PDF malware analysis — malicious · 24f1a8c6c0ad1fde

MALICIOUS

PDF

82.4 KB Created: 2021-09-07 13:28:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12

MD5: 0763a7d204a7413bb7f094a92d9ed5d9 SHA-1: 632482e5e9c0cedabf23c01b804527319b62fb10 SHA-256: 24f1a8c6c0ad1fde0f54360a360a98305ea4e40bcbbbef0a163e7eb979e53964

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The heuristics indicate that the PDF contains a link farm pointing to compromised CMS uploads and disposable hosting, suggesting a phishing or SEO poisoning campaign. The embedded URLs, while some are marked benign, are part of a larger pattern of redirection to potentially malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9917

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 http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a3498a54f7f---manelejavonoxawafo.pdf In PDF document text
- https://ipssecurityconsultants.com/ckfinder/userfiles/files/nelalotagelenusoxud.pdfIn PDF document text
- http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d5cc0c4f7b---jedegelunofexatejixesi.pdfIn PDF document text
- https://teenvolunteer.org/wp-content/plugins/super-forms/uploads/php/files/2d2c6a2486cdfe12cf7a032be668b469/rumozejuwogowadeba.pdfIn PDF document text
- https://alakharia.com/public_html/userfiles/file/sekesowub.pdfIn PDF document text
- https://acgroupenterprise.com/userfiles/file/87011991396.pdfIn PDF document text
- http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160bcea6a2600e---surukegovuluwonajozozoget.pdfIn PDF document text
- http://cdseoulps.com/uploadfile/fckeditor/file/8625887707.pdfIn PDF document text
- https://asthasupermarket.com/userfiles/file/powuvefifoxe.pdfIn PDF document text
- http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070902e7def6---duvemujer.pdfIn PDF document text
- http://smenergy.kr/uploaded/file/18345366611aea6c430ad.pdfIn PDF document text
- http://aibasavar.edu.bd/app/webroot/ckfinder/userfiles/files/rowetudapoleju.pdfIn PDF document text
- https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/f3ad3386adea61cb6e474806bd2ddfae/nonimenem.pdfIn PDF document text
- https://goodluckfishing.com/ckfinder/userfiles/files/simapewi.pdfIn PDF document text
- http://orgue-chantepie.info/FCKeditor/upload/file/14906436717.pdfIn PDF document text
- https://tirthmobile.com/wp-content/plugins/super-forms/uploads/php/files/1cr4dlb80s9kllo4q3brbn6um0/21644642905.pdfIn PDF document text
- https://singaporeroadshow.com/wp-content/plugins/super-forms/uploads/php/files/f7de1da381361be1c1e4d866cf5eb997/71650927635.pdfIn PDF document text
- https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/16090df4768be1---12387503210.pdfIn PDF document text
- http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1611a1b55cdaef---89512740794.pdfIn PDF document text
- http://bloemenwinkelindex.nl/images/uploads/96893270507.pdfIn PDF document text
- https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/tm82i62ker4jb52tvq035bkh3c/wajezurimawusilafojelo.pdfIn PDF document text
- https://igruppe.no/ckfinder/userfiles//files/ribitilaze.pdfIn PDF document text
- https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/a6rtr04q63vb7m18lr1shaco51/tojuxagubefegu.pdfIn PDF document text
- http://gameometria.com/assets/ckfinder/core/connector/php/uploads/files/dazamatawis.pdfIn PDF document text
- http://shmountaineering.co.uk/wp-content/plugins/super-forms/uploads/php/files/g600k7umqofr41kfkg6cj30ap6/laposagojedakupatov.pdfIn PDF document text
- https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607cf58fe5e3a---5397344320.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=modificare+un+pdf+in+word+con+macPDF 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_off0000dbc6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDBC6	10648 bytes
SHA-256: `2fb57d6864ce67ec570ebc5dfcc0edb4c6b5a4c3db400deb7402b35559068fcd`
`font_01_sfnt_off0000f426.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF426	17528 bytes
SHA-256: `db214384ce6f361fdd11f2736ffd50fdda482d7d525de513b87a956eccad89ad`
`font_02_sfnt_off00012207.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12207	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

Open this report in the interactive analyzer, or submit your own file for analysis.