Malicious PDF — malware analysis report

Static analysis result for SHA-256 9327105b014f1449…

MALICIOUS

PDF

76.3 KB Created: 2021-02-18 16:00:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 04a14b87cac984448f555c1d4ac418d2 SHA-1: 9e9a4a18a7e555cd255e1fc06eefd43e7bc66826 SHA-256: 9327105b014f1449cb2f3a32998e491c3d91dab2a4db1052238412ca45736460
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to 'seumenha.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains text related to a search query, suggesting a lure to trick users into clicking the malicious link.

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://seumenha.ru/wb?keyword=how%20old%20is%20my%20envirotemp%20water%20heater PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413368/normal_601cbc42c5180.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455183/normal_600c1eff5d178.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503791/normal_5fd642c525fad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500429/normal_5fc9ab39f12ac.pdfIn PDF document text
    • http://golomashvanna.xyz/330521449898fqfy.pdfIn PDF document text
    • http://verefdliyvtorogo.xyz/1422976333161nqb.pdfIn PDF document text
    • https://cdn.sqhk.co/lawikuto/igiidhd/37716304467.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444626/normal_5fe294aad2101.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389074/normal_5fd852256149c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465015/normal_6011e448e540b.pdfIn PDF document text
    • https://cdn.sqhk.co/baruduwege/9ijZSgd/chocolate_recipe_no_baking_soda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481994/normal_6015cc855d89d.pdfIn PDF document text
    • http://damvglaz1.xyz/zijazoxube5rhs3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496571/normal_6001116bcf988.pdfIn PDF document text
    • http://haustova.com/how_do_i_contact_walmart_com_customer_servicemt0gw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379035/normal_60085e3e920b5.pdfIn PDF document text
    • https://cdn.sqhk.co/segisaxa/jgijcu6/97558970649.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453335/normal_5ff9a71135b8d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367656/normal_6021f7e39d8aa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ee23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE23 5412 bytes
SHA-256: 6cf7caffc50c170450c3307e518319ca4f4b2fb512de64c61ac2c82f49182e75
font_01_sfnt_off00010077.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10077 10460 bytes
SHA-256: 576b9e0cc3ab4e501d79451a0a02fe93b4555a310ca5683f768b4fd08e3f17f5

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