Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecbdbf9b8741cb1b…

MALICIOUS

PDF

80.2 KB Created: 2021-02-25 00:51:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: a698db65d37e0102ccbd5932a46d7ed3 SHA-1: 3e745cd82fd525f228215fca432ca84d23e1ad72 SHA-256: ecbdbf9b8741cb1b8e3f79d5da65ba667a56f3e546e133c6860cff24b1bcac1c
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search query, suggesting a phishing or credential harvesting attempt. ClamAV detection and ML classification strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were directly extracted, the PDF structure and embedded URI heuristic point towards a malicious document designed to redirect users to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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/123?utm_term=what+kind+of+transmission+fluid+does+a+2006+honda+accord+take PDF link annotation
    • https://cdn.sqhk.co/zujarepifej/azja7XT/ho_slot_cars_for_sale_near_me.pdfIn PDF document text
    • http://nutunajika.66ghz.com/69197583689.pdfIn PDF document text
    • https://cdn.sqhk.co/lapefuxolu/qkfdwhf/87631806407.pdfIn PDF document text
    • http://supanigavig.iblogger.org/41407096683.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403556/normal_5fe89dcd445cf.pdfIn PDF document text
    • http://xelirap.22web.org/how_to_get_bahamut_cat_true_form.pdfIn PDF document text
    • https://cdn.sqhk.co/rapovixovuti/ghhieig/part_time_marketing_assistant_jobs_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/pifonode/hjCwO3d/aliens_drive_me_crazy_mod_apk_hack.pdfIn PDF document text
    • http://gijokamamijole.iblogger.org/what_is_the_school_system_like_in_finland.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zosajaxuv.epizy.com/jinobuxirepobegisid.pdfIn PDF document text
    • http://favigagiwu.epizy.com/dawukatuverijufixafiki.pdfIn PDF document text
    • https://s3.amazonaws.com/wemazun/accelerator_manager_portable.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/90585634368.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/24782251357.pdfIn PDF document text
    • https://s3.amazonaws.com/nawosineromigi/ielts_speaking_sample_answer_hobbies.pdfIn PDF document text
    • https://s3.amazonaws.com/sajezife/house_furniture_vocabulary_worksheet.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_off0000fc19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC19 5764 bytes
SHA-256: e02bb8ae77ddcb9d2c2f91d2fbfdf241c8dbef69e80020a644acbfc26a364038
font_01_sfnt_off00010fa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FA9 10504 bytes
SHA-256: 1dd4479f7302579e88a21279fb4c6c1162d32c37a05f992432724625479a48e8

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