Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca5c9381eaf8715c…

MALICIOUS

PDF

85.0 KB Created: 2021-01-25 05:49:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 0e24cda0dec7592efeecb0769980bb2c SHA-1: e7e21f8fb0ee9453b02f9ba12381e363fab9cfd0 SHA-256: ca5c9381eaf8715ca2367222001c33bd44519d99f1b8a6fb5ce4685dc3ecac5c
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that is flagged as malicious by heuristics and a machine learning classifier. The document body, though heavily obfuscated, suggests a lure related to a 'Caterpillar 3126 marine engine manual'. The primary malicious indicator is the external URI pointing to 'traffnew.ru', likely intended to deliver a secondary payload or lead to a phishing page.

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/123?utm_term=caterpillar+3126+marine+engine+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4467036/normal_5fd2171090cc3.pdfIn PDF document text
    • http://golesaluwo.66ghz.com/94904923233.pdfIn PDF document text
    • https://cdn.sqhk.co/vimanagadu/VIwgejh/getewaxakevuvedusov.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419235/normal_5ff7b959d09d9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://roruvavaderej.epizy.com/apil_guide_to_personal_injury_claims_procedure.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/nespresso_capsules_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/area_converter_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/bomifabipi/2019_calendar_with_indian_festivals.pdfIn PDF document text
    • http://sabenimuzu.rf.gd/ieee_word_document_template.pdfIn PDF document text
    • https://s3.amazonaws.com/dakebesuvum/godolabapakasopodejis.pdfIn PDF document text
    • http://voginafukut.rf.gd/27866042754.pdfIn PDF document text
    • https://s3.amazonaws.com/xovekolamoxe/bluestacks_android_emulator_review.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/best_android_mobile_phones_below_20000.pdfIn PDF document text
    • http://bukuzagalu.rf.gd/putopu.pdfIn PDF document text
    • https://s3.amazonaws.com/xapidajovaji/life_skills_worksheets_free.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_off0001046f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1046F 5368 bytes
SHA-256: 01ad5285942b1a80e96e3e65e8a5de0e016d31c30490e58196f98b163270e951
font_01_sfnt_off0001169c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1169C 15200 bytes
SHA-256: dca2316551cded769faf0c47a065381117995e319a47ab66478957b795ffed10

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