Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea36affab40589b3…

MALICIOUS

PDF

74.2 KB Created: 2021-01-20 06:28:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 9b22c63f05a362c5e307067d0fec3371 SHA-1: fd71e9bbdacfdd59aca6f1ea2f0007a3975e17ca SHA-256: ea36affab40589b3f7248756b0177d7a37e53f18fee4a02a9a634d333dfe9e52
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/123?utm_term=oracion+al+padre+eterno+lorgio+rodriguez'. This, combined with ML and ClamAV detections, strongly indicates malicious intent. The embedded URL is likely used to lure the user to a phishing site or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/123?utm_term=oracion+al+padre+eterno+lorgio+rodriguez In PDF document text
    • https://site-1167993.mozfiles.com/files/1167993/wobixutivazur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446633/normal_5f9e3506b0e18.pdfIn PDF document text
    • https://site-1179801.mozfiles.com/files/1179801/sukixuxu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366625/normal_5f95b84c45613.pdfIn PDF document text
    • https://site-1246938.mozfiles.com/files/1246938/83867083589.pdfIn PDF document text
    • http://jotijitod.66ghz.com/java_tutorial_for_android_development.pdfIn PDF document text
    • https://site-1195328.mozfiles.com/files/1195328/glowing_live_wallpaper_photo_frame.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465397/normal_5fefc1983dda7.pdfIn PDF document text
    • http://detomebokiv.iblogger.org/23698795636.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389570/normal_5ff8fc25d1b50.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nitesegu.epizy.com/rocket_league_cross_platform_steam_xbox.pdfIn PDF document text
    • https://s3.amazonaws.com/nedijowewoded/driving_test_nj_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/65580253061.pdfIn PDF document text
    • https://s3.amazonaws.com/legapatatezisa/padipalosixoninonusufu.pdfIn PDF document text
    • https://s3.amazonaws.com/juduk/owners_manual_for_ge_refrigerator.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/bonnes_pratiques_de_fabrication_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/gazitif/que_es_un_uniforme_de_enfermera.pdfIn PDF document text
    • https://s3.amazonaws.com/zafaronivaj/communications_strategy_template_charity.pdfIn PDF document text
    • http://dojidusajotat.epizy.com/arkab_el_hantour.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/rimovu.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.

FilenameKindSourceSize
font_00_sfnt_off0000ce54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE54 5140 bytes
SHA-256: c71d858207952cf0945e011a16471970a72d461f8b050238ca0e75a9679c4fd9
font_01_sfnt_off0000dfe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFE1 10952 bytes
SHA-256: aaf8b4aa55c6e1d8273900a5c674304e988c71010e273bd912dddbb8f1ab24ff
font_02_sfnt_off000103c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103C9 16196 bytes
SHA-256: 536551dee6876366cf8a5d925709f0aaa9c9f58e9963f4e154d0e8cf77de6ee3

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