PDF malware analysis — malicious · 6fcf03c491189bdb

MALICIOUS

PDF

77.9 KB Created: 2021-06-28 08:17:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24

MD5: feb03578c552433a7492ef61c612d35f SHA-1: eba4861778ee657b7290544dd648e76fe4b9fc70 SHA-256: 6fcf03c491189bdb8d4406900e5ced01b8b83b77430b57499c8db13b3050fd35

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The sample was identified as malicious by ClamAV and an ML classifier, with heuristics indicating it functions as a link farm. Multiple URLs point to compromised WordPress sites and disposable hosting, suggesting an attempt to distribute phishing or malware content. The PDF's structure and embedded URLs strongly indicate a malicious intent to redirect users to external, potentially harmful, sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9953

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://cpspcb.com/uploads/files/powowigurotekig.pdf In PDF document text
- https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/77a82a8e77ecb3b8dc43745bf7049c7e/gufakemadi.pdfIn PDF document text
- https://arvikabc.com/images/uploadedimages/file/7254521634.pdfIn PDF document text
- https://roeveragri.ac.in/wp-content/plugins/super-forms/uploads/php/files/f0d4b3bf82b316c0a226ed2a13ddb04b/vobevolazodovibakusez.pdfIn PDF document text
- http://baschin-heizung.com/meineBilderAlbertGrundschule/file/medenifabazige.pdfIn PDF document text
- http://ever-pioneer.com/upload/files/pobupexadewowep.pdfIn PDF document text
- http://www.pzkexie.com/up_files/file/pafilinokepafenamenimawiw.pdfIn PDF document text
- https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a716c57a9fa---9246085156.pdfIn PDF document text
- http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/16089ad79d95f7---jetetaduxemokubok.pdfIn PDF document text
- https://tuabogadoangel.com/wp-content/plugins/super-forms/uploads/php/files/9cf67dff1ee50af3acdb8a0023766896/27458179736.pdfIn PDF document text
- http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb236cc793a---xawuvegetotuxogemunuxoxun.pdfIn PDF document text
- http://mevlanaasm.com/resimler/files/11687314566.pdfIn PDF document text
- https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/6ad8c1a92d3f7290615962a94588e794/selusanugipolubijuvexu.pdfIn PDF document text
- https://hmanagement.net/userfiles/file/61591408492.pdfIn PDF document text
- https://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/f32c18c783f64880ba8de8c681b181c8/tefodogaw.pdfIn PDF document text
- https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c61698f1014---98684972327.pdfIn PDF document text
- http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/160ac5ec3d0e6e---9564692335.pdfIn PDF document text
- http://phenix-security.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16082d048b1b6c---rasax.pdfIn PDF document text
- http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160968a418c254---52118769919.pdfIn PDF document text
- http://dirabrealtors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d1dc51758fa---46903574619.pdfIn PDF document text
- https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160737c389b46a---30956724517.pdfIn PDF document text
- https://gbeequestriansurfaces.com/wp-content/plugins/super-forms/uploads/php/files/ijo70ibr2mdqdfd82r3kt5fca4/75838027559.pdfIn PDF document text
- https://www.accidentinjuryalbuquerque.com/wp-content/plugins/super-forms/uploads/php/files/acm7pgsp039oog0630dksud3id/vovatozukujusofume.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=remove+a+page+from+pdf+filePDF 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_off0000ce35.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCE35	10580 bytes
SHA-256: `d4f6d90adffd124b29751e613dc2cbff019bc9da9de94accc6f19cd3b1e265cf`
`font_01_sfnt_off0000e61c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE61C	16916 bytes
SHA-256: `b21b56ac9a02d8afd4b6dbbd9bd123b511bdd9609f19ce37e9d1360ca73c5359`
`font_02_sfnt_off0001124b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1124B	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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