Malicious PDF — malware analysis report

Static analysis result for SHA-256 58fc7af918f5918d…

MALICIOUS

PDF

81.1 KB Created: 2021-03-18 09:40:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dc2fec51f6f739ccedc0989668c38f9e SHA-1: e4c99623d55da8868485468124a274469004667f SHA-256: 58fc7af918f5918d3da8a086b3e0327c0186bb9f43353acacd9c28cc2fd40d11
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating it's a phishing trojan. An embedded URI points to a suspicious domain, likely used for phishing or to host further malicious content. The document body, though heavily obfuscated, contains text related to a product review, suggesting a 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://seumenha.ru/strik?utm_term=fender+mustang+i+v2+20-watt+review
    • https://static.s123-cdn-static.com/uploads/4370266/normal_5fce94c9c8613.pdf
    • http://loletopuwiv.iblogger.org/excel_sheet_contains_name.pdf
    • https://cdn-cms.f-static.net/uploads/4389805/normal_603aa818e825e.pdf
    • https://static.s123-cdn-static.com/uploads/4414353/normal_600746a69f1d2.pdf
    • https://static.s123-cdn-static.com/uploads/4390068/normal_5fff273401d70.pdf
    • http://lulizukudomiz.scienceontheweb.net/el_bergsonismo_deleuze.pdf
    • https://cdn-cms.f-static.net/uploads/4475572/normal_5fd7b83c7ab09.pdf
    • https://static.s123-cdn-static.com/uploads/4393018/normal_5fe48761e1085.pdf
    • http://xuwuvewisin.mypressonline.com/how_to_make_a_website_with_wordpress_-_divi_theme.pdf
    • https://static.s123-cdn-static.com/uploads/4386837/normal_5ff0974492464.pdf
    • http://xoroketogejuxe.mywebcommunity.org/23332795171.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sewuxuta.rf.gd/couch_to_5k_bbc.pdf
    • https://uploads.strikinglycdn.com/files/0a2ffdf6-1f61-4c2b-8751-2b16ab3ac00a/cuntas_caloras_debe_consumir_una_mujer_al_da.pdf
    • https://uploads.strikinglycdn.com/files/b2c54410-1954-4401-a81e-e1eae065b83a/fomomalugunulapog.pdf
    • https://804ec358-a7ea-46f4-8ec8-300fefeb2fcb.filesusr.com/ugd/03ef8e_6e91410638ab47c8a5fbfa988d9ea808.pdf?index=true
    • https://06ebba1c-c738-45d4-b58d-83edbdcc9420.filesusr.com/ugd/b14caa_1d62c424390d4f3db32f5e64bd8a3fad.pdf?index=true
    • https://uploads.strikinglycdn.com/files/4b9c6fc9-06f3-4a7d-892c-614e0c968eec/types_of_conflict_in_literature_man_vs.pdf
    • http://ginowane.onlinewebshop.net/37121691875.pdf
    • http://zapiwolatuw.rf.gd/danielle_steel_books_by_year.pdf
    • https://f904ef53-caa1-4f0f-8a97-c50675c03ece.filesusr.com/ugd/2f8cea_ee0230874bc5483a8d3143dc0c698a3d.pdf?index=true
    • https://uploads.strikinglycdn.com/files/ee940885-9756-41f4-9043-be81b0ed47bd/electricity_and_magnetism_worksheets_grade_4.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fdbb.bin
65668c500e6ef321636694f981843c235d7e734bffd853b0f9f2911a79899431		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDBB 5524 bytes
font_01_sfnt_off0001108f.bin
ed7ef03218199ce15686ef439a8d8fa277c5ce89a71f4cc9b4d94211f74a78fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1108F 11404 bytes

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