Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4753e74d0e62a94…

MALICIOUS

PDF

79.0 KB Created: 2021-04-05 03:32:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 3bc907c24d454dde3728680cdad81ae9 SHA-1: df0dff2945090376773226741d3725ebdb587583 SHA-256: b4753e74d0e62a9438321991d3a919eb0e411eef0cd257b71a614d9918243e17
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 0.9998

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://dafemum.ru/wix?keyword=fallout+3+outfits+female PDF link annotation
    • https://sugowula.weebly.com/uploads/1/3/4/6/134646485/xuluxogoxus.pdfIn PDF document text
    • https://kufojomarolov.weebly.com/uploads/1/3/4/4/134401526/9510684.pdfIn PDF document text
    • http://fbcopyright-center.com/xikebovutilorobv1xgt.pdfIn PDF document text
    • http://kiwikinixibiko.iblogger.org/vimavititozemikanom.pdfIn PDF document text
    • http://sayseedokg.com/3077369254phi38.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zexenodu.rf.gd/towemu.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/5462815427.pdfIn PDF document text
    • https://s3.amazonaws.com/resabomibogodaw/17935114081.pdfIn PDF document text
    • http://pabotojixupi.atwebpages.com/pejebof.pdfIn PDF document text
    • http://purezaviwof.myartsonline.com/damopoluj.pdfIn PDF document text
    • http://neropalumej.rf.gd/puzidovelibenu.pdfIn PDF document text
    • https://s3.amazonaws.com/dusubonifu/apache_commons_csv_date_format.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/obd2_android_bluetooth_software.pdfIn PDF document text
    • http://tijunejo.epizy.com/60345641363.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/maintenance_report_template.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/john_deere_71_planter_pea_plates.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/zogixe.pdfIn PDF document text
    • http://jubogaju.atwebpages.com/can_you_use_a_water_flosser_with_braces.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB1D 3080 bytes
SHA-256: 5510861e0701cb7f7f57c1c4f6c9cfe19f8a483cefdede93edc0bf9cc0aea221
font_01_sfnt_off0000f625.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF625 4936 bytes
SHA-256: 4d286a1bc182a7e089c58ff0b2c02146ee121e9829818fb03cc21ce82ffebe53
font_02_sfnt_off000106e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106E8 12316 bytes
SHA-256: 2233de7fd04635b55133e9a15aa0fa60082165396130846f6dccb4df922e6015

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