Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e2d9f868c962f58…

MALICIOUS

PDF

132.3 KB Created: 2021-03-14 22:49:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 7a6ee622be4ff617f8641482db791583 SHA-1: a762ee6463792da91df29c82025601a28ccaf5a1 SHA-256: 3e2d9f868c962f58dcf16bbbb3a9b4655834929729ce96f892b2abdaf5d265bd
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, identified by the PDF_SEO_LINK_FARM heuristic, directing users to various domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or SEO spam campaigns. While no scripts were explicitly extracted, the PDF structure and extensive link farm suggest an attempt to drive traffic to malicious or deceptive websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://botokaw.ru/award?keyword=derrida+differance+pdf PDF link annotation
    • http://vazawujuzu.sportsontheweb.net/zuzemor.pdfIn PDF document text
    • http://mokaxizekebade.scienceontheweb.net/schlage_keyless_entry_battery.pdfIn PDF document text
    • https://wotigutaz.weebly.com/uploads/1/3/4/3/134361511/951483.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403951/normal_5fd7d1800eb9a.pdfIn PDF document text
    • https://dazenesulamese.weebly.com/uploads/1/3/1/1/131164173/konowowijifis.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487194/normal_5ff0438581ee0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495975/normal_5fd0dee578ca7.pdfIn PDF document text
    • https://figusemaf.weebly.com/uploads/1/3/2/6/132682639/697842c2b1.pdfIn PDF document text
    • https://gigijegijozi.weebly.com/uploads/1/3/4/4/134400985/465c1ee634.pdfIn PDF document text
    • https://kaxojolomo.weebly.com/uploads/1/3/4/8/134885197/jamamifenusilixok.pdfIn PDF document text
    • http://jekefidaz.mygamesonline.org/estilos_de_liderana_autocrtica_democrtica_e_liberal.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/jiwisi/fakunevogiti.pdfIn PDF document text
    • http://sajulugebimisu.myartsonline.com/laguje.pdfIn PDF document text
    • https://711a90e7-97f2-4eab-8690-3003ec1e9b64.filesusr.com/ugd/a0905b_e81068008b0b42da96af0ef425d1a724.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/luxelula/list_of_si_units_in_physics.pdfIn PDF document text
    • https://f6180879-d31b-499c-8e42-fead7842c491.filesusr.com/ugd/007227_4235ba7617b74882a7549cf876829e7a.pdf?index=trueIn PDF document text
    • https://40c507a3-37b7-491f-afd3-f28ba3af1fb2.filesusr.com/ugd/7f5264_facf9f8f4ac047888b5ff9309fcd3b92.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/benubapopikaj/chinta_ta_chita_chita_video_gana.pdfIn PDF document text
    • https://s3.amazonaws.com/gedexim/yardi_revenue_report.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/egyptian_cotton_sheets_walmart.pdfIn PDF document text
    • https://s3.amazonaws.com/kotenu/ezra_pound_canto_14.pdfIn PDF document text
    • https://b3d988c2-7a7d-4c3c-9141-221b6550481e.filesusr.com/ugd/9dda13_1e8aa5808b6d4754a42b41b6606e99f0.pdf?index=trueIn PDF document text
    • http://natukifuza.atwebpages.com/pekaliwawowoxapoxu.pdfIn PDF document text
    • https://s3.amazonaws.com/xeropizuwe/76419639089.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001c899.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C899 4940 bytes
SHA-256: ac1b166591375f7f38cee5b69a6e4239356c198d26db0cb5351e03ab65357167
font_01_sfnt_off0001d981.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D981 13056 bytes
SHA-256: 2ec728035432009377bfcf474fc0a632a85f13d4a063cb9a5bfbbb45aa624ec7

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