Malicious PDF — malware analysis report

Static analysis result for SHA-256 65a7067f135a3f23…

MALICIOUS

PDF

153.2 KB Created: 2021-04-02 10:29:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 0fb3b51f1c635ac632971754c18d8d72 SHA-1: 5fedb597cd4a3995cd8a1bf3ef2af83130942874 SHA-256: 65a7067f135a3f238829d8889bf1342c1fe08fb65d344c109cced794a7852ff3
136 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests the document is designed to trick users into believing they need to download an archive, likely to bypass security measures. The embedded URL 'https://gimoguvi.ru/strik?utm_term=asus+rt-n12+wireless+n+router+firmware' is a primary indicator of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://gimoguvi.ru/strik?utm_term=asus+rt-n12+wireless+n+router+firmware PDF link annotation
    • https://lemusudavigi.weebly.com/uploads/1/3/5/3/135395292/12fad8d80.pdfIn PDF document text
    • https://nopubogap.weebly.com/uploads/1/3/4/6/134667077/gijal.pdfIn PDF document text
    • http://pagudovor.iblogger.org/week_by_week_pregnancy_chart.pdfIn PDF document text
    • https://vatuwogumim.weebly.com/uploads/1/3/4/6/134605764/3956158.pdfIn PDF document text
    • http://jemofukamuwol.22web.org/14822610855.pdfIn PDF document text
    • https://gewipilozu.weebly.com/uploads/1/3/0/7/130775211/ruxarowoxenamexudoj.pdfIn PDF document text
    • https://wojadamizaxit.weebly.com/uploads/1/3/2/6/132681796/7f0ece694.pdfIn PDF document text
    • https://wugepugozufov.weebly.com/uploads/1/3/4/7/134744675/sofakate.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jokilezitewoj.epizy.com/fuwukabizo.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/what_are_the_three_modes_of_heat_transfer_explain_with_examples.pdfIn PDF document text
    • http://gewutikuwa.rf.gd/dakagugavugeniwovewumuta.pdfIn PDF document text
    • https://s3.amazonaws.com/getizar/29103350081.pdfIn PDF document text
    • https://s3.amazonaws.com/bexolamabad/keresegixutipimipodi.pdfIn PDF document text
    • http://labimovoguduwej.epizy.com/imperative_sentence_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/certificate_of_recognition_design_template.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/jonaruxajumoxojomesuman.pdfIn PDF document text
    • http://vexeger.rf.gd/2019_atrial_fibrillation_guideline.pdfIn PDF document text
    • http://fizuvofodiku.epizy.com/cules_son_las_enfermedades_ms_comunes_del_estmago.pdfIn PDF document text
    • http://sagapuxoxonigig.epizy.com/biology_notes_for_ssc_cgl.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/fulajarowika.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_off00021c92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21C92 5212 bytes
SHA-256: 5a7099acbbcd919c1becf778757bfd6e3bf79ada2f50599b7e58877eec2cb7ac
font_01_sfnt_off00022e53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22E53 11488 bytes
SHA-256: 452387c5aea9c9c91491360ad28b79d910041d3c335bf4fb8f6dc578d655b508

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