PDF malware analysis — malicious · a334ed448298ab41

MALICIOUS

PDF

85.6 KB Created: 2021-08-29 13:59:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31

MD5: 997aef9ecb5ab4ccd54cd0397272e474 SHA-1: ce4610e7e6852e33b9851484ae8c0b8d8730a80e SHA-256: a334ed448298ab415a176d94781f51565a454c53a5157b77a74516de3c894aee

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating it likely exploits a vulnerability or contains malicious content. It contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting a phishing or malware distribution campaign. The document body is unreadable, but the heuristics strongly indicate a link farm designed to redirect users to malicious destinations.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

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://crysiq.ru/uplcv?utm_term=creating+shared+value+pdf PDF link annotation
- https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/89a031f68fc86306f207e3cbe89debef/fepetapopidezu.pdfIn PDF document text
- http://daotaoyduoc.org/wp-content/plugins/super-forms/uploads/php/files/udl2fbpjgtefroim92umnej784/terosagirofebewapul.pdfIn PDF document text
- https://chocoinmobiliario.com/wp-content/plugins/super-forms/uploads/php/files/546fe574510722b8692fd300860e32dc/biwopub.pdfIn PDF document text
- https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/160d48cf187205---volopamufedezo.pdfIn PDF document text
- https://twr1115.net/files/fckeditor/file/94061556921.pdfIn PDF document text
- http://itcck.org/upload/editor/file/38166892198.pdfIn PDF document text
- http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/b8bb37e75314db0f99d724514e840229/95207247937.pdfIn PDF document text
- http://primaneighbors.com/userimages/55564752029.pdfIn PDF document text
- http://www.suffaheducation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c171da8d9c2---57921389270.pdfIn PDF document text
- https://abugfreemind.com/userfiles/file/xetejas.pdfIn PDF document text
- http://pytextiles.com/userfiles/file/85570572281.pdfIn PDF document text
- https://stmpallet.com/ckfinder/userfiles/files/78407128433.pdfIn PDF document text
- http://www.tobywells.org/media/fckdir/file/71692692902.pdfIn PDF document text
- http://www.pantonerestauri.com/ckfinder/userfiles/files/musexigimiva.pdfIn PDF document text
- https://churchofgodinjamaica.org/app/webroot/files/90687563022.pdfIn PDF document text
- https://orldoc.ch/wp-content/plugins/super-forms/uploads/php/files/0jvbv1s5cvc44cvfocfri78nc0/28952559090.pdfIn PDF document text
- https://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/21b0f62910dd0cef13230bb51baab629/tuzavinupodadibebumejikaj.pdfIn PDF document text
- http://pcccmiennam.com/media/ftp/file/sawijigipobeb.pdfIn PDF document text
- http://vanillasky-ch.com/images/files/50787403571.pdfIn PDF document text
- http://kaupa.cz/userfiles/file/bijenagonoxunebe.pdfIn PDF document text
- http://taiyoaquris.cn/upload/userfiles/files/20210601210459.pdfIn PDF document text
- https://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/35ef626edd14f1c2ccf2dbd88c07839a/6687725902.pdfIn PDF document text
- https://smartcrm.cloud/upload/files/19947243842.pdfIn PDF document text
- http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/b6c161bf68304d18d4808dbc0ce24469/96125519212.pdfIn PDF document text
- http://datacomsystems.cz/userfiles/file/guduled.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_off0000e789.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE789	18328 bytes
SHA-256: `faded217f6a5e6196300f7b71af773aaf7cca6cf272c7ca157ba3809df7ea73d`
`font_01_sfnt_off00011768.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11768	10856 bytes
SHA-256: `b3f62f83d6afb5ee1f480f26ffaf5d7dddf07977cd95c83c051961189aa9591d`
`font_02_sfnt_off00013037.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13037	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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