Malicious PDF — malware analysis report

Static analysis result for SHA-256 aec3b1a31249b104…

MALICIOUS

PDF

66.9 KB Created: 2021-02-18 09:32:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: af807f19dfce089745ec0d25d1fa4c06 SHA-1: 8015bf5e75a5d89f1cd986ea706e94cef81a146c SHA-256: aec3b1a31249b10443cc732fa1420c325a2f9d1945520d4ad40e7d52730d3a51
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, potentially for credential harvesting or further payload delivery.

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://baarspo.ru/strik?utm_term=ford+focus+2004+sedan+sahibinden PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4486758/normal_601c6a315dd32.pdfIn PDF document text
    • https://cdn.sqhk.co/vekuperik/8jeYHl2/electric_circuits_nilsson_10th_edition.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451760/normal_60234aa90f71b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486197/normal_5fcab8f8c92f3.pdfIn PDF document text
    • https://cdn.sqhk.co/rekosiseweno/6hbgehh/jereruroxaf.pdfIn PDF document text
    • https://cdn.sqhk.co/fepogosu/cM8hdp2/63011565619.pdfIn PDF document text
    • https://cdn.sqhk.co/xalibolopov/gji4jdH/wafabozevifaji.pdfIn PDF document text
    • https://cdn.sqhk.co/zetarizelub/ciac9JY/city_car_driving_gameplay_pc_toshdeluxe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387808/normal_6007623eccbb6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501514/normal_5ffe289d1b3bb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sutawowirosuvuv/4gl_informix_code_example.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/munudixori.pdfIn PDF document text
    • https://s3.amazonaws.com/libosokune/27841695192.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/first_grade_worksheets_reading_and_writing.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/heart_border_design_template.pdfIn PDF document text
    • http://wuvasof.epizy.com/dahlia_planting_guide_uk.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_off0000c8db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8DB 5532 bytes
SHA-256: 8f31669ae939b4c445d9600256cf14c50fc9a82d18d4aba4d5ff1d48a03b822c
font_01_sfnt_off0000dba9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBA9 10324 bytes
SHA-256: 9ef420bf54e791a66e1924b6fffa99ea47deefd54c94e320a8afdb1dbc5fe1d5

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