Malicious PDF — malware analysis report

Static analysis result for SHA-256 bda794cc94e3a2c1…

MALICIOUS

PDF

70.5 KB Created: 2021-03-13 18:27:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ada87a6af50a034f44e3d40e6ebf6c65 SHA-1: 91eb698852e00b2153097b8d58ae96a4c0843c06 SHA-256: bda794cc94e3a2c15ca9ee8201471984ae6bc3f64ab26ccd1db47dca7f69d9d3
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 suspicious domain, likely for phishing purposes. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to exploit users by presenting a lure, likely leading to further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://resalured.ru/strik?utm_term=rival+electric+food+slicer+1030%252F7+manual
    • http://ig-copyrightviolation.com/849804940481e1a.pdf
    • http://worldworkbook.com/26125403380d4x32.pdf
    • https://cdn-cms.f-static.net/uploads/4379362/normal_6012878fc66f8.pdf
    • https://static.s123-cdn-static.com/uploads/4414689/normal_5fc9d7906191b.pdf
    • http://sukuwodexi.scienceontheweb.net/rademacher_topics_in_analytic_number_theory.pdf
    • https://static.s123-cdn-static.com/uploads/4500444/normal_5fed0841c3c73.pdf
    • https://vuxilimibipemop.weebly.com/uploads/1/3/1/4/131453056/doxanopigatufigerowi.pdf
    • http://eyebrowthreadingdallastx.com/constructing_congruent_segments_and_angles_gizmo_answersz4ipp.pdf
    • http://gejokakop.mygamesonline.org/43225922148.pdf
    • http://tezibif.mygamesonline.org/fd130_duo_quick_reference_guide.pdf
    • http://beremoter.online/xusokiseorvw3.pdf
    • https://juputifewusa.weebly.com/uploads/1/3/4/4/134435955/bepim_fumanolanog_mesarovikel_wisex.pdf
    • https://cdn.sqhk.co/koxopumo/fahcpgd/spelling_practice_ideas_for_second_grade.pdf
    • http://grantmedica.ru/different_types_of_communication_channelsi2elk.pdf
    • https://cdn.sqhk.co/jomububorava/agigiC6/vua_bong_da_2020_mod_money.pdf
    • https://cdn.sqhk.co/nefakovuwot/iaIghWV/sipis.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zudupaxub.myartsonline.com/5601301474.pdf
    • http://kubowulurarekij.myartsonline.com/nalunuvoxetisaw.pdf
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d394.bin
183e8dd1d50a6341e9eb4bb8ebec2fad63117b736ed7290782aabb1138bfc6d2
pdf-font-stream PDF embedded font (sfnt) at offset 0xD394 5708 bytes
font_01_sfnt_off0000e70b.bin
52e1f231a91ebb3900b2b46b1e423f482dc97225f0d82e4d8331a6aca2b2ed1d
pdf-font-stream PDF embedded font (sfnt) at offset 0xE70B 11024 bytes