PDF malware analysis — malicious · c5dfd5c6a94f0f30

MALICIOUS

PDF

79.1 KB Created: 2022-04-17 21:35:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-27

MD5: 7c78eadabfa38b95ed1c029d13b1fb6f SHA-1: 8675fcc14f8c9883abb6d5be1f861f14e43b4cdd SHA-256: c5dfd5c6a94f0f300571d7b528c24d36551a6f46901829aebedb5d79e8bee6c6

186 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
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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://colod.co.za/YmrXLWy8?keyword=what%20questions%20do%20they%20ask%20in%20a%20teaching%20assistant%20interview PDF link annotation
- https://loraxero.weebly.com/uploads/1/3/4/3/134332649/87c38c04.pdfIn PDF document text
- http://kjphotocon.org/data/userfiles/files/2795884656.pdfIn PDF document text
- https://zewevenetox.weebly.com/uploads/1/3/4/4/134477768/zapiwilikife-sutugoraxunivul-fojuvofexode-nogud.pdfIn PDF document text
- https://vojonabof.weebly.com/uploads/1/3/1/3/131383251/2fdfb51f.pdfIn PDF document text
- http://chongqinghaohong.com/upload/files/3315581736.pdfIn PDF document text
- https://artgallery.devctn.com/ckfinder/userfiles/files/46397550173.pdfIn PDF document text
- https://jirugewozori.weebly.com/uploads/1/3/4/8/134898712/2615fc6.pdfIn PDF document text
- https://linhan.xelinhan.vn/userfiles/file/robokujif.pdfIn PDF document text
- http://himalayakebab.irafbrothers.com/shipinc/userfiles/files/84296236501.pdfIn PDF document text
- https://juworenuzo.weebly.com/uploads/1/4/1/2/141280251/3463502.pdfIn PDF document text
- https://www.tocarufar.com/sgc/Assets/Plugins/CKEditor/kcfinder/Uploads/files/tunenazivog.pdfIn PDF document text
- http://xinghui.co/upload/ckimg/files/202203080603407741.pdfIn PDF document text
- https://rolemefusibo.weebly.com/uploads/1/3/0/8/130814279/dosagope.pdfIn PDF document text
- https://wolapegod.weebly.com/uploads/1/3/0/7/130776073/8754590.pdfIn PDF document text
- https://dawanuma.weebly.com/uploads/1/3/4/3/134305997/a3eb9989e.pdfIn PDF document text
- https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1623c48e2d8f9b---3758366348.pdfIn PDF document text
- http://kazbani.ru/kcfinder/upload/files/53847178919.pdfIn PDF document text
- https://vedemolo.weebly.com/uploads/1/3/4/7/134702866/favisiw.pdfIn PDF document text
- http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/dd01b61f491d16b64b045cb37be300c3/77614934127.pdfIn PDF document text
- https://niceppl.com/images/file/87675312160.pdfIn PDF document text
- https://nowitapa.weebly.com/uploads/1/3/1/4/131438176/5621228.pdfIn PDF document text
- https://nutuneronasida.weebly.com/uploads/1/3/4/2/134266022/cea60d80c9f1b0.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_off0000d0ca.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD0CA	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000e8e1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE8E1	11200 bytes
SHA-256: `fe3f64d60e218362edd1a29ffbe6832e9c6c8670624f9d547ac4f5476439db1f`
`font_02_sfnt_off000102ac.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x102AC	16664 bytes
SHA-256: `e4d38a346f6d4a2feeea95c8060e2b49e0f4a3b39e44002d2da117a613ab033c`

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