PDF malware analysis — malicious · 4e3b94df77817d9c

MALICIOUS

PDF

69.6 KB Created: 2021-08-31 03:36:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19

MD5: 5e510372c1d4f0cb33dd6625508c112c SHA-1: 64bcd132475b617f88a875ca03dda6a062ff5761 SHA-256: 4e3b94df77817d9c545e9a04e750729fc6b06e1e1736210cbc35e3a8702e99ac

156 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9965

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://wastran.ru/uplcv?utm_term=anger+and+bitterness PDF link annotation
- https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aac82ce5ccd---paletesopezoxobakasajuza.pdfIn PDF document text
- http://go-pxl.com/uploads/files/13707187210.pdfIn PDF document text
- http://soepcentrale-dekeyser.be/userfiles/file/bodomubavegujuj.pdfIn PDF document text
- https://loctra.net/userfiles/file/minobewefosuvuwab.pdfIn PDF document text
- https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/9b71d2add81e64f0c852b0772169e1ad/18044639165.pdfIn PDF document text
- http://0985028898.kad.tw/kads/ckfinder/userfiles/files/69664867536.pdfIn PDF document text
- http://www.papelerialapiceros.es/ckfinder/userfiles/files/2079095725.pdfIn PDF document text
- http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/160737b4be98ab---pupuso.pdfIn PDF document text
- https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/6c3fe365d6dbb4c2b19b48710f0b703d/devuzinaribo.pdfIn PDF document text
- https://dietacud.eu/upload/file/12720684536.pdfIn PDF document text
- http://jjinline.org/file_upload/file/sakuzeduk.pdfIn PDF document text
- http://www.stemcellhairclinic.com/files/files/85959311005.pdfIn PDF document text
- http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/444d891ad5382707bfa88c067e1acd83/65359880838.pdfIn PDF document text
- http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/1612cb060ed911---59916465525.pdfIn PDF document text
- http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1a447dad26---77287670778.pdfIn PDF document text
- http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160faf8fce9f97---97058312641.pdfIn PDF document text
- https://ryokanclub.com/FileData/ckfinder/files/20210701_F11096872AD41B2B.pdfIn PDF document text
- http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/1607af2730f63a---joxoluro.pdfIn PDF document text
- http://folientastaturen.pl/_data/file/12639671324.pdfIn PDF document text
- https://varbackaforskola.se/ckfinder/userfiles/files/61215185986.pdfIn PDF document text
- http://visionbrindes.com/admin/fckeditor/userfiles/file/70706174628.pdfIn PDF document text
- https://marljivo.hr/userfiles/file/56860650407.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_off0000b408.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB408	10376 bytes
SHA-256: `6f81bc37ca07ed39d7f4faa42136395786052712dff6f77457f3426c4ebec742`
`font_01_sfnt_off0000cb6d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCB6D	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off0000e37f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE37F	15188 bytes
SHA-256: `99f16dcf769ce843862a662e2c1365de3a16900946b625bdfd50b2ca10f7bc13`

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