PDF malware analysis — malicious · af2f6f2c5c68b5db

MALICIOUS

PDF

331.1 KB Created: 2022-04-05 10:45:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22

MD5: 273ce7bea2b514f835af1297ae78ecd0 SHA-1: 8c6de82708fb5785c80d267be7919f301b83bd78 SHA-256: af2f6f2c5c68b5dbd7383a0df7b0e682e5ea9547eb4c54d691f6fa56f6c30765

174 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.6374

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://lovig.co.za/XSRYdR1H?utm_term=cuadernillo+conciencia+fonologica+pd PDF link annotation
- https://topas-septiki.com/media-temp/img/uploads/files/83133665174.pdfIn PDF document text
- https://hirurgija.me/files/zemuneweves.pdfIn PDF document text
- http://teplorium.su/userfiles/file/juzipokaweguzokejanep.pdfIn PDF document text
- https://rapn.ru/ckfinder/userfiles/files/kubuvimixobize.pdfIn PDF document text
- http://papierplus.pl/userfiles/file/76230807129.pdfIn PDF document text
- http://mecateengenharia.com.br/ckfinder/userfiles/files/dixalipovupizevufovikunu.pdfIn PDF document text
- http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/rejb2dps4ok1d2mgh907vedqo1/84356260536.pdfIn PDF document text
- https://icaiaa21.scrs.in/kcfinder/upload/files/32147971889.pdfIn PDF document text
- http://acm-medicali.it/userfiles/files/gopamudoge.pdfIn PDF document text
- http://vektorma.ru/uploads/assets/file/gijimimobisotiwoximevup.pdfIn PDF document text
- https://www.ibbfvhn.org/recursos/kcfinder/upload/files/riwurirejazajix.pdfIn PDF document text
- https://nakipoglugroup.com/upload/ckfinder/files/wazejutunidepenavunuzinaw.pdfIn PDF document text
- http://hfengly.dk/skoleportalen/userfiles/file/merafenesupaxuvufibefof.pdfIn PDF document text
- http://kungfubp.hu/admin/assets/images/files/pedigavoxenulevogogetuw.pdfIn PDF document text
- http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/16212a9b69be36---lerorolamuzejotig.pdfIn PDF document text
- http://seanmore.com/userData/board/file/dorujogip.pdfIn PDF document text
- http://ateliergermain.net/sites/default/files/file/fuguvuxebodazugolov.pdfIn PDF document text
- http://hudebninastrojedrastik.cz/js/kcfinder/upload/files/zalozolugozizizutusi.pdfIn PDF document text
- http://parateam.cz/file/tukibawumutovowulok.pdfIn PDF document text
- http://dgjst.com/upfile/file/70683296956.pdfIn PDF document text
- https://vida.posilatko.cz/files/wswg/files/mewowonafodifuvujikakena.pdfIn PDF document text
- https://baxsporthorses.com/userfiles/file/77999910021.pdfIn PDF document text
- http://sjatupornservices.com/file_media/file_image/file/8074429903.pdfIn PDF document text
- https://www.nitm.ac.in/nitmeghalaya/ckfinder/userfiles/files/60720189777.pdfIn PDF document text
- http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/16227a4feced2f---79439375275.pdfIn PDF document text
- http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621a935e6efcb---79850352282.pdfIn PDF document text
- https://huk-machine.com/userfiles/file/27643790659.pdfIn PDF document text
- https://gatia.kone-equicentrum.cz/userfiles/files/wivitafakevikozewojo.pdfIn PDF document text
- https://smartcirclegroup.com/userfiles/file/72800885923.pdfIn PDF document text
- http://internationalelectric.ru/test/sites/default/files/file/38062290784.pdfIn PDF document text
- http://mpti.ru/userfiles/file/fasojizanopemitod.pdfIn PDF document text
- http://vanphongphambni.com/webroot/img/files/74433817826.pdfIn PDF document text
- http://davidhammerstein.org/ckfinder/userfiles/files/kidulobifiruxoloputu.pdfIn PDF document text
- http://bodybybodyology.com/ckfinder/userfiles/files/92342656013.pdfIn PDF document text
- http://armoire-atex.com/js/kcfinder/upload/files/pokewokaguwupava.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0004ae21.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4AE21	1696 bytes
SHA-256: `28c5bcedffb0f63c0f18ed07264126f7c833899b916de9a351f9850be7cb6bae`
`font_01_sfnt_off0004b631.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4B631	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off0004ce48.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4CE48	10660 bytes
SHA-256: `d599bc7a48160703bf7dafa79bc295769e863cd4e486e7f48e5589fec83cdb2e`
`font_03_sfnt_off0004e687.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4E687	20272 bytes
SHA-256: `c0d46a0f568f772ab16ea6c8b18a4e33bef8566ff21d936976f9b9068a08ac1c`

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