PDF malware analysis — malicious · f992af8d7d90e8d1

MALICIOUS

PDF

95.9 KB Created: 2021-09-05 07:04:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-13

MD5: 355c57a6ca6a0f6c1a1f58fe904cee4e SHA-1: 257cd32d362f66aa36dedcea8c2be48406b11145 SHA-256: f992af8d7d90e8d13d427d036d3ba244e633f1af8d50556bed306c1407ac818a

156 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9988

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://inwebjor.ru/uplcv?utm_term=story+book+english+with+pictures+pdf PDF link annotation
- http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607c32a8dc268---fesimukejolowuxemaku.pdfIn PDF document text
- https://homeuu.biz/upload/ckeditor/pages//files/51938755672.pdfIn PDF document text
- http://qianlong99.org/ckfinder/userfiles/files/55265808219.pdfIn PDF document text
- http://mikomisushiwc.com/uploads/files/94254755219.pdfIn PDF document text
- https://agriturismoilcolle.org/userfiles/file/48673607910.pdfIn PDF document text
- https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dc5ab16bb2f---bozobigewemosefo.pdfIn PDF document text
- https://damsindia.org/admin/uploads/file/9901576875.pdfIn PDF document text
- http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/160790f558afbc---nibujatekelovajigapexaxo.pdfIn PDF document text
- http://rspon.pl/images/wyswig_images/file/notuxegedekekofopasuk.pdfIn PDF document text
- http://musorcentrum.hu/files/article/file/diwudegurakuxuramuri.pdfIn PDF document text
- https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160779cd721cb4---70574837569.pdfIn PDF document text
- https://pensiunea-escape.ro/ckfinder/userfiles/files/77399378094.pdfIn PDF document text
- http://szolnokepul.hu/userfiles/file/xafizajagiw.pdfIn PDF document text
- http://cheers-gifts.com/userfiles/26854093333.pdfIn PDF document text
- https://kingwrapcarspa.com/upload/files/suronamapamuxu.pdfIn PDF document text
- http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/d1c14661c5a99dcc163db9c149f4e2e2/sejevivo.pdfIn PDF document text
- http://jyjwqj.com/uploadfile/file///2021051910203124.pdfIn PDF document text
- https://sinhadventure.com/uploads/file/38060163601.pdfIn PDF document text
- http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072242215a4e---29381331003.pdfIn PDF document text
- http://jaatkinson.com/userimages/luzegap.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_off00010e9c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10E9C	18728 bytes
SHA-256: `f209b7c0bff5161ef3db8b1994659684210d0040d94dc88101393c294bfc5248`
`font_01_sfnt_off00013f98.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13F98	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off000157af.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x157AF	11344 bytes
SHA-256: `b16c0ab5ad8eabbe9d2faad012b03c0fc1f0b9f2eaad9e49f10e678b29e885a6`

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