PDF malware analysis — malicious · d6a861383a5573b9

MALICIOUS

PDF

150.2 KB Created: 2021-09-04 12:53:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: 60e7fad97b0f7e91a3adc72b2427012d SHA-1: fa6b424ff7765bbf054985e41c7e3a995ae13f16 SHA-256: d6a861383a5573b9b6cce2e695711015d6e84716b22d73699f966bb0c1b9dfd1

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains numerous embedded URLs that form a link farm, many pointing to compromised CMS upload directories. The primary purpose appears to be directing users to potentially malicious external sites, likely for phishing or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.9761

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://huntic.ru/uplcv?utm_term=horus+heresy+shattered+legions+pdf PDF link annotation
- https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d45da9d7456---7093615075.pdfIn PDF document text
- http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/16105734a24a26---94931251641.pdfIn PDF document text
- https://xulynuocphangiathinh.vn/images/pic/file/95403162995.pdfIn PDF document text
- http://krajinar.cz/soubory/files/76736884556.pdfIn PDF document text
- https://catequesisnavarra.org/guiarte_userfiles/files/44637748737.pdfIn PDF document text
- http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5ab8ec7c1e---17772695085.pdfIn PDF document text
- https://realestateconnect.biz/wp-content/plugins/super-forms/uploads/php/files/u373calqh3emg4119ig6r04361/siripijajamefibawut.pdfIn PDF document text
- https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/qhsni4c5g861n7be2lte1fdk0p/tagimedorigulawerabase.pdfIn PDF document text
- http://www.heksan.com.pl/file/70831004720.pdfIn PDF document text
- https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/160f894bd4a855---jorafosogovobuxavawaxux.pdfIn PDF document text
- http://gurukripapublicschool.com/userfiles/file/visulasunizoberudagazag.pdfIn PDF document text
- https://intrigantka.ru/images/userfiles/file/86027611543.pdfIn PDF document text
- http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607edf7786d53---1628065540.pdfIn PDF document text
- http://cainghienbinhduong.com/uploads/userfiles/file/wuzik.pdfIn PDF document text
- https://fiscconsulting.com/userfiles/file/70614477940.pdfIn PDF document text
- http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/160dbd26bb845a---fawurazo.pdfIn PDF document text
- http://impressivetravelvietnam.com/upload/files/84085958864.pdfIn PDF document text
- https://www.mysmilestudios.com/wp-content/plugins/super-forms/uploads/php/files/2ecc30683da7e51c4c89e8684076a2f2/14443978226.pdfIn PDF document text
- http://vilaportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160db72abb00fa---1466323192.pdfIn PDF document text
- https://tutorlookup.com/ckeditor/ckfinder/userfiles/files/fovujamigegunefaveti.pdfIn PDF document text
- https://shipnhanh247.vn/asset/files/ratuzupafejuwa.pdfIn PDF document text
- http://kesifveotesi.com/files/31056270775.pdfIn PDF document text
- https://pavillonwohlen.ch/userfiles/files/migiwoxepirasim.pdfIn PDF document text
- http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dadd924d834---38679657136.pdfIn PDF document text
- https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/dfd56067655731b10bc22ca1048a1824/kavowavos.pdfIn PDF document text
- https://pluviaterra.mx/wp-content/plugins/super-forms/uploads/php/files/dcfdfce6f7b498a94ed14584d65556c3/40789176080.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_off0001e949.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1E949	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off00020160.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x20160	10980 bytes
SHA-256: `95ea6d26f3839d921c4970368462f338a243e1b3fd2c6bd15c3c55b11dff1acd`
`font_02_sfnt_off00021a93.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x21A93	18620 bytes
SHA-256: `40e796f28b5acb28405ca5ab4821521b2c57a46ad16dfd2dda1d4ba128381650`

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