PDF malware analysis — malicious · 2ecb56f6267a2944

MALICIOUS

PDF

101.8 KB Created: 2021-05-30 17:52:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20

MD5: dab96b5e169ec55b01242e557a903324 SHA-1: 7800d301c8d31df85b3741aa5086a8c97848d0a2 SHA-256: 2ecb56f6267a2944a7a9ea5585704bd64da082aa267ca2bc9471fc8b4e0425a7

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and numerous external links suggest an attempt to exploit users through a deceptive interface, potentially leading to further compromise.

Machine Learning

Nyx PDF Classifier malicious score 0.9978

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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://kuzutuzo.ru/strik?utm_term=restaurant+near+chandni+chowk+metro+station PDF link annotation
- https://pedumodab.weebly.com/uploads/1/3/1/6/131637036/5722108.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4465690/normal_5fe112f355a7b.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4414488/normal_6004efb8ce9a4.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4466664/normal_5fe5027b362d3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4479235/normal_60240675abd96.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454052/normal_60297d72212ec.pdfIn PDF document text
- https://leborulixa.weebly.com/uploads/1/3/4/5/134503619/gavidugonufopij.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4490265/normal_604cfe6608439.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4448986/normal_5fec22427d27b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4387938/normal_604d3b0ba3523.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4416125/normal_600f64aa35a28.pdfIn PDF document text
- https://tenekitu.weebly.com/uploads/1/3/4/0/134018212/wubulorutuweguxexiso.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4414695/normal_604f8b9a8f268.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375095/normal_6044db1f09bda.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4443594/normal_5fed7c4f31e84.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4490001/normal_60044fe54ab19.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://fedorahosted.org/lohitIn PDF document text
- https://uploads.strikinglycdn.com/files/0a6a5d48-b89b-449d-b71f-7fc33f5702da/pexugenibuno.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0cb7d0ce-58bd-4c02-bf47-0796119acde3/martin_luther_king_quote_the_ultimate_measure_of_a_man.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/cf122683-a419-42f4-a104-eeec8514e667/data_communication_and_networking_in_hindi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fc8da983-3c35-4c25-8a1e-6c00a0d09872/aci_318-14_building_code_requirements_for_structural_concrete.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5265cca8-98fe-4782-b84f-280e0176f85c/55659213118.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/461eedcf-f900-4b38-945c-19c856ac42b5/panelview_plus_1000_vs_panelview_plus_6.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a4f34b67-952c-424e-b948-8d3dd73ba17c/2003_honda_civic_service_light_reset.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9119a4a8-f5bf-4f26-bf61-72867848358d/93361438212.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f800ecc5-b0c3-4809-a948-bb7d8f5a466e/karcher_pressure_washer_k4_instructions.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://scripts.sil.org/OFLIn 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_off0001129e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1129E	5308 bytes
SHA-256: `b6e2b847f06a526a9ef0e4a1af0e0a7093d8b69a576fb28a2faf181daefd6111`
`font_01_sfnt_off00012499.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12499	10644 bytes
SHA-256: `5a34247c9c78aeeef92fc80a3d8980b05b2a7d5bc9df490f3d0b25d677ab91e9`
`font_02_sfnt_off00014941.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14941	16204 bytes
SHA-256: `532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e`
`font_03_sfnt_off00015eae.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x15EAE	13644 bytes
SHA-256: `ad9c9e197fb35dd5108414665268a7f8a3821fee818fb32efa230c3bf0704012`

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