PDF malware analysis — malicious · 4beae890a9d2a8d4

MALICIOUS

PDF

87.2 KB Created: 2021-06-29 13:29:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05

MD5: 7e6d40c70b2516129889bf4f6d433666 SHA-1: 8a53362b142f6801050b1b946b28a9670e7136ed SHA-256: 4beae890a9d2a8d4f0f2ca6ff7f72af6359233999db8f9188653b77467cb5a7d

164 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution

The PDF contains embedded JavaScript and multiple links to compromised websites, indicating an attempt to exploit vulnerabilities and download further malicious content. ClamAV detection and ML classification strongly suggest malicious intent. The presence of a link farm on disposable hosting further supports a malicious campaign.

Machine Learning

Nyx PDF Classifier malicious score 0.9835

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
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.
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 http://canadanur.com/resimler/files/19847039653.pdf In PDF document text
- http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/160aa37b0a0b39---1833195572.pdfIn PDF document text
- http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/1609ed34c41e8b---32294046047.pdfIn PDF document text
- http://argentum.com/wp-content/plugins/super-forms/uploads/php/files/fn4e6u56og16daehjel1jbedm2/98748446976.pdfIn PDF document text
- https://recapress.com/ckfinder/userfiles/files/zedajoxatifomivigewes.pdfIn PDF document text
- https://vate-tire.ru/wp-content/plugins/super-forms/uploads/php/files/4295bd2f2af033b94f6dcc6c36365470/wisuwirabetigarixefur.pdfIn PDF document text
- https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/160816e2e7bb09---52446257925.pdfIn PDF document text
- https://gyandeepjkss.org/userfiles/file/93328319936.pdfIn PDF document text
- http://xn--80aafbkbafwdti1ahihccrg.xn--p1ai/pict/file/52839102360.pdfIn PDF document text
- http://nhsclassof77.com/clients/c/ca/caa0b9827732345dad94809623212052/File/9664019845.pdfIn PDF document text
- http://bronia.org/userfiles/file/92700715807.pdfIn PDF document text
- http://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/d1cf760253877578d7bce16ed4c0991d/fimev.pdfIn PDF document text
- http://energo-winstal.pl/userfiles/file/24137195886.pdfIn PDF document text
- https://alianzatours.com/imagenes/file/45955303344.pdfIn PDF document text
- https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/160801adf7ad6c---32987021233.pdfIn PDF document text
- http://arserwood.com/js/fckeditor/editor/filemanager/connectors/php/connector.php/upfiles/file/210505224042988748g6l8hi.pdfIn PDF document text
- https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/3d804bcfc24ffea4ecc8cc908b295336/77520691197.pdfIn PDF document text
- http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/bc8dbc5a1c3a48397cccf506d1c6ccdf/58373842815.pdfIn PDF document text
- https://www.partyshuttlebus.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a9741a62b7c---77049779723.pdfIn PDF document text
- http://dansensvenner.dk/imagesfile///nitowunelolutubusude.pdfIn PDF document text
- https://www.kalirich.com/wp-content/plugins/super-forms/uploads/php/files/fjkeakfsv5ln9v1vd2v8pu5ap6/41469376980.pdfIn PDF document text
- http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac664ab39cb---60667054323.pdfIn PDF document text
- https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/7a7ac9084e47549e72e540d27ef874bd/28220078709.pdfIn PDF document text
- https://carrieres-pierre.com/userfiles/file/narez.pdfIn PDF document text
- http://kayamedbursa.com/userfiles/file/8782404319.pdfIn PDF document text
- https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607eb1493205b---48173549764.pdfIn PDF document text
- https://roadtoring.com/wp-content/plugins/super-forms/uploads/php/files/eb0d713f6c60c9adc5750abe00415495/50390657056.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=develop+psychic+abilities+pdfPDF 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_off0000f2ed.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF2ED	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off00010b04.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10B04	10836 bytes
SHA-256: `e12f25d163f1c896c9bbfe7cdeb42047a00d0b11a966ecca4ba069c69c391d3f`
`font_02_sfnt_off000123f8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x123F8	16876 bytes
SHA-256: `6e381030d42c2e5ca04a001be2dfa8edfaf822be3c04ec2954916cb53bbf4ae3`

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