Malicious PDF — malware analysis report

Static analysis result for SHA-256 e205bbc223cdd569…

MALICIOUS

PDF

71.0 KB Created: 2021-02-14 23:43:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 1f2115291d5a34d428b5bc58bd69415e SHA-1: 886ca1d1469e23ab5992767e92350ed2b9c412f8 SHA-256: e205bbc223cdd5698fd8bd8a13556ab6a020461a3ff1ad92056752432fe2980e
96 Risk Score

Malware Insights

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

The file is a PDF document flagged as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to a suspicious domain, 'seumenha.ru', which is likely used to deliver a malicious payload or conduct phishing. The document body contains garbled text, suggesting it may be obfuscated or intended to be rendered in a specific way to hide its malicious intent.

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/123?utm_term=edison+high+school+football+coach PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4404133/normal_601617aca7172.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426407/normal_6010d4665fa85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420764/normal_600f5b95cba2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487918/normal_601494b62a80f.pdfIn PDF document text
    • http://gnoogle.site/caixa_de_traje_sangrento_bdowgob0.pdfIn PDF document text
    • https://cdn.sqhk.co/kagelemovo/9LjdG29/air_control_valve_price.pdfIn PDF document text
    • http://hesap-al-sat.com/simulazione_test_bocconigstrg.pdfIn PDF document text
    • http://mexicotop3.xyz/kalorovnz2k1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466368/normal_5fd3b60b61d8e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427780/normal_5fddb63e1d773.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414494/normal_5fea3d1b49dbf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381978/normal_5fdf0e44a6844.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzinipaz/hbjcdgj/joxijugikovef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/gewuwasi/pubijesadagepu.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/ac_market_4._0_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vigevot/gowebilivogugeweruzamep.pdfIn PDF document text
    • https://s3.amazonaws.com/tiniruru/case_carburising_process.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE37 4956 bytes
SHA-256: 8a9c0404299cc4200f27343cad6f2cb357e4eda9a3506d0d995321bb762a65c7
font_01_sfnt_off0000df04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF04 9912 bytes
SHA-256: 5ca773d1f872dcf981ecaa174cd6f7739b8598cb6106bbc75c1687d7c559671d
font_02_sfnt_off000100f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100F7 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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