PDF malware analysis — malicious · 72b55928b978d771

MALICIOUS

PDF

71.8 KB Created: 2021-12-08 18:53:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28

MD5: 1eaaf40c8060daf29f96597329d0caa4 SHA-1: 71ea89e809e39a0fc478ccb1f7e95dc99da6e32c SHA-256: 72b55928b978d7713b0081491a5bfd27d898eba2e886fa38e128ea2237836a23

156 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9986

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://queure.ru/uplcv?utm_term=my+canvas+english+book+class+7+solutions+pdf PDF link annotation
- http://shinhwacar.com/userData/board/file/58075818354.pdfIn PDF document text
- https://eagleegg5k.com/ckfinder/triplebuserfiles/file/lorivofoderuwoxetatimerab.pdfIn PDF document text
- http://klubalfa.org/img/userfiles/file/zolikibujisofonipok.pdfIn PDF document text
- https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/d4a0da5d2fabbe6a9e3215d5becc5bbb/61594229354.pdfIn PDF document text
- http://kenhuffbuilders.com/userfiles/file/jafosogizumigizakud.pdfIn PDF document text
- http://pogologistics.com/ckfinder/userfiles/files/buvanem.pdfIn PDF document text
- http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16145a41087c4c---54538713387.pdfIn PDF document text
- http://www.impactit.in/ckfinder/userfiles/files/89281436408.pdfIn PDF document text
- https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/4a3a9ae8468df7129734d4e994f43f55/97082578942.pdfIn PDF document text
- http://computergramm.com/userfiles/file/walofabutulokejipavuxurux.pdfIn PDF document text
- https://srmhomes.com/images/bulk_images/files/98412736667.pdfIn PDF document text
- https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/16135f0ee010d2---83174132233.pdfIn PDF document text
- https://igk-lilienthal.de/downloads/64985141534.pdfIn PDF document text
- https://reparationmobile.net/userfiles/file/58976042462.pdfIn PDF document text
- http://cerescommoditiesltd.com/Images_upload/files/24491717919.pdfIn PDF document text
- https://isgz.me/userfiles/file/3260764310.pdfIn PDF document text
- http://beautifulmoda.com/userfiles/files/70104481685.pdfIn PDF document text
- https://rebates.forex/wp-content/plugins/super-forms/uploads/php/files/ut7k38e0ruopf2adh5oai0h592/neduwewagugidimuresuxur.pdfIn PDF document text
- http://www.c-l-r-p.com/admin/ckfinder/userfiles/files/tumuwozirozejabejupu.pdfIn PDF document text
- https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1616c00ca96d02---12048878807.pdfIn PDF document text
- https://weilmclainboiler.ca/fck_upload/file/buzilolovu.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_off0000b132.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB132	11352 bytes
SHA-256: `4abc981dea467abf28c82ce16bdab4ea1c1bc9d3d4183e01ecd2a5f58bd99065`
`font_01_sfnt_off0000cb8e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCB8E	16416 bytes
SHA-256: `cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336`
`font_02_sfnt_off0000e22d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE22D	18532 bytes
SHA-256: `ba2e9a0cb6e3c166d0dc719377f5bf1cbac2db54a6e27316d1e65908ad0a6fd5`

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