Malicious PDF — malware analysis report

Static analysis result for SHA-256 852d31ec4f280a85…

MALICIOUS

PDF

86.5 KB Created: 2021-02-18 16:42:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 20d8c423c613f3ca09fe244838a4eb4a SHA-1: 214f1d6a4e1dcc69fa077ba9bea285f3da324724 SHA-256: 852d31ec4f280a85501671ddd73001356a2e0d88fef4c6f68df12d1a43321123
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by heuristics as an external URI and an embedded URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, contains text related to a product search, suggesting a lure to a malicious site.

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://seumenha.ru/strik?utm_term=thompson+center+renegade+front+sight PDF link annotation
    • http://thelandofbadideas.com/13503287394m23nt.pdfIn PDF document text
    • http://lovelyhouse.online/faxasapapolisuflz4i.pdfIn PDF document text
    • https://fujifarilopo.weebly.com/uploads/1/3/4/4/134483008/6834493.pdfIn PDF document text
    • https://kifenefaru.weebly.com/uploads/1/3/4/3/134327755/7188fea87.pdfIn PDF document text
    • http://carbags.site/9446173319941gyr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464530/normal_601feefc5621f.pdfIn PDF document text
    • http://shtangennstutkupitseychas.xyz/tik_tok_video_download_mp4_2020_pagalworld_funny0v260.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465389/normal_601f84e977d4e.pdfIn PDF document text
    • http://alexandreablog.com/rock_band_4_xbox_one_for_sale2kiii.pdfIn PDF document text
    • https://durunefa.weebly.com/uploads/1/3/4/7/134712847/7339726.pdfIn PDF document text
    • https://rogapunuki.weebly.com/uploads/1/3/4/3/134375427/39ad9610b063.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420589/normal_602a896f1340d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459791/normal_601b0f7ca7b9b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fidotetunuxezi.epizy.com/beaver_lake_fishing_report_april_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/briggs_and_stratton_500e_series_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/antivirus_kaspersky_free.pdfIn PDF document text
    • https://s3.amazonaws.com/damerirazib/62944741873.pdfIn PDF document text
    • http://memegimowa.epizy.com/dod_risk_management_framework_template.pdfIn PDF document text
    • http://bedafenewax.rf.gd/69287896812.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/octopus_mod_apk_update.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000febc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEBC 5488 bytes
SHA-256: 281ba7e212923a997886c29ba6f806f9f13f6f7446301370ad37bff2b62834f8
font_01_sfnt_off00011137.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11137 11184 bytes
SHA-256: 9b0d7b2df1d77e69b229958dcb7c53c543b4e50db321dea448f7bbaed112c81f
font_02_sfnt_off00013774.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13774 16060 bytes
SHA-256: 9044de52cb519c95ee67ddce32ea384e940c5cdde4d4dd99e22aebcefe2ca402

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