Malicious PDF — malware analysis report

Static analysis result for SHA-256 e37473f14f8866fa…

MALICIOUS

PDF

82.6 KB Created: 2021-02-06 00:41:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 1341eb3a8f774c8b579c6aa5435778d7 SHA-1: bf7a9d2a24fac08506cf4585f94c3c318faf984b SHA-256: e37473f14f8866fa06115d1c66b52725c052d07b1987c1c595bed187f9069f4c
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI that directs the user to a website disguised as a search result. This technique is commonly used in phishing attacks to redirect victims to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://maypoin.ru/wb?keyword=bayesian%20information%20criterion%20example PDF link annotation
    • https://jafiwivejo.weebly.com/uploads/1/3/5/3/135305612/manamexakejo_rebatosujow.pdfIn PDF document text
    • https://vepemetamat.weebly.com/uploads/1/3/4/3/134354227/dikajozibapiwegasade.pdfIn PDF document text
    • https://cdn.sqhk.co/kupejabel/bxjic8g/underseat_luggage_walmart.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382790/normal_5fdc84b67bef5.pdfIn PDF document text
    • https://cdn.sqhk.co/jiluputumusi/J6lJxji/bawujetemeje.pdfIn PDF document text
    • https://cdn.sqhk.co/guwaloxipete/jkYjbYQ/back_wars_game_mod_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486983/normal_6007334fe13c0.pdfIn PDF document text
    • https://cdn.sqhk.co/dumotometapo/jgwDb1r/legend_of_blades_mod_apk_unlimited_money.pdfIn PDF document text
    • https://cdn.sqhk.co/fularulojoze/fhvkIyi/68906891143.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481173/normal_6019a6ec864c2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367645/normal_5ff249a52b831.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xovekolamoxe/49707291645.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/information_report_text_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/wolina/wexeriwiniga.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2A4 2900 bytes
SHA-256: 40ce0bc9b113ef031639604f059b60aa9f1e41b097d60e75bfbf620cccc66306
font_01_sfnt_off0000ece8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECE8 5380 bytes
SHA-256: 60cd09921aff276e62ccb855604213023388b301ca26658dca1d550cc3792b70
font_02_sfnt_off0000ff33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF33 11604 bytes
SHA-256: 4e0f20f67944ede479c8acc2f1b9590533ea9b4d7615303b97a3eae9c6fe3a61
font_03_sfnt_off00012712.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12712 16228 bytes
SHA-256: 53196a0db3a987e81632fb5f67595a32d9f867e0cf434cf4b0b9bf5dd4a8d2bc

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