Malicious PDF — malware analysis report

Static analysis result for SHA-256 bed4ed6cbd055ec6…

MALICIOUS

PDF

96.1 KB Created: 2021-02-23 10:53:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 969e010beb025c68581eedab7a87eda3 SHA-1: 747e8d3fc6d2d960020a92f84581139e0a0c80df SHA-256: bed4ed6cbd055ec67044b357aa60132e5e083ecb2a4a715a6fac5867e51a310f
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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://jottigo.ru/strik?utm_term=briggs+and+stratton+550ex+140cc+parts+diagram PDF link annotation
    • https://cdn.sqhk.co/xejudawadoni/cjfggid/staph_infection_symptoms_skin.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452862/normal_5fcbd073a822d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450724/normal_60283932d138a.pdfIn PDF document text
    • https://cdn.sqhk.co/bitulore/98FIidN/43294737223.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447885/normal_6034376539905.pdfIn PDF document text
    • https://cdn.sqhk.co/zogaxokeno/ja4ijha/wajuroruvobapofog.pdfIn PDF document text
    • https://cdn.sqhk.co/kurotevu/vzjcUgi/abcmouse_app_free.pdfIn PDF document text
    • https://cdn.sqhk.co/niripakexad/Ugck8xi/big_bang_theory_robot_evolution_t-_shirt.pdfIn PDF document text
    • https://cdn.sqhk.co/texekikevow/cidThjX/88179348854.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/dazemi/standard_business_plan_format.pdfIn PDF document text
    • https://s3.amazonaws.com/jikopot/free_sheet_music_violin_cello_duet.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/59879841254.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/57165231641.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/difference_between_layer_4_and_layer_7_firewall.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/18945828177.pdfIn PDF document text
    • https://s3.amazonaws.com/nafibanefexex/wacom_cintiq_pro_16_manual.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_off00013588.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13588 5884 bytes
SHA-256: 79d72982ab78368e48c66bc8279e34ab0b86cc1edbeb0e25dbbabd8e2c1684da
font_01_sfnt_off0001498f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1498F 11652 bytes
SHA-256: cc41789cdcd10f2e5766bc71c67ea68867d1abcf3d99a90580ea3c854299e4a8