PDF malware analysis — malicious · 20fea58c2ab0c8a8

MALICIOUS

PDF

84.7 KB Created: 2021-05-28 12:55:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23

MD5: f583e052a2cb99aea4dd5015ffdfa9d5 SHA-1: a12e52dc55a71b117ef3a10344901cdad5fe9dbf SHA-256: 20fea58c2ab0c8a85cbeb51c33b96f910b9a20da52a994fc24a093ba75515e1a

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that leads to a domain known for hosting malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a harmful site.

Machine Learning

Nyx PDF Classifier malicious score 0.9992

Heuristics 4

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://druttle.ru/strik?utm_term=metodo+de+ruffini+definicion+y+ejemplos PDF link annotation
- https://cdn-cms.f-static.net/uploads/4457000/normal_60431c508a420.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4387706/normal_60063fc22c3c5.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4485457/normal_5ff28e83c0168.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4452835/normal_6054f8e972736.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4479214/normal_5fde4c3c85b72.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4496592/normal_5fca5d459be30.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4444850/normal_600c529674a40.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4469626/normal_5fe0b7d5ed275.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/554b809e-775b-4653-8128-9287e699b73e/plantronics_backbeat_fit_2100_problems.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fe927b0d-479a-4aa5-87b7-722655e07c5d/sejawokofiratitofadinopus.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5457d3fd-16eb-40e4-885a-ba1806e8f220/36181435827.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4c4eb8ea-f991-448d-a7c5-5f8c7ddb3d5c/valentine_one_v1_radar_detector_rear_view_mirror_mount.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/89ec3ca3-b72f-430c-b88d-78d26f5440a2/83580646691.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ee359053-0114-4797-9720-547b9e5694b9/coran_audio_al_houdaifi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b4511b0e-74b6-4dd7-80a7-b42304bf95c6/13486343615.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/12e42f82-5363-423d-94c5-f1233efb614f/what_is_the_job_of_chemical_engineer.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d21bf3de-0db1-4cd7-9bc1-f3574662ef83/47899967148.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8382e2db-a3e2-4e2f-8200-5baf5e5e98e8/46025831583.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e190a111-8394-424c-849f-3650f1f4e40a/quickbooks_import_chart_of_accounts_excel.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/96e00026-963f-43fa-b73f-7bd60b476656/mizusupaxuto.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/dd66e279-91a5-48cd-ad6c-c47cb6713115/sisofejareramiwisa.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9436799a-69a8-4f9a-acb3-82581fd1551a/polaris_one_man_outrigger_canoe.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/91fddab9-3caf-4441-9662-9a90e21d10a6/sibemubakurutuv.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f22e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF22E	5276 bytes
SHA-256: `fc65951a2dbef1ca3ec68d8fdbf1fcb28fad12e8f78e0190f583d46be5002d39`
`font_01_sfnt_off00010426.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10426	12876 bytes
SHA-256: `5edd8826023c22a0d3b2cf57fe16bf0b3f17505549b8d8c4c0ab22930642cf85`
`font_02_sfnt_off00012e96.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12E96	16096 bytes
SHA-256: `3a87a2a80cb0740ff7ad33dbd9b35031d90241dfccc5ab96a3d2c3133af9c3ca`

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