Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd670b53e007da91…

MALICIOUS

PDF

81.4 KB Created: 2021-05-18 16:52:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6ae73e98ce3c89c75e362ab391ddfa76 SHA-1: 954952ae3ffc78f96c090873b3ac1b745b957242 SHA-256: cd670b53e007da91bfcc4f75cb45fb8b4079b5323cefaf101d8ac5bc4f9a3a6d
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 0.9995

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://baarspo.ru/strik?utm_term=navy+officer+brag+sheet+example PDF link annotation
    • http://vuvisopubalakur.iblogger.org/abnormal_psychology_textbook_barlow.pdfIn PDF document text
    • http://fogivuwekewelub.iblogger.org/john_deere_44_snowblower_for_sale.pdfIn PDF document text
    • http://gupozatu.22web.org/76782841558.pdfIn PDF document text
    • http://vabuxobetarewo.22web.org/wufofowufaf.pdfIn PDF document text
    • http://zumepelilebatu.22web.org/sazipiwobezujen.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://xidijunuv.rf.gd/is_el_pollo_loco_soup_keto_friendly.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/jupudase.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/gopunikaziloguxojew.pdfIn PDF document text
    • https://s3.amazonaws.com/biwuwukesazef/box_culvert_design_spreadsheet.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/ruwisokew.pdfIn PDF document text
    • http://gotuwutusefaw.epizy.com/bejejuviretenabevad.pdfIn PDF document text
    • http://nipizil.epizy.com/comments_and_jurisprudence_on_obligations_and_contracts_jurado.pdfIn PDF document text
    • http://getozareburi.rf.gd/basic_electrical_engineering_mcq.pdfIn PDF document text
    • http://zinezalidoratov.rf.gd/kimafakaxukareri.pdfIn PDF document text
    • http://vulofuza.epizy.com/ansi_code.pdfIn PDF document text
    • https://s3.amazonaws.com/xakusineba/simpson_pressure_washer_3200_psi.pdfIn PDF document text
    • https://s3.amazonaws.com/pulujolatepuv/3452944562.pdfIn PDF document text
    • https://s3.amazonaws.com/xomudufe/94933069315.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/motegaburafub.pdfIn PDF document text
    • http://jodafibo.epizy.com/formula_para_convertir_pulgadas_cubicas_a_centimetros_cubicos.pdfIn PDF document text
    • https://s3.amazonaws.com/dazemi/breitling_aerospace_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/21841477880.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0BB 5448 bytes
SHA-256: eeafaac2347b7ace326fe1428272e3a44de3b8db6dc10a033c1b86a7d3394872
font_01_sfnt_off0001035a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1035A 11512 bytes
SHA-256: 64cf5fb28ef65b92047937ce154f39e8a6fbce788470ce9a1fdaba4da4fd7fd5
font_02_sfnt_off00012a39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A39 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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