PDF malware analysis — malicious · 02728f21f32f511a

MALICIOUS

PDF

75.5 KB Created: 2021-07-10 04:18:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05

MD5: a71f451c551551517c7dea4e38d4d646 SHA-1: 746be62808fd0e853e4cf04e4848d65374785b5e SHA-256: 02728f21f32f511acfea6850068b9905fb7e2a47687df04abc488c92464cb844

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ClamAV and an ML classifier. It contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.

Machine Learning

Nyx PDF Classifier malicious score 0.9827

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://philabc.ru/uplcv?utm_term=ex+with+benefits+full+movie+link PDF link annotation
- http://npxbyy.com/wang3_3_10_27/Upload/Upload/file/2021620171143741.pdfIn PDF document text
- https://www.apollopowersystems.com/wp-content/plugins/super-forms/uploads/php/files/4091228d0f4cb0db51aaaaf9a0ee8daa/bebujoza.pdfIn PDF document text
- http://www.circoloaletrium.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607978eba8f05---9859136299.pdfIn PDF document text
- http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608ace941b776---6603528687.pdfIn PDF document text
- https://www.urban-quartz.co.uk/wp-content/plugins/super-forms/uploads/php/files/1b7f874bb602a09bfdb95848e5e034b0/tabafonevu.pdfIn PDF document text
- http://happyhanool.com/ckupload/files/xubugegitikamel.pdfIn PDF document text
- https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c95e717d59f---49887061917.pdfIn PDF document text
- https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/8df52a27216977267dc52a1190b83b61/70874910494.pdfIn PDF document text
- http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/c36260eb40dcec245500813870bca331/29300313373.pdfIn PDF document text
- http://springswellness.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b41da43fce0---tajuden.pdfIn PDF document text
- http://nova-auto.com/upload/rurofutelowarigobom.pdfIn PDF document text
- http://onfireinteriors.com/userfiles/barawagagilifi.pdfIn PDF document text
- https://www.litesourcenc.com/wp-content/plugins/super-forms/uploads/php/files/0083b492d44f8af5da476d7acca72bc3/52862473641.pdfIn PDF document text
- https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/ff4d67afe8cd881ab910f0ab11c8cf4a/50403747766.pdfIn PDF document text
- http://flooroverstock.com/admin/userfiles/file/70647768774.pdfIn PDF document text
- https://zoomkish.com/basefile/zoomkishcom/files/50804545964.pdfIn PDF document text
- http://xn--aknmedikal-yub.com/uploads/file/bijifuvuxufobikavop.pdfIn PDF document text
- http://csc028.com/userfiles/file/20210620154433_gccz2u.pdfIn PDF document text
- https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608afcc03b99e---vizaletimezimisabawal.pdfIn PDF document text
- http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160cbc1af4498b---ribaxop.pdfIn PDF document text
- http://jubileejec.com/userfiles/files/9311328605.pdfIn PDF document text
- https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/9e179a2543d5c05a1d46aadc18b480b3/50408647066.pdfIn PDF document text
- http://xn--b1akwe.xn--p1ai/userfiles/file/64606027265.pdfIn PDF document text
- http://bean2beenefamilytree.com/clients/60578/File/bepedenemekure.pdfIn PDF document text
- http://ctmmaximoravenna.com/ckfinder/userfiles/files/romufozofegirurakad.pdfIn PDF document text
- http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607228371e012---30941202354.pdfIn PDF document text
- http://www.kizkulesikizogrenciyurdu.com/public/ckfinderuploads/files/93142964930.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_off0000c2ba.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC2BA	17012 bytes
SHA-256: `6f787412bcdefd251919f194649089394efe77b60ae133ca7e07233e1beb686a`
`font_01_sfnt_off0000ef6d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEF6D	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00010784.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10784	10784 bytes
SHA-256: `9e58a0bd78728d1c980973c466fb9eab571662476fe32ca7f6cb1717a673fa12`

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