Malicious PDF — malware analysis report

Static analysis result for SHA-256 eec5debae7f5a6a5…

MALICIOUS

PDF

82.3 KB Created: 2021-04-13 21:43:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 4b35869c29868c9afc0c0555e617c88d SHA-1: 6455deb2b97a921409aec1aa0e0c93e71a53460d SHA-256: eec5debae7f5a6a5678f51ed7f724a8f7d8a1b76527fb1d590a35f68696c8368
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged by multiple detection engines, including ClamAV and an ML classifier, indicating malicious intent. It contains an embedded URL that, when clicked, leads to a domain associated with phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to device troubleshooting, a common tactic for phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://midufefew.ru/strik?utm_term=how+do+i+get+my+rca+tablet+out+of+fastboot+mode PDF link annotation
    • https://cdn.sqhk.co/woledowo/ooy1PkL/14206681097.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416305/normal_60379b7c06526.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489259/normal_5ff7ac7e44821.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381534/normal_602f294090a58.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486350/normal_5ff94dfaa8fea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391898/normal_601d5e971d3ae.pdfIn PDF document text
    • https://cdn.sqhk.co/kuburarimoku/OJJnngi/27660502237.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501991/normal_604dabe6c9d95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464323/normal_605ca1fc0f629.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414342/normal_605baa1ab1285.pdfIn PDF document text
    • https://cdn.sqhk.co/zirigajer/uidgigf/didewumume.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/ff7473db-9e95-43ea-888e-9cd88a304252/the_entry_to_close_the_income_summary_account_may_include.pdfIn PDF document text
    • https://s3.amazonaws.com/wizomoravazub/defijelirijofolefazagumo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb90fd49-0de3-4d42-bfb2-6b13a732c3d5/sears_appliance_repair_service_plan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c32bb2e4-d5c1-4882-ac6c-48ba3b65f97d/how_to_reset_maintenance_light_on_2005_honda_civic_hybrid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ea403c6-af53-4b88-8c74-db0bd250105c/black_and_decker_lawn_mower_mm875_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d429e505-5303-4a95-ac4d-1b6742d95079/cyber_security_darshan_study_material.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2383e2b2-00dc-4183-9d53-d653da092634/28558545008.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b38b66e-f979-4635-90b2-e722e0226dd8/how_to_write_a_5_paragraph_essay_outline.pdfIn PDF document text
    • https://s3.amazonaws.com/nufidibodudulad/can_a_person_be_on_50_liters_of_oxygen.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/votonotonazufavegibi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9513ed23-9c77-4f49-9e07-ef43cb89b435/24921248897.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c212e165-1d1b-4f7e-a344-fdf56594d7e9/denon_avr_1612_remote_control.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f26b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF26B 5412 bytes
SHA-256: 8e82dee25d77c6b9477f8abbae76724f921102d22f6ec2302ca4407ebd45f262
font_01_sfnt_off000104f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104F2 12044 bytes
SHA-256: 7ad3ad57366d2455038ed9a70ec12f24834b7987043b92f7ae2d80c867778d17
font_02_sfnt_off00012cb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CB3 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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