PDF malware analysis — malicious · b60757ad047783ab

MALICIOUS

PDF

90.3 KB Created: 2021-06-28 05:42:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14

MD5: deeabc6c656e3ed6f22b025f0921f135 SHA-1: 6a5fb3500c4ee7e6316f5e904aaf0c5c8964f649 SHA-256: b60757ad047783abc747488876dc56914f9cdf771d4ab562ef7fa2d10cb91d4f

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many pointing to compromised WordPress sites, suggesting it functions as a link farm. These links likely lead to phishing pages or further malware downloads. The document body is heavily obfuscated and unreadable, providing no direct user-facing content.

Machine Learning

Nyx PDF Classifier malicious score 0.9942

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://philabc.ru/uplcv?utm_term=2021+cls+450+coupe PDF link annotation
- http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/160982b5c26ac7---68853861281.pdfIn PDF document text
- https://cwlighting.com/wp-content/plugins/super-forms/uploads/php/files/9b11dcaf6f653676f8c4fc8818d1651e/gopufaz.pdfIn PDF document text
- http://www.photobreak.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609054201b04f---fipozid.pdfIn PDF document text
- https://sumangold.net.vn/wp-content/plugins/super-forms/uploads/php/files/hi1ep22499brablksgq2qkv71e/todipusibanozolomalaf.pdfIn PDF document text
- https://www.indee-r.fr/wp-content/plugins/super-forms/uploads/php/files/9d52daa3203ea7b363188c60fc4e78b4/69538102615.pdfIn PDF document text
- http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2942091cc0---lafiroraganexojom.pdfIn PDF document text
- https://athensviptour.com/wp-content/plugins/super-forms/uploads/php/files/e06db79fab8e95b6dac3ca87d1c9177a/gupenosefowitotosibabiv.pdfIn PDF document text
- https://www.travelticket.com.au/wp-content/plugins/super-forms/uploads/php/files/hcjb4mujrjcj0e7fpm1t8nie38/90909175732.pdfIn PDF document text
- https://securitydm.rs/slicice/file/854895633.pdfIn PDF document text
- https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/d4cf510f58be62b7f3911175157020f9/wokemurasuzivimopipelome.pdfIn PDF document text
- http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/1609452241405b---sigunoguturifedoronomugu.pdfIn PDF document text
- http://www.everhouse.lt/wp-content/plugins/formcraft/file-upload/server/content/files/16081c4c7f059f---39980626912.pdfIn PDF document text
- https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/2ba46bdb6b09c74dcf289ba45d3af7e6/vizegipi.pdfIn PDF document text
- http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/160aeb0362d9ed---33056413053.pdfIn PDF document text
- http://agnieszkapawlik.com/userfiles/file/95905097292.pdfIn PDF document text
- http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/16084075329e4b---20575628601.pdfIn PDF document text
- http://unnatiwelfareorganization.com/ckfinder/userfiles/files/renofefigilakiwukijanew.pdfIn PDF document text
- http://www.atrium-tuiles.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609743c923773---19639516685.pdfIn PDF document text
- https://vigiweb.cl/dinamicos/files/file/12554461427.pdfIn PDF document text
- http://allasclub.com/campannas/file/danoxeragovunadoxupo.pdfIn PDF document text
- http://northmarking.com/userfiles/files/feretilobowaduketun.pdfIn PDF document text
- https://charlesstreetvideo.com/userfiles/file/varofupukajatobaxa.pdfIn PDF document text
- https://beachesbrewing.com/wp-content/plugins/super-forms/uploads/php/files/8d2f0bf00c506845208f4175d0fd705e/26818439371.pdfIn PDF document text
- http://youngshiny.com/userfiles/file/1623644382.pdfIn PDF document text
- http://angelescare.com/userfiles/file/13794584232.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_off0000ff03.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFF03	10320 bytes
SHA-256: `c05599538c6800adb3baac3f0103cca5cce49346ded6ddc3e7e6b41471a64639`
`font_01_sfnt_off0001168c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1168C	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00012e9e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12E9E	16856 bytes
SHA-256: `5bd318bfbb6c702c763473a126bba160dc9b35474d67e8a0c9c277828e7f92b6`

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