PDF malware analysis — malicious · 1902c016b49cdc29

MALICIOUS

PDF

89.5 KB Created: 2021-09-16 01:45:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14

MD5: 53d1b43498f9cd74923fa973021f6928 SHA-1: 03a3e87cc849475c88a6245c1a8a72361fbfca48 SHA-256: 1902c016b49cdc29c461aad40460b002592de43f7b75f46e61cacfcfb103340b

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The sample was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The PDF contains numerous external URIs and is identified as a link farm, suggesting it's designed to redirect users to potentially harmful websites. The presence of embedded URLs and the overall structure point towards a phishing or malware distribution campaign.

Machine Learning

Nyx PDF Classifier malicious score 0.9913

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://medvor.ru/uplcv?utm_term=play+store+anbox PDF link annotation
- https://textosl.com/upload/editor/file/ravaxirunabadulopegake.pdfIn PDF document text
- http://spakimthi.com/upload/files/fawuzixutolizaso.pdfIn PDF document text
- http://nordicwalkingturak.hu/_user/file/78752477635.pdfIn PDF document text
- http://heatherjansch.com/ckfinder/userfiles/files/86763062338.pdfIn PDF document text
- https://zd-zeta.com/uploads/files/202109131642461900.pdfIn PDF document text
- https://tssch.in/tssch/application/admin/uploads/file/94001373289.pdfIn PDF document text
- http://csc-021.com/userfiles/file/20210911011208_hbb6ka.pdfIn PDF document text
- http://lagrupacio.cat/file/fudavekerigameneta.pdfIn PDF document text
- http://bangkokmagnetwire.com/ecodev_test/image_system/files/buzilon.pdfIn PDF document text
- http://zbraneklapka.cz/ckfinder/userfiles/files/98750598528.pdfIn PDF document text
- https://helicopterleasingservices.com/userfiles/files/modijakixug.pdfIn PDF document text
- https://menlopark.com/wysiwygfiles/file/89395932630.pdfIn PDF document text
- https://andana.us/files/files/9856602664.pdfIn PDF document text
- http://www.fdconsult.qa/public/uploads/cms_files/52236725550.pdfIn PDF document text
- http://avon-bratislava.com/files/files/40866315936.pdfIn PDF document text
- https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/vbbraukvct86qgeg0i9shgkfe6/vofomoturedunivadab.pdfIn PDF document text
- http://harrodsrentacar.com/public_html/userfiles/file/webexofisumixodaf.pdfIn PDF document text
- http://francescofesta.it/userfiles/files/labimukifa.pdfIn PDF document text
- http://vitalchurchesinstitute.com/files/file/menowamekozunadoxo.pdfIn PDF document text
- https://duhocblueocean.vn/ckfinder/userfiles/files/59711746641.pdfIn PDF document text
- https://khonggiansachhanoi.vn/uploads/files/nigaroxiwij.pdfIn PDF document text
- https://cochleartudaskozpont.hu/files/lamegozisa.pdfIn PDF document text
- https://soudurelausiere.ca/upload/editor/file/83199821586.pdfIn PDF document text
- http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/lq2dd5fe0bilgbn83585qcgle7/86772183341.pdfIn PDF document text
- http://tvoirostov.ru/ckfinder/userfiles/files/48752544552.pdfIn PDF document text
- http://abogadosaguilar.com/ckfinder/userfiles/files/29194340957.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_off0000f19f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF19F	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off000109b6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x109B6	10368 bytes
SHA-256: `7b9482152158f001bb1de015e1571e95614fc1a673e1727ca28e45b11742cf75`
`font_02_sfnt_off00012163.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12163	21136 bytes
SHA-256: `8df2b3b0fd3fba016880d48425ef3c4f82d7c18746e2f064bb4b7b88e149c928`

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