PDF malware analysis — malicious · 29ca3c16ca3d4f5c

MALICIOUS

PDF

75.7 KB Created: 2021-07-08 03:01:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05

MD5: 2d07370281328c03aa1299ab4f4e07b9 SHA-1: 9b96463368c6acc83927538ee3287253a5d004e3 SHA-256: 29ca3c16ca3d4f5ceeb76fe90b3c9419e30b7bf41d64cb3609c939b58d70e3bc

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous URLs, many pointing to compromised WordPress sites, suggesting it's designed to lure users to malicious content or downloads. The PDF structure itself is indicative of a link farm, a common tactic for distributing malware or conducting phishing campaigns.

Machine Learning

Nyx PDF Classifier malicious score 0.9953

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://drafthe.ru/uplcv?utm_term=geometry+unit+7+test+right+triangles+and+trigonometry PDF link annotation
- http://compufoxmail.com/userfiles/file/99563464688.pdfIn PDF document text
- https://reflexlighting.com/wp-content/plugins/super-forms/uploads/php/files/25badd20df0b57c9ab130ed26a54467e/xaxurubuvokofi.pdfIn PDF document text
- http://anthonyvienna.com/sites/default/files/file/tifagen.pdfIn PDF document text
- https://phoenixknights.co.uk/wp-content/plugins/super-forms/uploads/php/files/44d96cc92f41bb52e73fb2aac07bd647/54578561535.pdfIn PDF document text
- https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085bf0815529---ziboged.pdfIn PDF document text
- http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082465d3a504---wuzadulelizi.pdfIn PDF document text
- https://247christianity.org/fckeditor/userfiles/file/repimuzeruzarusaxepa1622780426.pdfIn PDF document text
- http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160cef27653b8c---pasefovid.pdfIn PDF document text
- https://alismobile.co.uk/wp-content/plugins/super-forms/uploads/php/files/0023baa75265328569c98c601892c551/21413328464.pdfIn PDF document text
- http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa40bcbe838---10621284313.pdfIn PDF document text
- https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/3gshbvucjia916po93cfecr3ad/xiwazagakew.pdfIn PDF document text
- https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/160964f9f1f026---81703993398.pdfIn PDF document text
- http://sciencevier.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cc9633b18a7---73422173576.pdfIn PDF document text
- http://gojjang.com/uploads/files/84315593555.pdfIn PDF document text
- https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/f284f282118dbdba57b4a6fa3dfc1cf3/99660439962.pdfIn PDF document text
- https://destockbaby.com/ckfinder/userfiles/files/63262585390.pdfIn PDF document text
- http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/160940e7bf135f---sejokutexirijuzozugesaw.pdfIn PDF document text
- http://debden.org/userfiles/file/31725253396.pdfIn PDF document text
- http://hoaisonland.vn/upload/files/teruwigerogumolekatuxesi.pdfIn PDF document text
- https://www.ideaklinikbursa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079265088da8---wirurijekikixo.pdfIn PDF document text
- http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/f6f4adc73b34e7ebb794f7d597e090ff/galufinafavejabatuvon.pdfIn PDF document text
- https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/e89ee6f2e436e22a19d9585a6ee6bb6e/53149855065.pdfIn PDF document text
- https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/6ihm7t9ktghraa7tqtproc30n0/29080522710.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_off0000c3d2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC3D2	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000dbe4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDBE4	16740 bytes
SHA-256: `c93145eb1ce084ad77025bd60253911fd2966286d3310b3fe596d88a76e1391d`
`font_02_sfnt_off000107bf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x107BF	10996 bytes
SHA-256: `d2cf6a519c364491c578813ce07225fddc0b2ed6fb996913e5ec97d1d8b20253`

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