PDF malware analysis — malicious · 5854dfb69394e95f

MALICIOUS

PDF

93.4 KB Created: 2021-07-04 00:46:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05

MD5: 7c4c3c1a787e75bcfb973ef7a6034909 SHA-1: c3a2fbc68ecfcd70856aa0eefa87e2d476225791 SHA-256: 5854dfb69394e95fd5a0d0f56b6ac640800df13731ec8e717ed0dceded22e547

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a large number of links pointing to various websites, many of which are hosted on compromised CMS platforms or disposable domains. This structure is indicative of a link farm designed to distribute malicious content or facilitate phishing attacks. The ML classifier and ClamAV detection strongly support the malicious nature of this PDF.

Machine Learning

Nyx PDF Classifier malicious score 0.9924

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 http://arch-teh.com/pic/userfile/tufokulowupazeduw.pdf In PDF document text
- http://jfkanacon.org/data/userfiles/files/xuwakojo.pdfIn PDF document text
- https://xn----9sbccjdbca7cyaieg1a3j.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/0cc3accbe49cf24c68e3a735cad05b76/vaketosesilev.pdfIn PDF document text
- https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/0118df694d22f00d16761e24489baa0f/33663292745.pdfIn PDF document text
- http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089a75818f9d---pixawurasenalatipuzupel.pdfIn PDF document text
- https://x-software.cz/data/file/35537626793.pdfIn PDF document text
- https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/mjla2i88k152ta090qd3ujdlec/tubuw.pdfIn PDF document text
- https://accounting789.com/ThImg/file/wipefixoxeboba.pdfIn PDF document text
- https://pablohernandes.com/wp-content/plugins/super-forms/uploads/php/files/14fe24c69dadf29974dea016cf3a5703/70970366590.pdfIn PDF document text
- https://4appsoftware.it/file/28070955891.pdfIn PDF document text
- https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/f68f64df06268aeb632b7b49651cd1cd/4547944661.pdfIn PDF document text
- http://feach.ie/images/uploads/file/nopenugul.pdfIn PDF document text
- http://kawoka.com/userfiles/file/kosesesejusi.pdfIn PDF document text
- http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/16091c7464357b---76762057247.pdfIn PDF document text
- http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160961eaa1af7d---rikusitukavebabudubekoso.pdfIn PDF document text
- https://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/40ukc1vqgb1t4k5f5evcctvbrs/rejivema.pdfIn PDF document text
- http://slp70.com/clients/873855/File/kesogebegerovexira.pdfIn PDF document text
- http://wabasnb.com/files/fckeditor/file/38803998060aaaed0bf21d.pdfIn PDF document text
- http://xboxheerlen.nl/userfiles/file/tiwifomiwovudob.pdfIn PDF document text
- http://fdscience.com/UPFILE/userfiles/files/17824537523.pdfIn PDF document text
- https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/b86906556efa1317b3c118cb3c051525/44118766948.pdfIn PDF document text
- https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/16072ac88291bf---gokaloruzamoniwe.pdfIn PDF document text
- https://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c9d2968ee56---13624705250.pdfIn PDF document text
- https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/fa53f48fdeddaf3c86257a30d65d2ebf/mefanogez.pdfIn PDF document text
- http://grawerlik.pl/userfiles/file/27014515127.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=english+question+answer+for+class+2PDF 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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f1d9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF1D9	16276 bytes
SHA-256: `ef858b01719cec29ba59f81a977f79613a1aab7fbc1f32c2ef09c5dd0d876d7f`
`font_01_sfnt_off000107d2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x107D2	17604 bytes
SHA-256: `63df7492694b437be7309cd2b2f9db326f5b3d84d68ba212fd8fa5809a3f89ab`
`font_02_sfnt_off00013613.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13613	11052 bytes
SHA-256: `c63e99dcca7eefcbbca0b12f9caa191145f87afb512de892b11c8a93bd4fbfd2`
`font_03_sfnt_off00014f93.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14F93	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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