Malicious PDF — malware analysis report

Static analysis result for SHA-256 954f62b449b367e9…

MALICIOUS

PDF

66.9 KB Created: 2020-11-26 09:46:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: b18494fea567c49b9295857c993ee5dd SHA-1: 2c7df3be5f6c4f5f69cce8fac882dcbdea85afc9 SHA-256: 954f62b449b367e953c99864ac510a267cad4225020f6a7e076cb4569c7a939a
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 suspicious domain, identified by heuristics as a potential phishing or malicious content delivery vector. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffnew.ru/strik?utm_term=poems+about+happiness+and+sadness PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366375/normal_5f907a97bebb6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367005/normal_5fad7e9c2de6b.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/49859692-00fc-4925-be3c-ac5fa10719ac/riluxo.pdfIn PDF document text
    • https://s3.amazonaws.com/mujevubutukoxu/49817725702.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ce9b2a2-07f9-4e12-b0fb-8f2fa8e10d28/frp_fastboot_tool_download.pdfIn PDF document text
    • https://s3.amazonaws.com/jepavilutabilel/writing_business_letter_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f5cdeab-afdc-4677-9c76-3fd5d5ceb44e/xenubonunagovalujobesir.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/75526319478.pdfIn PDF document text
    • https://s3.amazonaws.com/bodajaku/smash_bros_flash_unblocked_66.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/insta_pot_ultra_manual_setting.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/797e4afd-9c2e-4a76-9805-f67e74b72b91/coleman_18_x_48_pool_pump_setup.pdfIn PDF document text
    • https://s3.amazonaws.com/vofosuvuwapiwo/71774950084.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA96 5212 bytes
SHA-256: 8eb26513a03436db28897eb0817fa6db88c4cbf892db4cfb79978d46bb60f52e
font_01_sfnt_off0000dc1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC1E 10396 bytes
SHA-256: f2c8dbf65f3786e4ef540a9de95263161ea940281d6ca0d9fe6de4efc33b132a