PDF malware analysis — malicious · 5d88fc814ce70314

MALICIOUS

PDF

87.4 KB Created: 2021-10-12 00:12:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18

MD5: 8cef0f9ae1e0cf7552cbbb81f655b577 SHA-1: 89c632259848b8ca46eb0ab569e6b10179a83940 SHA-256: 5d88fc814ce7031462173d9cd22c294f401a0620e1e1225a7a1f0608032ed622

156 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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://www.medicalbi.com/ckfinder/userfiles/files/52008169693.pdf In PDF document text
- https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/e947cb3d548181afb1d839a721e79e9c/gomolozawofenifo.pdfIn PDF document text
- http://poddertradingandindustries.com/userfiles/file/kuzuninivuredarasiguboba.pdfIn PDF document text
- http://solarexperten.ch/fckeditor/editor/images/file/zebufesoribele.pdfIn PDF document text
- http://china-miyaco.com/img/file/2021927101747.pdfIn PDF document text
- http://mn-print.ru/ckfinder/userfiles/files/24058588813.pdfIn PDF document text
- http://clairerolo.com/userfiles/file/gabupikezumefova.pdfIn PDF document text
- http://pjzhengwang.com/upload/file/20210911_103538_175.pdfIn PDF document text
- https://rallstarawards.us/nbloom/fckuploads/file/bukenexufodirobaparug.pdfIn PDF document text
- https://dauglita.lt/components/com_mijoshop/opencart/image/data/files/mefasatafugenesewo.pdfIn PDF document text
- http://kingbikeonline.com/images/upload/File/72310222216.pdfIn PDF document text
- https://enilubricantvn.hoakhanh.vn/uploads/image/files/lajesamawekebozigid.pdfIn PDF document text
- http://pro-group.ru/userfiles/files/nogurubewovesisifog.pdfIn PDF document text
- https://riwg.in/userfiles/file/kuzezezo.pdfIn PDF document text
- http://25630638.kad.tw/kads/ckfinder/userfiles/files/ruzudetuzavosure.pdfIn PDF document text
- https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/3qphiahgbed14t7q4oks7d3cpm/80367798405.pdfIn PDF document text
- http://highlevel.pl/userfiles/file/tebumisefifemamu.pdfIn PDF document text
- https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/a2e575db4b10c49ab85a92d2a9f3eda5/19730150766.pdfIn PDF document text
- https://mytekas.com/UserFiles/file/12622902308.pdfIn PDF document text
- http://pusancard.com/userData/board/file/7080636234.pdfIn PDF document text
- http://houselandia.ru/files/pojowatedujufuvitojuwi.pdfIn PDF document text
- https://www.assofmt.org/ckfinder/userfiles/files/fovemovelomugivarus.pdfIn PDF document text
- https://feedproxy.google.com/~r/Gsjc/~3/896FEnmJZlk/uplcv?utm_term=the+secret+life+of+bees+online+bookPDF 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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000eaa0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEAA0	20800 bytes
SHA-256: `52de32bfe3d232371e0544b721c9b13712494e514cb41be94e7acace11e53919`
`font_01_sfnt_off0001201f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1201F	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00013836.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13836	10468 bytes
SHA-256: `1b6d7e358ab0c5d55deec58b8b01ec56fc552b3317634c3fb7bcc70f133397b8`

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