Malicious PDF — malware analysis report

Static analysis result for SHA-256 4838a5aad7d951c8…

MALICIOUS

PDF

81.2 KB Created: 2021-02-26 02:20:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 6865e2660ae6528932171f8e91f59613 SHA-1: 87fb47b7c5f44c78cf49536a5e2db15ea5f97080 SHA-256: 4838a5aad7d951c89d68ba3ac30c237beb47d4f2c60adf77e5a0615888639651
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that directs users to a suspicious domain, likely for phishing purposes. The presence of PDF-specific heuristics and the overall structure suggest it's designed to exploit user interaction through a malicious attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://bologen.ru/strik?utm_term=xenyx+qx1202usb+manual PDF link annotation
    • https://cdn.sqhk.co/womawuxinuge/QhahiwL/voxevo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373261/normal_5fe5e4d9c8c16.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369922/normal_5ff973e424c25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426415/normal_5fdc281eea875.pdfIn PDF document text
    • https://cdn.sqhk.co/wofetewa/e3ihhR0/49582107871.pdfIn PDF document text
    • https://cdn.sqhk.co/bijowiroma/gjggnge/59605477291.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378381/normal_5ff59e5c14143.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380383/normal_602a36b32debf.pdfIn PDF document text
    • http://nofuwev.iblogger.org/acknowledgement_for_report_practical.pdfIn PDF document text
    • http://vifuwala.iblogger.org/46208853653.pdfIn PDF document text
    • https://cdn.sqhk.co/xejudawadoni/4ZkRwK5/idle_cooking_tycoon_mod_apk_1._26.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/fadupazageraf/secure_vpn_pro.pdfIn PDF document text
    • https://s3.amazonaws.com/rojalexipokadaz/furizujisaxiwij.pdfIn PDF document text
    • http://xifudovolamam.epizy.com/10830660364.pdfIn PDF document text
    • https://s3.amazonaws.com/jivagajamav/cnc_guideways.pdfIn PDF document text
    • http://jonakemog.rf.gd/maestra_en_psicoterapia_cognitivo_conductual_en_lnea.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/jowaxidezejilinu.pdfIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/cheat_sheet_idiom_meaning.pdfIn PDF document text
    • http://jewojaregoluwat.epizy.com/autumn_starting_here_starting_now.pdfIn PDF document text
    • http://jufafiwosekugon.rf.gd/hardy_boys_cast.pdfIn PDF document text
    • http://voperafabekom.epizy.com/laminas_perspectiva_caballera.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_off0000ffd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFD1 5472 bytes
SHA-256: 653e8e7d5b57a635ec4b894e3cfd67167ea86b9a0353723639351a0ed7a36f35
font_01_sfnt_off0001126c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1126C 10756 bytes
SHA-256: 08237d5b03894eaf6d5dcabb9713d8dd7c60b81b220a18c5e6df3136b8cd682c

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