PDF malware analysis — malicious · e985eead8fe9345b

MALICIOUS

PDF

79.8 KB Created: 2021-09-04 21:51:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12

MD5: 397f9ead246cc1413a37aee3f4e54366 SHA-1: 3c03c088349f2c2c2d7aebbb2df51e0bbae3040a SHA-256: e985eead8fe9345bb8b093d3ae7ff17573c56c6bebc8e1e59825832e21bc9fc8

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was identified as malicious by multiple heuristics and an ML classifier, with ClamAV detecting it as a phishing trojan. The file functions as a link farm, containing numerous URLs pointing to various websites, many of which appear to be compromised CMS uploads. These links are likely intended to lead users to phishing pages or download further malicious content.

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 https://cructi.ru/uplcv?utm_term=paheliyan+in+urdu+pdf+download PDF link annotation
- http://improntediteatro.it/userfiles/files/zozikopibabunoxaxumusiz.pdfIn PDF document text
- https://kassa-evotor.ru/wp-content/plugins/super-forms/uploads/php/files/rir9kcmbb99o5utc1lqoj6u98o/nezoni.pdfIn PDF document text
- https://floridaholidayplanner.com/wp-content/plugins/super-forms/uploads/php/files/0db44d31684996db892c8a886c6d78da/95940410407.pdfIn PDF document text
- http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160890985edb30---15705455326.pdfIn PDF document text
- https://holyfamilyhospitals.com/ckfinder/userfiles/files/13547192943.pdfIn PDF document text
- http://ankurgroups.com/userfiles/file/zukufagiwu.pdfIn PDF document text
- https://tselectromechanical.com/uploads/CKfiles/files/86712921028.pdfIn PDF document text
- http://brighterhealthcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/1m16vbicmsm1gvc7bsskrcu6u3/44465661942.pdfIn PDF document text
- http://miamiwars.pl/wp-content/plugins/super-forms/uploads/php/files/94dff408fe3eb638cb248e502c0711ec/tovuvadonerarezanis.pdfIn PDF document text
- http://dajuicebarus.com/uploads/files/79064861947.pdfIn PDF document text
- https://tomorrowhubs.com/upload/users/files/2815122556.pdfIn PDF document text
- http://self119.net/upload/userfiles/2021/07/files/210728003147.pdfIn PDF document text
- https://wpsqld.com.au/wp-content/plugins/super-forms/uploads/php/files/a5eba088727e1b13b2b8e050e92baadb/wudomedofalemi.pdfIn PDF document text
- http://jrpst.pl/userfiles/file/10178471712.pdfIn PDF document text
- https://www.arphplumbing.co.uk/wp-content/plugins/super-forms/uploads/php/files/lflcep26m83ichgbihm9jvh2ge/medudelovaralubuzamozes.pdfIn PDF document text
- https://bulgariapools.com/contents/files/86537715668.pdfIn PDF document text
- https://catherinehourihan.art/wp-content/plugins/super-forms/uploads/php/files/9c15b66ae188b4ce0a3e4645e5b61340/3468732161.pdfIn PDF document text
- https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/b43fb0ce250cc56d16672742bab03035/3147727806.pdfIn PDF document text
- https://nurea.se/currency/userfiles/file/58060593353.pdfIn PDF document text
- http://sicompk.com/survey/userfiles/files/gusivugixebogapibekavanu.pdfIn PDF document text
- https://dixietemporarystorage.com/wp-content/plugins/super-forms/uploads/php/files/c242bfdad070e4f43c8c06fa024dfe0a/83967988728.pdfIn PDF document text
- http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606f56de2c2c8---nobetakabizesobewagukinu.pdfIn PDF document text
- http://boldogelet.hu/media/pumixav.pdfIn PDF document text
- https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607801812bb8e---wipimamotopikerawulil.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_off0000d3c3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD3C3	10628 bytes
SHA-256: `01acd1bfbb428cfd10e946d143ed0b2a5a1d6eeafd28ef270775cda38ff4a229`
`font_01_sfnt_off0000ebfe.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEBFE	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00010410.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10410	17304 bytes
SHA-256: `fece74cafa812ac344961fd3a246996a566edd08b0529a4ba7ca7a2e75f16114`

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