PDF malware analysis — malicious · d9f8dcbac142bc29

MALICIOUS

PDF

166.0 KB Created: 2021-07-07 00:35:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15

MD5: f4639d352363e7a294aebbf18271cd7c SHA-1: 4f5c6dd662feb64865cc2c47dbf222af56c807aa SHA-256: d9f8dcbac142bc29034f14235a237dd9731a058c6d4f2caa86982875aa1c489d

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links pointing to compromised WordPress upload directories and other disposable hosting sites, indicating a link farm designed to distribute malicious content. ClamAV detection and ML classification confirm its malicious nature, likely serving as a lure for phishing or malware downloads.

Machine Learning

Nyx PDF Classifier malicious score 0.9735

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://allytemp.ru/uplcv?utm_term=overview+of+entrepreneurship+know PDF link annotation
- https://roofmed.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160bc4016c3e66---gabirepoxuxabudibu.pdfIn PDF document text
- https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/b9042564d95eca10b97b53354a90baaa/kozatolikuzitixojuruf.pdfIn PDF document text
- http://dekoblickfang.de/userfiles/file/6124855547.pdfIn PDF document text
- https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab5ab74a565---14619570058.pdfIn PDF document text
- http://greece-ex.com/images/blog//file/wegedotiv.pdfIn PDF document text
- http://donaldbermanmaimonidesgolf2020.com/clients/0/0d/0d43fbb8ff91cab41fa1b056c0d912a9/File/31359729998.pdfIn PDF document text
- http://xn--42-6kcdlkbomh7beggito5p.xn--p1ai/userfiles/file/detuluragozejewivodowek.pdfIn PDF document text
- http://bright-mineral.com/uploadfile/file/2021062813012094.pdfIn PDF document text
- http://microcement.ua/userfiles/file/90395897807.pdfIn PDF document text
- https://englewoodgrassfarm.com/wp-content/plugins/super-forms/uploads/php/files/1c890af48d55c9917e631175e6e82143/jamopitajufivitafawilezuj.pdfIn PDF document text
- https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/16072be38dc55c---jumojupaxozegazozamumoviv.pdfIn PDF document text
- http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c43d8507a0---83165723631.pdfIn PDF document text
- https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608cb40a92ef3---80617487049.pdfIn PDF document text
- http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1609ff495a3abe---zatidejosisuzotuwifaxumun.pdfIn PDF document text
- https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/fe28q0rq4b7ol50id790s3uca8/14466903200.pdfIn PDF document text
- https://www.qlsny.com/wp-content/plugins/super-forms/uploads/php/files/864bb10a8bed4a93cdbb72f0776fdc0e/budej.pdfIn PDF document text
- http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/16076048bc06dc---60457146411.pdfIn PDF document text
- https://allcreaturesinc.com/files/files/10183497471.pdfIn PDF document text
- https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609a43d130905---67477805734.pdfIn PDF document text
- https://ecobox.eng.br/wp-content/plugins/super-forms/uploads/php/files/rggmchbhfb0qjojuiqhsgrm1m3/1757173351.pdfIn PDF document text
- https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b159d0b3106---niwuxivutepixexan.pdfIn PDF document text
- https://fastcomputer.vn/wp-content/plugins/super-forms/uploads/php/files/49584d993c8e4424319d09280d291d05/98867919163.pdfIn PDF document text
- http://chrislahoda.ca/userfiles/file/29080024528.pdfIn PDF document text
- https://www.vibrationmonitoring.asia/wp-content/plugins/formcraft/file-upload/server/content/files/160b055e6213dd---finoteratutalobebixosamov.pdfIn PDF document text
- http://suamayin.biz/userfiles/file/31445150248.pdfIn PDF document text
- http://yaqeen-eg.com/userfiles/file/womamufafumepumo.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_off00022303.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x22303	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off00023b1a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x23B1A	10616 bytes
SHA-256: `8081e9404ccabc1fcd5a349f7381c60e46dcb229fc367c3b058c7a19fd7810d7`
`font_02_sfnt_off00025369.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x25369	21152 bytes
SHA-256: `463cfffc6e14fb68bf56b79a9c7e49b8a67f611efb25f83a0c318d2b5f0f6a01`

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