Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbc38b7114422871…

MALICIOUS

PDF

82.0 KB Created: 2021-04-08 21:40:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65f853796ae5ce5dd26118f4bdfd43b7 SHA-1: bcf6c59d7d6db427e57a52fe78084d0198119f4b SHA-256: fbc38b71144228718346cb43005e3462716a56e7f2d0a109d9bc750589c221e6
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a website disguised as a tutorial for building a WordPress site. This URL is flagged as malicious and is likely intended to lead to further compromise. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

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://vilenefex.ru/strik?utm_term=how+to+build+a+wordpress+website+in+godaddy
    • https://cdn.sqhk.co/nalawanuxa/FhcwLid/metropolitan_theatres_santa_barbara_paseo_nuevo.pdf
    • https://cdn.sqhk.co/suzeboxiwo/n4MgieR/video_maker_app_without_watermark.pdf
    • http://fopemotizikaj.iblogger.org/animus_stand_alone_apkparadise.pdf
    • https://static.s123-cdn-static.com/uploads/4475847/normal_600206c0275c2.pdf
    • http://fepemewavitik.66ghz.com/kuwibi.pdf
    • https://cdn-cms.f-static.net/uploads/4457320/normal_605944300bdd2.pdf
    • https://cdn-cms.f-static.net/uploads/4488822/normal_603c66b35f7c2.pdf
    • https://cdn.sqhk.co/jigavozef/vhfgggc/20999283867.pdf
    • https://cdn-cms.f-static.net/uploads/4390641/normal_605210f8b868e.pdf
    • https://cdn-cms.f-static.net/uploads/4495838/normal_60505cf5703e5.pdf
    • https://cdn.sqhk.co/tategupet/6ewjjOK/26279146321.pdf
    • https://cdn.sqhk.co/tajudozizif/zibjjji/54692957365.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://3f735f5a-cd1c-4288-bd93-adeff6e084d9.filesusr.com/ugd/bcc0e4_1dc4aa0772584ed798eec240d0dcce68.pdf?index=true
    • https://s3.amazonaws.com/defipedibe/63394446757.pdf
    • http://luwikomoxure.epizy.com/35352332467.pdf
    • https://s3.amazonaws.com/gupawupigawono/63585419805.pdf
    • http://zisibife.epizy.com/wupixigesiwofuwawezaduzar.pdf
    • https://f3dbd103-cf2f-44fc-b0ad-c9004dc38af2.filesusr.com/ugd/1f2646_d33cfff4dc0b4743a1320bbda0fa7ff7.pdf?index=true
    • https://s3.amazonaws.com/fotojipifuzitul/que_significa_soar_con_muchas_cucarachas_en_la_cama.pdf
    • https://s3.amazonaws.com/zaxawetawupo/63592056184.pdf
    • https://08c3cc13-1ce0-4add-927e-a3aed263473e.filesusr.com/ugd/ccf397_a7d8721653aa417791f808b4d43b0acf.pdf?index=true
    • https://s3.amazonaws.com/kuboki/rakixevasojiwuwumaxat.pdf
    • https://s3.amazonaws.com/sogovekevi/57548089253.pdf
    • https://s3.amazonaws.com/fopalew/fesevejuxoparaguzenoxon.pdf
    • https://c6f55193-7475-4343-97dd-33cb3b141b6a.filesusr.com/ugd/808d8c_5fed263bdbbe4e02ae95a9fbd846d142.pdf?index=true
    • https://203e7bc3-08d7-4ecc-a8df-f797e0d4a079.filesusr.com/ugd/d4579c_0f20293712344c7388a23505a68de250.pdf?index=true
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f43e.bin
e677c9bd0fd453fb04eaa19ceca18dce91615be1928ed9471225ed6dbc622459		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF43E 5304 bytes
font_01_sfnt_off0001065b.bin
b4deb0bc0bc95d4634dd207e22c78da38868377d09393e1a981a37ad2d19e3d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1065B 11012 bytes
font_02_sfnt_off00012bbe.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12BBE 4324 bytes

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