PDF malware analysis — malicious · 793801af270320c9

MALICIOUS

PDF

79.4 KB Created: 2021-08-28 21:11:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15

MD5: 8b6177713bed997d3a8dbd0065980e56 SHA-1: 03a2ec43b31785fd444e547a296de3e13578f2bd SHA-256: 793801af270320c991b3802fc54add6ccc38b693e571138d03b167e3db93f469

156 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9988

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://nomylo.ru/uplcv?utm_term=bsc+1st+year+botany+book PDF link annotation
- https://www.truck-transport.com/ckfinder/userfiles/files/51127528618.pdfIn PDF document text
- http://chinazzjx.com/d/files/23063042544.pdfIn PDF document text
- https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d92cd9921fa---lonodabobeduduwelolefub.pdfIn PDF document text
- http://skybuildinfraprojects.com/uploads/70531445514.pdfIn PDF document text
- http://daindnc.com/fckeditor/userfiles/file/fajapek.pdfIn PDF document text
- http://reicar.dk/userfiles/file/gewebobi.pdfIn PDF document text
- http://zelene-centrum.cz/webpagebuilder/ckfinder/userfiles/files/kuzezafemivezejigov.pdfIn PDF document text
- http://yomamasushitogo.com/uploads/files/61694591422.pdfIn PDF document text
- http://pcccphucvinh.com/upload/files/45054513879.pdfIn PDF document text
- https://contemporaryteas.in/admin/uploads/file/vagigukidatipadivozate.pdfIn PDF document text
- http://chiangmaicharmingtravel.com/ckfinder/userfiles/files/89128817395.pdfIn PDF document text
- https://www.vedaaz.com/wp-content/plugins/super-forms/uploads/php/files/b235ae8294f72affd2acf1df566ca011/mewokirorutemareluxiwuz.pdfIn PDF document text
- http://air-ned.com/uploads/files/wawumujenoxiregebev.pdfIn PDF document text
- https://clap-bas.com/userfiles/file/53411854115.pdfIn PDF document text
- https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9223c3515e---rolujava.pdfIn PDF document text
- http://asude.istanbul/ck_images/files/83579383426.pdfIn PDF document text
- https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/05916ba574f29f59e086e089e1ac1f9f/4394048442.pdfIn PDF document text
- http://ventilyatsia-v-sochi.ru/ckfinder/userfiles/files/50640612518.pdfIn PDF document text
- https://gospel-streams.com/asset/ckfinder/userfiles/files/90863775167.pdfIn PDF document text
- https://akgoz.zemta.com/uploads/files/wipujivarizidaz.pdfIn PDF document text
- https://rdsdealers.com/ckfinder/userfiles/files/nawawiramategagufoboxudaw.pdfIn PDF document text
- http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbc0bdcee6---padugikogapoloj.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_off0000c964.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC964	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000e176.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE176	19728 bytes
SHA-256: `af93e6ecf8a5f23113f09c528c96ddc7a50dd9d490c0c8efdc5d3bde2af29328`
`font_02_sfnt_off000114ff.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x114FF	10536 bytes
SHA-256: `8c0122fc7c8c656c029724d906b0669b8b117f8b65c62de79c229e4f4bca82d4`

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