrl.com/userfiles/files/71499503674.pdfIn PDF document text
- https://novamakine.com/upload/ckfinder/files/52577800244.pdfIn PDF document text
- http://www.gleason.com.au/application/third_party/ckfinder/userfiles/files/9016644159.pdfIn PDF document text
- http://gabident.pl/local/userfiles/file/14961596565.pdfIn PDF document text
- https://ever-progress.com/upload/files/lepuvawumiwe.pdfIn PDF document text
- http://megamento.com/_UploadFile/Images/file/66097506229.pdfIn PDF document text
- http://kzlo.pl/fotki/fotki/file/bijasexediz.pdfIn PDF document text
- http://uniroll.pl/user_images/file/5419549767.pdfIn PDF document text
- http://dkkarsin.pl/img/upload/files/83410125831.pdfIn PDF document text
- http://ibsdhc.hpds.work/ecdemo/web/js/ckfinder/files/files/xemekusezata.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=pov+car+driving+mod+apk+downloadPDF 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_off0000d4de.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD4DE	18276 bytes
SHA-256: `028e0aef7c5b2d08fe04c2bff537b779be95fc422c2c1f13f348f58c86eb7e0d`
`font_01_sfnt_off00010389.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10389	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00011ba0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11BA0	10704 bytes
SHA-256: `6e2742ef31da49702101e203b947cd05dfa46bee83780bc2cbc46dbb57fde04e`

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