Malicious PDF — malware analysis report

Static analysis result for SHA-256 f02efb4ff0a7f711…

MALICIOUS

PDF

77.7 KB Created: 2021-05-08 14:02:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: aa547270a4182c85ae7e518514765a80 SHA-1: fc5e9d751826fa8478b7f9906f98a13bc439caa7 SHA-256: f02efb4ff0a7f711376da9925a58a52c89ae436f1f76a721a40d8cc8e8dfcbd2
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a suspicious domain, suggesting a phishing or scam attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains keywords related to a product upgrade, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xezojetit.ru/strik?utm_term=dell+xps+8300+power+supply+upgrade PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4445106/normal_5ff1f8dd0ec8e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496380/normal_5fdcbcfd77988.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417534/normal_5ff9e6cc6534e.pdfIn PDF document text
    • http://enots.space/13176387773baqge.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496170/normal_5ff527e0de4bc.pdfIn PDF document text
    • http://bogaxusamukuxid.22web.org/37447480684.pdfIn PDF document text
    • http://luminar2-download.xyz/black_flag_40-watt_electric_bug_zapper_reviewsy7nui.pdfIn PDF document text
    • http://dawuxapi.iblogger.org/tovuxewejajakek.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460966/normal_6054cdd7e71d0.pdfIn PDF document text
    • http://startovaya.ru/wazegajutalcpxvv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://razogop.epizy.com/photoshop_caricature_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/gazijewevan/what_to_bring_to_rmv_for_license.pdfIn PDF document text
    • https://s3.amazonaws.com/tubupejevomo/fillable_calendar_template_may_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/fogibi/para_que_sirve_el_te_de_curcuma_jengibre_y_limon.pdfIn PDF document text
    • http://bavabime.rf.gd/71939671697.pdfIn PDF document text
    • http://vavijirodujozi.rf.gd/angular_2_format_number_pipe.pdfIn PDF document text
    • http://pefodajisotavuk.rf.gd/reflexive_pronoun_worksheets_with_answers.pdfIn PDF document text
    • http://robebiwasufilu.epizy.com/genting_singapore_annual_report_2014.pdfIn PDF document text
    • http://xofaxisenulomav.epizy.com/where_can_i_buy_a_starbucks_coffee_machine.pdfIn PDF document text
    • http://puretuwedeva.epizy.com/61586723539.pdfIn PDF document text
    • http://wuwusawoviwu.rf.gd/liderazgo_democratico.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_off0000eddd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDDD 5888 bytes
SHA-256: b2ec353d04adb73b76090f4aede9fe4414296105d5068c0cbce51d9efd1cd740
font_01_sfnt_off00010213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10213 11056 bytes
SHA-256: c85134bada9ed98c79892ed48bb07e9acc71b174d798fd33d980730851098457

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