Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2a046d753db1ceb…

MALICIOUS

PDF

79.8 KB Created: 2021-03-14 02:37:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: aad5062941edb1f3469dc942a6b7ebdd SHA-1: 5e0cc3f55cfdba55679f19c27f68d6b2d265a28c SHA-256: a2a046d753db1ceb198987936740c5d7418c7dcb62b0046ecca0277c3d9b7293
104 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating the presence of an external URI. The embedded URL, https://seumenha.ru/wix?keyword=phet+tutorial+energy+skate+park+mastering+physics+answers, is the primary indicator of a potential phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and the presence of a URI suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=phet+tutorial+energy+skate+park+mastering+physics+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4414679/normal_601afd9896cad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383460/normal_5fe18111de9aa.pdfIn PDF document text
    • http://jawigonoputumun.iblogger.org/rofisavidiwisunagofis.pdfIn PDF document text
    • http://sunuzajiwexo.22web.org/19424693675.pdfIn PDF document text
    • http://felaxelibapef.iblogger.org/uk_postal_address_format_international.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496853/normal_6023f7a20c2b5.pdfIn PDF document text
    • http://demasaxilasego.iblogger.org/pukiwigefif.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500911/normal_60093fadbc324.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://26c1613e-5d28-4fa3-89cb-3d2c9ab59faf.filesusr.com/ugd/fe83c3_fbe27e6258f847d68182471b8feddb09.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fedure/3dtuning_unlocked_apk.pdfIn PDF document text
    • http://febuner.epizy.com/joximigajatapexunu.pdfIn PDF document text
    • https://s3.amazonaws.com/zetituri/what_happens_when_you_redeem_chick_fil_a_points.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/grooms_sheet_cake_ideas.pdfIn PDF document text
    • http://wewuwoxije.epizy.com/40364829177.pdfIn PDF document text
    • https://276658a2-c6b1-4a23-bc3b-56c82bce4278.filesusr.com/ugd/f9448a_4d32fa1581b741e8accc97ca06c725e6.pdf?index=trueIn PDF document text
    • https://8ac5c8e1-9174-427d-95c2-90bebb9f105a.filesusr.com/ugd/44b221_5c586b2e3c9b4a8496de5180e8cd0694.pdf?index=trueIn PDF document text
    • http://zugotival.epizy.com/altimeter_group_digital_transformation_survey_2018.pdfIn PDF document text
    • http://lavavil.rf.gd/52485953529.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/xifuduzevenepelefuk.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_off0000f96e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF96E 5608 bytes
SHA-256: 9893c25771e936819a54e2396e946ab523d7f5a375106c70969bfd814ea3a300
font_01_sfnt_off00010c71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C71 10928 bytes
SHA-256: ed71db0525bb7a7451dacfd5c1d34d7fd3690b33db3d5f05facfa32b7d1a8ff1

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