PDF malware analysis — malicious · f8771d59b4f10ba6

MALICIOUS

PDF

335.8 KB Created: 2022-01-31 08:05:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-16

MD5: b398eb1fe0c0ddc037533c34644c5828 SHA-1: 79f108edfb3f224eb23b8d4d04e0094ff4ca69d7 SHA-256: f8771d59b4f10ba69d9fc9d15517d0c3ab09beed5bcadb20ea89b96296a4e0b1

174 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.5879

Heuristics 7

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK

PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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://loheb.co.za/XSRYdR1H?utm_term=bruchrechnen+aufgaben+pdf+mit+l%C3%B6sungen PDF link annotation
- https://kolegium.inaheart.org/upload/files/93843013961.pdfIn PDF document text
- https://dogodanang.vn/uploads/image/files/sepefiridux.pdfIn PDF document text
- https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/1lvhuqu94qacrbi6mgvv53qt30/14143761634.pdfIn PDF document text
- http://autosvanbeek.nl/mindcms/js/ckf/userfiles/files/90360581069.pdfIn PDF document text
- https://brtim.com/uploads/wysiwyg/files/27237820402.pdfIn PDF document text
- http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/161e5d727e46a5---32007051400.pdfIn PDF document text
- https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/61420c9843a9a0d3dfb076e8fe228377/1773077534.pdfIn PDF document text
- http://www.cddfct.com/up_files/file/30023125860.pdfIn PDF document text
- http://key-pro.jp/kcfinder/upload/files/41625265124.pdfIn PDF document text
- https://tailormade-sales-marketing.com/userfiles/file/foterusitarupedenel.pdfIn PDF document text
- https://cherrychile.cl/cherry/uploads/contenido/files/53548326328.pdfIn PDF document text
- https://flavio-tonon.it/public/file/donos.pdfIn PDF document text
- http://ageofwonders.buka.ru/sadm_files/81503270367.pdfIn PDF document text
- https://portalbime.com/UploadedFiles/New/file/femenuxeronujekotep.pdfIn PDF document text
- http://atrsara.ir/resource/files/zalodededisujo.pdfIn PDF document text
- http://studiobardinisrl.com/userfiles/files/lusakolodamurisoke.pdfIn PDF document text
- http://www.jacenter.org/js/ckfinder/userfiles/files/84250427820.pdfIn PDF document text
- http://xn--80aguejfegacgj0ad.xn--p1ai/pict/file/81937350026.pdfIn PDF document text
- http://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/1618e483834b56---jokafinow.pdfIn PDF document text
- https://lesrimaudieres.com/images/uploads/file/51705842176.pdfIn PDF document text
- http://hadt.vn/upload/files/sezewafivi.pdfIn PDF document text
- http://popnmusic.fr/userfiles/file/14466789725.pdfIn PDF document text
- https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161ed994196269---12121007558.pdfIn PDF document text
- http://familiehollander.nl/images/uploadedimages/file/mavefulafogomorofusirezap.pdfIn PDF document text
- https://calmoinc.com/upload/editor/file/fowup.pdfIn PDF document text
- http://due.pt/js/ckfinder/userfiles/files/dasolon.pdfIn PDF document text
- http://goldcoil.com/uploadfiles/files/mitasabelijivitajelivaj.pdfIn PDF document text
- http://corising.info/sa_upload/userfiles/file/20211115090220.pdfIn PDF document text
- http://healthywithhart.com/res/file/62506682775.pdfIn PDF document text
- http://recepti.plovdivweek.com/js/ckfinder/userfiles/files/77671410452.pdfIn PDF document text
- http://www.andreapondika.cz/file/zoxulavodigerapomi.pdfIn PDF document text
- https://eklyps.net/images/file/73679322288.pdfIn PDF document text
- http://veterinariacasettamattei.it/userfiles/files/gonokarek.pdfIn PDF document text
- http://yujinpharma.com/upload/files/pupumajivovag.pdfIn PDF document text
- https://mots.alaxarxa.cat/cmsimple/images/file/mofikazuterozek.pdfIn PDF document text
- https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/161a4a2f897cca---47954641155.pdfIn PDF document text
- http://elcampoeco.org/FCKeditor/file/92176505043.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_off0004cf15.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4CF15	11452 bytes
SHA-256: `3019545f59c63cefa0eed8122c1957c7ad4f512d51f1c59b5d22f413c8f8cd72`
`font_01_sfnt_off0004e96e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4E96E	17644 bytes
SHA-256: `3d29199c761f854ec9c02b1bf45d92883b70cdcb443277c830b954b15f615c26`
`font_02_sfnt_off00051639.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x51639	16416 bytes
SHA-256: `cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336`

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