PDF malware analysis — malicious · 29b1952fa6171d2d

MALICIOUS

PDF

86.7 KB Created: 2021-09-04 20:28:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12

MD5: 1cf00d10f5f9a2d3716e9649aed86bbe SHA-1: ec66bfd19fea02874eee28b8338ae14772b8d71f SHA-256: 29b1952fa6171d2d28d411805b93254293bff5ad2c1bf16bbaf9970dda913f10

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to external websites, many of which are hosted on compromised WordPress installations or disposable domains, suggesting a link farm designed to redirect users to malicious content. The file's structure and the presence of these links indicate an attempt to exploit users through deceptive content, likely leading to credential theft or further malware infection.

Machine Learning

Nyx PDF Classifier malicious score 0.9948

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://oniceh.ru/uplcv?utm_term=variante+bac+2009+m1+rezolvate+pdf PDF link annotation
- https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/993e99cb1768a2b53c9d13a4e84a1e8f/walotajijuvuguvale.pdfIn PDF document text
- https://www.neosynapses.com/wp-content/plugins/super-forms/uploads/php/files/6t174rakvp688tt2gje7hbn9ht/46183377212.pdfIn PDF document text
- http://quangcongluc.com/upload/files/risofutejikubixapu.pdfIn PDF document text
- http://saconsultancy.com/userfiles/file/33286222800.pdfIn PDF document text
- http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/161239f4b7c493---95725030576.pdfIn PDF document text
- https://uleiuri.ro/userfiles/file/tupigotuwakapadinirosita.pdfIn PDF document text
- https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160ee3bf4dc2cd---12090604718.pdfIn PDF document text
- http://nawooelcs.com/upload/userfiles/2021/08/files/210807191155.pdfIn PDF document text
- https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b3746d04f13---41779867758.pdfIn PDF document text
- http://assushop.com/userfiles/assushop.com/file/delevubusuneno.pdfIn PDF document text
- https://catherinehourihan.art/wp-content/plugins/super-forms/uploads/php/files/5b47bdba9488738890557e94baf35391/30387053316.pdfIn PDF document text
- http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160da373e6696c---zivosajo.pdfIn PDF document text
- http://www.moteco.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160914c0041c8c---wudugusumatu.pdfIn PDF document text
- https://www.rekalibracija.com/wp-content/plugins/super-forms/uploads/php/files/03d8236b467e2871a67f9cbfcd2a28d0/gokuwolek.pdfIn PDF document text
- https://www.hkfew.org.hk/ckfinder/userfiles/files/vupodup.pdfIn PDF document text
- http://casaalu.com/luutru/files/saxalizukoj.pdfIn PDF document text
- https://anfauglir.com/images/file/pobalez.pdfIn PDF document text
- http://hwayinn.com/image/files/20210723_044714.pdfIn PDF document text
- http://baoveantam.org/upload/files/33837076972.pdfIn PDF document text
- http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d713e89253a---zesujakedowaji.pdfIn PDF document text
- https://foulardfotografando.it/file/77570969393.pdfIn PDF document text
- https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/fa9070a4ddb1e348d54143c22b8c922a/21244800647.pdfIn PDF document text
- http://merwepizza.com/upload/file/kolagiwelek.pdfIn PDF document text
- https://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/ut1j7dmd4ttns0nraui9sst0g6/48212698967.pdfIn PDF document text
- http://noithatmfc.com/media/ftp/file/67892217717.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d70b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD70B	16144 bytes
SHA-256: `319c1d6b5a9dfe45ef2c311a2d5ba00a192ff2e3c7a2103ac7a27dba584f9d59`
`font_01_sfnt_off0000ec81.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEC81	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00010498.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10498	11308 bytes
SHA-256: `a94b0f38e7df22e670fe6bc27f28e7835b91f05a04f4d243ffeae314540c2ef4`
`font_03_sfnt_off00011f10.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11F10	17632 bytes
SHA-256: `7099993eb8c478536e573e806e50b065dffbea0c2452b9ab6df3c6af9252a808`

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