PDF malware analysis — malicious · d15134978d7a007c

MALICIOUS

PDF

92.4 KB Created: 2021-09-01 20:35:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24

MD5: 0459baa1b11e826b44078e187de51451 SHA-1: 7b1ac26bbdbea7a5fab18b6e8391c4db9557bbdb SHA-256: d15134978d7a007c1a844e48e783be084c083fcd9e31d0b44bbd1d2c700e5f69

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links, many pointing to compromised WordPress sites and disposable hosting, suggesting it functions as a link farm for phishing or malware distribution. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or trojan delivery via these external links.

Machine Learning

Nyx PDF Classifier malicious score 0.9951

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=77+meaning+bible PDF link annotation
- http://satyamtracparts.com/userfiles/file/59587285344.pdfIn PDF document text
- https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/7cd19c799a6e2187f3b596d2bb65ded1/sojibojotizur.pdfIn PDF document text
- http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/160828a78541e7---42761206416.pdfIn PDF document text
- https://bhavanarayanaswamy.org/userfiles/file/22291268056.pdfIn PDF document text
- https://mudraconsultancy.com/uploads/files/20328670017.pdfIn PDF document text
- https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa0e2f16f37---fupumetosip.pdfIn PDF document text
- https://toolsatool.com/userfiles/files/58058042052.pdfIn PDF document text
- http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/160786cf238590---vawewuzigividumorowiga.pdfIn PDF document text
- http://aiswaryamatrimonials.com/fck_uploads/file/73330909623.pdfIn PDF document text
- http://angeladaniel.eu/uploads/files/18093542611.pdfIn PDF document text
- http://wwpokebar.com/uploads/files/modon.pdfIn PDF document text
- https://beautyreviveshop.com/newerac2c/userfiles/file/pojilap.pdfIn PDF document text
- http://xn--12cbg9dihj7egda2g6a7dceb1d2cp4nvgf4f.com/datas/files/jubewodudapumekag.pdfIn PDF document text
- http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160f063b1c65ac---85098223003.pdfIn PDF document text
- http://zeguvietnam.com/uploads/ckfinder/files/ziwudefavajobokageribem.pdfIn PDF document text
- https://cplastik.com/data/cms/file/42383385965.pdfIn PDF document text
- http://kingkady.com/uploadfile/files/sodaweki.pdfIn PDF document text
- https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607270484053a---32291507599.pdfIn PDF document text
- https://zoomkish.com/basefile/zoomkishcom/files/takowijujar.pdfIn PDF document text
- http://thejosephinebryantfamily.com/clients/48776/File/kavegutifupegebudu.pdfIn PDF document text
- https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/16116422eb4f6e---rijaxepat.pdfIn PDF document text
- https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/e7795b42ab1c9abf19e878646d1203de/doditolukilorejov.pdfIn PDF document text
- http://trovas.com/userimages/sarinoregagujevovexeror.pdfIn PDF document text
- http://www.tramag.pl/upload/file/31542524665.pdfIn PDF document text
- http://constantemail.com/userfiles/file/162688190840483563412.pdfIn PDF document text
- https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/1t9je8s611jej45ogovm6fjmfp/xizol.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_off000104fb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x104FB	18144 bytes
SHA-256: `7e42b771d0ea02f7660793b8b269cfa9ffcbac3f06505952debb587170e153ad`
`font_01_sfnt_off0001338d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1338D	10056 bytes
SHA-256: `a700033facc57621a4a4883e6cbf8fc4fc662f63879bed41afe3f6f4d6af827a`
`font_02_sfnt_off000149d4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x149D4	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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